Nexus
Web3 company listing jobs in blockchain/crypto space
Open Positions at Nexus
4 days ago
<p></p><p><strong>About Nexus</strong></p><p>Nexus is the engine for verifiable finance — a blockchain designed to natively embed the world’s financial system into one compounding system. Built to support every major financial market on a single global exchange, Nexus unifies infrastructure that has historically been fragmented across chains and intermediaries.<br></p><p>Headquartered in San Francisco with a growing presence in Buenos Aires, Nexus is proud to be a cross-continental team of engineers, cryptographers, and market builders. We’re investing deeply in the Latin American ecosystem — and always looking for world-class talent to join us.<br></p><p>Nexus is backed by leading investors, including Pantera, Lightspeed, Dragonfly, Faction, Blockchain Builders Fund, Alliance, and SVA, and works with more than 100 partners across the global finance and blockchain stack.</p><p></p><p>Location: Remote (Argentina)<br>Type: Contract<br>Duration: 12 months with potential for extension</p><p><strong>The Role</strong></p><p><br>We’re expanding our engineering team in Latin America to strengthen quality and reliability across Nexus’s Layer 1 and its native DEX. As a Software Development Engineer in Test (SDET), you’ll help build and maintain the automated testing infrastructure that ensures our trading, settlement, and blockchain systems are secure, performant, and production-ready.</p><p>You’ll collaborate with backend, protocol, and frontend engineers in San Francisco while contributing remotely from Argentina, helping ship high-quality financial infrastructure at scale.</p><p><strong>What You’ll Do</strong></p><ul> <li><p>Develop and maintain automated test suites for backend services written in Node.js and Rust</p></li> <li><p>Build integration and end-to-end tests covering trading flows, settlement logic, and on-chain verification</p></li> <li><p>Design test cases for APIs, data pipelines, and distributed system components</p></li> <li><p>Assist in implementing CI/CD pipelines to automate testing and deployment validation</p></li> <li><p>Write performance and regression tests to ensure reliability under high-load conditions</p></li> <li><p>Debug issues across services, reproduce bugs, and collaborate with engineers to resolve them</p></li> <li><p>Contribute to improving test coverage, observability, and quality standards across the codebase.</p></li> </ul><p><strong>What We’re Looking For</strong></p><ul> <li><p>1–2 years of experience in software development or QA automation (internships or academic projects count)</p></li> <li><p>Experience writing automated tests using JavaScript/TypeScript, Rust, or similar languages</p></li> <li><p>Familiarity with testing frameworks (e.g., Jest, Mocha, Playwright, Cypress, or similar)</p></li> <li><p>Basic understanding of APIs, databases, and backend systems</p></li> <li><p>Strong problem-solving skills and attention to detail</p></li> <li><p>Excellent communication skills in Business English (spoken & written)</p></li> <li><p>Eagerness to learn about distributed systems, financial infrastructure, and blockchain technology.</p></li> </ul><p><strong>Bonus Points For</strong></p><ul> <li><p>Experience testing APIs or backend services.</p></li> <li><p>Exposure to CI/CD tools (GitHub Actions, Docker, etc.)</p></li> <li><p>Familiarity with blockchain fundamentals or smart contracts</p></li> <li><p>Understanding of performance testing concepts and tools</p></li> <li><p>Experience working in fast-paced startup environments</p></li> </ul><p><strong>Why Join Us</strong></p><ul> <li><p>Build the backend systems powering the Layer 1 for Verifiable Finance.</p></li> <li><p>Collaborate with experts across blockchain, AI, and financial infrastructure.</p></li> <li><p>Shape the foundation for a verifiable, transparent, global trading system.</p></li> <li><p>Thrive in a fast-moving, high-impact engineering environment.</p></li> </ul> When applying, mention the word CANDYSHOP to show you read the job post completely.
