Design, build, and ship production software inside client engagements, from core operational systems to new products and services.
Own complex or ambiguous areas of a product or system, from shaping the problem through to release.
Mentor peers and raise the quality of your team's decisions through code review.
Substantial builds the software companies run on, and the products and services they offer. They work in small teams within an established company, focusing on leading-edge technology and direct client collaboration.