23 days ago
## About Nexus Nexus is the engine for verifiable finance — a blockchain designed to natively embed the world’s financial system into one compounding system. Built to support every major financial market on a single global exchange, Nexus unifies infrastructure that has historically been fragmented across chains and intermediaries. Headquartered in San Francisco with a growing presence in Buenos Aires, Nexus is proud to be a cross-continental team of engineers, cryptographers, and market builders. We’re investing deeply in the Latin American ecosystem — and always looking for world-class talent to join us. Nexus is backed by leading investors, including Pantera, Lightspeed, Dragonfly, Faction, Blockchain Builders Fund, Alliance, and SVA, and works with more than 100 partners across the global finance and blockchain stack. **Location:** Remote **Type:** Contract **Duration:** 12 months with potential for extension ## The Role We’re hiring Systems Engineers in Latin America to work at the core of Nexus’s execution stack — contributing to the runtime behind our Layer 1 protocol and the high-performance engine that powers decentralized trading. This is not a typical backend role. You will work on performance-critical systems where microseconds matter, building execution paths that may evolve into core protocol primitives. Your work will directly shape how orders are processed, state transitions are computed, and performance guarantees are achieved across the network. Whether you're a strong mid-level engineer looking to grow into system ownership, or a senior/principal engineer eager to architect high-throughput distributed systems, this role offers the opportunity to build software that runs at the heart of a global execution layer. You’ll collaborate closely with protocol, cryptography, and product teams in San Francisco while contributing remotely from Argentina. ## What You’ll Do - Design and implement high-performance components in Rust, C++, or Go for Nexus’s DEX engine and protocol runtime. - Build low-latency pipelines for order execution, event propagation, and state updates. - Optimize concurrency, scheduling, memory layout, and I/O paths for determinism and throughput. - Contribute to the evolution of execution abstractions that may be enshrined at the protocol layer. - Work with protocol engineers to ensure safety, composability, and consensus compatibility. - Investigate and resolve performance bottlenecks using profiling, tracing, and benchmarking techniques. - Help define standards for reliability, correctness, and high-assurance distributed execution. - For senior/principal candidates: Drive system design decisions, shape execution architecture, and mentor others in performance engineering. ## What We’re Looking For - Strong experience with Rust, C++, Go, or other systems programming languages. - Understanding of high-performance or distributed systems (e.g., low-latency engines, runtimes, databases, OS-level concurrency). - Ability to think in terms of execution flows, concurrency models, resource lifecycles, and system invariants. - Practical experience profiling CPU, memory, and synchronization overhead. - Comfort working close to runtime constraints where performance, determinism, and resilience are critical. - Excellent communication skills in Business English (spoken and written). ## Bonus Points For - Experience building matching engines, databases, compilers, blockchain runtimes, or HPC systems. - Familiarity with lock-free concurrency, zero-copy data structures, or cache-aware design. - Exposure to protocol engineering, consensus systems, or transaction ordering. - Background in correctness-focused engineering (e.g., formal verification, static analysis). - Open-source contributions to systems-level projects. ## Why Join Us - Build the execution backbone of a Layer 1 blockchain and next-generation DEX engine. - Work on systems where your optimizations translate directly into global performance gains. - Grow from mid-level contributor to system owner — or drive execution architecture as a senior/principal. - Shape primitives designed to last — correct, performant, and potentially enshrined at the protocol level. - Join a high-performance engineering culture where ambition and deep technical work are expected. When applying, mention the word **CANDYSHOP** to show you read the job post completely.
Nexus
25 days ago
## About Nexus Nexus is the engine for verifiable finance — a blockchain designed to natively embed the world’s financial system into one compounding system. Built to support every major financial market on a single global exchange, Nexus unifies infrastructure that has historically been fragmented across chains and intermediaries. Headquartered in San Francisco with a growing presence in Buenos Aires, Nexus is proud to be a cross-continental team of engineers, cryptographers, and market builders. We’re investing deeply in the Latin American ecosystem — and always looking for world-class talent to join us. Nexus is backed by leading investors, including Pantera, Lightspeed, Dragonfly, Faction, Blockchain Builders Fund, Alliance, and SVA, and works with more than 100 partners across the global finance and blockchain stack. **Location:** San Francisco, CA **Type:** Internship (Part-Time) **Duration:** 3 months **Hours:** Up to 16 hours per week ## The Role We’re looking for a motivated, detail-oriented **Legal Intern** to support our team for a 3-month internship. This part-time role is ideal for a current law student or recent graduate who wants hands-on experience across corporate and commercial legal work at a fast-moving company operating in the Web3 space. You’ll work closely with internal stakeholders across the business to support legal research, drafting, and operational execution—helping ensure Nexus can move quickly while staying thoughtful and compliant. ## What You’ll Do - **Legal Research:** Conduct thorough legal research on corporate and commercial topics, including contract law, intellectual property, and regulatory compliance related to blockchain and Web3 technologies. - **Drafting and Writing:** Assist in drafting and reviewing legal documents, including contracts, agreements, and internal policies. Prepare concise, well-organized legal memos and reports. - **Regulatory Compliance:** Support the team in monitoring and analyzing regulatory developments in blockchain and cryptocurrency. - **Corporate Governance:** Assist with the review and organization of corporate governance matters. - **Cross-Functional Collaboration:** Partner with teams across the company (including product, engineering, and business development) to provide legal insights and support. ## What Success Looks Like - Legal research is delivered quickly, clearly, and with strong attention to detail. - Drafts and memos are well-structured, actionable, and easy for stakeholders to use. - The legal team is unblocked on day-to-day contract and compliance workflows. - Internal partners feel supported and can move faster because legal processes are organized and responsive. ## What We’re Looking For ### Must-Have - Currently enrolled in or recently graduated from a JD program at an accredited law school. - Strong legal research and writing skills, with the ability to communicate findings clearly. - Detail-oriented, proactive, and eager to learn in a fast-paced environment. - Ability to work independently and manage multiple tasks with minimal oversight. - Interest in blockchain, crypto, and Web3 concepts (or prior exposure through coursework, internships, or personal learning). ### Bonus Points - Comfort operating in ambiguity and switching between projects quickly. - Strong organizational skills and ability to keep legal workstreams well-tracked. ## Why Join Us - Gain hands-on experience supporting corporate and commercial legal work at a high-growth company. - Work cross-functionally with teams building at the frontier of crypto, AI, and finance. - Learn by doing—own real deliverables that directly support business execution. *When applying, mention the word CANDYSHOP to show you read the job post completely.*
44 days ago
## About Nexus Nexus is building the foundation for verifiable finance, an economic system where every transaction, order, and settlement can be proven on-chain with cryptographic assurance. To do this we’re developing a DEX Layer 1 blockchain purpose-built for the AI economy, powered by idle compute from millions of people around the world, and verified with zero-knowledge proofs. This is finance rebuilt for the future: verifiable, scalable, and open to all. Nexus has raised $25M in Series A funding from Lightspeed, Pantera, Dragonfly, SV Angel, and more. **Location:** Remote (Argentina) **Type:** Contract **Duration:** 12 months with potential for extension ## The Role We’re hiring **Protocol Engineers** in Latin America to work at the core of Nexus’s Layer 1 execution runtime — building and evolving the systems that define how the protocol executes transactions, processes orders, and computes state transitions. This is not a typical backend role. You’ll work on performance-critical protocol execution paths where microseconds matter, designing and implementing systems that may be enshrined directly into the Nexus protocol. Your work will influence the execution model, runtime abstractions, and performance guarantees of a next-generation Layer 1 blockchain and high-throughput DEX engine. Whether you’re a strong mid-level engineer looking to grow into protocol ownership or a senior/principal engineer eager to architect execution-layer systems, this role offers the opportunity to shape how the protocol itself behaves under load. You’ll collaborate closely with protocol, cryptography, and product teams in San Francisco while contributing remotely from Mexico or Argentina. ## What You’ll Do - Design and implement protocol-level execution systems in Rust, C++, or Go. - Build and evolve the runtime responsible for transaction execution, order processing, and state transitions. - Optimize concurrency, scheduling, memory layout, and I/O for deterministic, high-throughput execution. - Define and implement execution abstractions that may be enshrined at the protocol layer. - Work with cryptography and consensus engineers to ensure safety, correctness, and composability. - Diagnose and resolve performance and correctness issues using profiling, tracing, and benchmarking. - Help establish standards for protocol correctness, reliability, and execution guarantees. - For senior/principal engineers: lead execution of architecture decisions and mentor engineers working on protocol systems. ## What We’re Looking For - Strong experience with Rust, C++, Go, or other systems programming languages. - Experience working on protocols, runtimes, execution layers, or consensus-adjacent systems. - Deep understanding of distributed systems, concurrency, and low-latency execution. - Ability to reason about correctness, determinism, and invariants at the protocol level. - Practical experience optimizing performance-critical systems. - Comfort operating in environments where correctness and performance are equally critical. - Excellent communication skills in Business English (spoken and written). ## Bonus Points - Experience with blockchain protocol design, execution engines, or transaction ordering. - Familiarity with lock-free concurrency, cache-aware data structures, or zero-copy designs. - Background in formal methods, static analysis, or correctness-focused engineering. - Contributions to open-source protocol or systems-level projects. ## Why Join Us - Help define the execution semantics of a new Layer 1 blockchain. - Work on protocol systems where your decisions have network-wide impact. - Grow into ownership of protocol-critical execution components. - Shape primitives intended to last — performant, correct, and foundational. - Join a culture that values deep technical rigor and long-term thinking. When applying, mention the word **CANDYSHOP** to show you read the job post completely.
44 days ago
## About Nexus Nexus is building the foundation for verifiable finance, an economic system where every transaction, order, and settlement can be proven on-chain with cryptographic assurance. To do this we’re developing a DEX Layer 1 blockchain purpose-built for the AI economy, powered by idle compute from millions of people around the world, and verified with zero-knowledge proofs. This is finance rebuilt for the future: verifiable, scalable, and open to all. Nexus has raised $25M in Series A funding from Lightspeed, Pantera, Dragonfly, SV Angel, and more. **Location:** Remote (Brazil) **Type:** Contract **Duration:** 12 months with potential for extension ## The Role We’re hiring Protocol Engineers in Latin America to work at the core of Nexus’s Layer 1 execution runtime — building and evolving the systems that define how the protocol executes transactions, processes orders, and computes state transitions. This is not a typical backend role. You’ll work on performance-critical protocol execution paths where microseconds matter, designing and implementing systems that may be enshrined directly into the Nexus protocol. Your work will influence the execution model, runtime abstractions, and performance guarantees of a next-generation Layer 1 blockchain and high-throughput DEX engine. Whether you’re a strong mid-level engineer looking to grow into protocol ownership or a senior/principal engineer eager to architect execution-layer systems, this role offers the opportunity to shape how the protocol itself behaves under load. You’ll collaborate closely with protocol, cryptography, and product teams in San Francisco while contributing remotely from Mexico or Argentina. ## What You’ll Do - Design and implement protocol-level execution systems in Rust, C++, or Go. - Build and evolve the runtime responsible for transaction execution, order processing, and state transitions. - Optimize concurrency, scheduling, memory layout, and I/O for deterministic, high-throughput execution. - Define and implement execution abstractions that may be enshrined at the protocol layer. - Work with cryptography and consensus engineers to ensure safety, correctness, and composability. - Diagnose and resolve performance and correctness issues using profiling, tracing, and benchmarking. - Help establish standards for protocol correctness, reliability, and execution guarantees. - For senior/principal engineers: lead execution of architecture decisions and mentor engineers working on protocol systems. ## What We’re Looking For - Strong experience with Rust, C++, Go, or other systems programming languages. - Experience working on protocols, runtimes, execution layers, or consensus-adjacent systems. - Deep understanding of distributed systems, concurrency, and low-latency execution. - Ability to reason about correctness, determinism, and invariants at the protocol level. - Practical experience optimizing performance-critical systems. - Comfort operating in environments where correctness and performance are equally critical. - Excellent communication skills in Business English (spoken and written). ## Bonus Points - Experience with blockchain protocol design, execution engines, or transaction ordering. - Familiarity with lock-free concurrency, cache-aware data structures, or zero-copy designs. - Background in formal methods, static analysis, or correctness-focused engineering. - Contributions to open-source protocol or systems-level projects. ## Why Join Us - Help define the execution semantics of a new Layer 1 blockchain. - Work on protocol systems where your decisions have network-wide impact. - Grow into ownership of protocol-critical execution components. - Shape primitives intended to last — performant, correct, and foundational. - Join a culture that values deep technical rigor and long-term thinking. When applying, mention the word **CANDYSHOP** to show you read the job post completely.
46 days ago
## About Nexus Nexus is building the foundation for verifiable finance, an economic system where every transaction, order, and settlement can be proven on-chain with cryptographic assurance. To do this we’re developing a DEX Layer 1 blockchain purpose-built for the AI economy, powered by idle compute from millions of people around the world, and verified with zero-knowledge proofs. This is finance rebuilt for the future: verifiable, scalable, and open to all. Nexus has raised $25M in Series A funding from Lightspeed, Pantera, Dragonfly, SV Angel, and more. Design is a core function at Nexus. We believe great products emerge from first-principles thinking, deep user understanding, and close collaboration across design, product, and engineering. ## The Role We’re hiring a **Senior Product Designer** to lead end-to-end design for complex, high-stakes products at the intersection of Web3, financial infrastructure, and user trust. In this role, you’ll independently own large problem spaces — from defining the right problems to shipping high-quality, production-ready solutions. You’ll act as a thought partner to product, engineering, and founders, using design thinking and first-principles reasoning to shape product direction. This role is ideal for someone who wants both hands-on craft and strategic impact in a fast-moving Web3 environment. ## What You’ll Do ### Design Leadership & First-Principles Thinking - Break down ambiguous, complex product challenges into core user needs and system constraints - Challenge assumptions and legacy UX patterns common in financial, exchange, and crypto products - Apply structured design thinking to drive clarity, alignment, and momentum across teams - Set a high bar for quality, usability, and user trust across the product - Mentor and support more junior designers as the team grows ### End-to-End Product Ownership - Lead design for major product areas from discovery through launch and iteration - Navigate multiple product contexts simultaneously, balancing priorities and maintaining design consistency across the Nexus ecosystem - Translate complex Web3 concepts — trading flows, wallets, transactions, permissions, and security — into intuitive, user-centered experiences - Balance user needs, business goals, and technical constraints in decision-making ### UX & Interaction Design - Design scalable interaction patterns and user flows for high-complexity, high-stakes systems - Identify and mitigate usability, trust, and edge-case risks early in the design process - Advocate for clarity, accessibility, and consistency across the product surface ### Visual & UI Craft - Produce polished, production-ready UI with strong attention to detail - Own and evolve key parts of the design system to support scale and development speed - Partner closely with engineers to ensure thoughtful, high-quality execution ### Research & Insight - Lead and conduct user research, from exploratory interviews to usability testing - Synthesize qualitative and quantitative insights into clear design and product recommendations - Use research to inform both tactical decisions and broader product strategy ### Collaboration & Influence - Work as a close partner to product managers, engineers, and founders - Clearly communicate design rationale, tradeoffs, and decisions to diverse stakeholders ## What Success Looks Like - Complex Web3 and exchange workflows that feel intuitive, trustworthy, and accessible - Design systems and interaction patterns that scale with product and engineering velocity - Strong cross-functional alignment driven by clear design thinking and communication - Meaningful improvements in usability, clarity, and user confidence across Nexus products - Design functioning as a key driver of both product strategy and execution ## What We’re Looking For ### Experience & Skills - 6–10+ years of experience in product design, UX design, or related roles - Strong portfolio demonstrating senior-level ownership, first-principles thinking, and end-to-end impact - Proven experience designing complex, systems-driven, or trust-critical products (e.g., fintech, crypto, platforms, exchanges) - High level of proficiency with modern design tools such as Figma ### Mindset - Deeply user-centered, analytical, and curious - Operates as a self-starter, independently identifying, owning, and driving product enhancements end to end - Comfortable operating in ambiguity and driving clarity independently - Able to move fluidly between strategy and detailed execution ### Collaboration - Strong communicator who builds trust across disciplines - Comfortable giving and receiving candid, constructive feedback - Effective working in a remote-first, cross-functional environment ### Bonus Points - Experience designing crypto, DeFi, or financial exchange products - Hands-on experience with Web3 products, wallets, or on-chain UX - Background in fintech, payments, trading, or security-sensitive systems - Early-stage startup experience - Familiarity with front-end development or design engineering ## Why Join Nexus - Be a foundational senior designer with significant influence over product and design direction - Work on high-impact problems at the frontier of decentralized and verifiable finance - Competitive compensation, meaningful equity, and token participation - Opportunity to define design systems, processes, and culture from an early stage When applying, mention the word **CANDYSHOP** to show you read the job post completely.
## About Nexus Nexus is building the foundation for verifiable finance, an economic system where every transaction, order, and settlement can be proven on-chain with cryptographic assurance. To do this we’re developing a DEX Layer 1 blockchain purpose-built for the AI economy, powered by idle compute from millions of people around the world, and verified with zero-knowledge proofs. This is finance rebuilt for the future: verifiable, scalable, and open to all. Nexus has raised $25M in Series A funding from Lightspeed, Pantera, Dragonfly, SV Angel, and more. ## Location: Remote (Buenos Aires, Argentina) ## Type: Contract ## Duration: 12 months with potential for extension ## The Role We’re hiring a **Senior Infrastructure Engineer** in Latin America to design and scale the core infrastructure supporting Nexus’s Layer 1 blockchain and its high-performance DEX, enshrined at the protocol layer. This role is centered on low-latency, high-throughput distributed infrastructure, supporting mission-critical financial workloads that demand determinism, fairness, and resilience. You’ll collaborate closely with product, protocol, and cryptography teams while contributing remotely from Argentina or broader LATAM. This position offers the opportunity to work on infrastructure that sits at the heart of a global execution system — ensuring reliability from public testnet through mainnet and institutional-grade performance. ## What You’ll Do - Architect and implement the distributed infrastructure powering Nexus’s L1 blockchain and high-performance DEX. - Optimize consensus and transaction pipelines for speed, determinism, fairness, and low latency. - Build secure, production-grade systems that meet the performance requirements of modern financial exchanges. - Develop and maintain high-availability, fault-tolerant infrastructure across cloud and distributed environments. - Offer best practices for reliability, observability, performance engineering, and secure operations. ## What Success Looks Like - A stable, enterprise-grade mainnet with high availability and sub-second transaction finality. - A DEX achieving low-latency execution comparable to centralized trading systems while remaining decentralized. - Infrastructure, tooling, and developer workflows enabling less than 10 minutes from onboarding to first transaction. - High-frequency trading benchmarks met or exceeded. - An engineering environment that scales effectively without compromising reliability or code quality. ## What We’re Looking For ### Must-Have - 6–10+ years of software engineering experience, with at least 3+ years in infrastructure or distributed systems roles. - Strong programming experience in Rust (preferred), Go, or another systems language. - Deep expertise in low-latency, high-throughput, or distributed systems (HFT, exchanges, runtimes, consensus systems, etc.). - Hands-on experience with container orchestration systems such as Kubernetes and Docker. - Experience building and maintaining observability systems, including metrics, tracing, and logging frameworks (e.g., Prometheus, Grafana, OpenTelemetry). - Proficiency with Infrastructure-as-Code tools such as Terraform, Pulumi, or CloudFormation. - Deep knowledge of at least one major cloud provider (AWS, GCP, or Azure), including networking, compute, security, and distributed workloads. - Ability to design and operate secure, fault-tolerant, production-grade infrastructure. - Excellent written and spoken Business English. ### Bonus Points: - Experience running distributed blockchain infrastructure, validator networks, or Layer-1 systems. - Knowledge of MEV mitigation, transaction ordering fairness, or decentralized exchange infrastructure. - Experience optimizing consensus or transaction pipelines for determinism and low latency. - Familiarity with zero-knowledge proofs or cryptography. ## Why Join Us - Build the distributed infrastructure behind a next-generation Layer 1 blockchain and global DEX. - Work on systems where infrastructure performance directly shapes the end-to-end trading experience. - Collaborate with top engineers in AI, cryptography, runtime systems, and distributed consensus. - Shape primitives and infrastructure designed for long-term correctness, performance, and global scale. - Join a high-performance engineering culture where deep technical work is valued and expected. When applying, mention the word **CANDYSHOP** to show you read the job post completely.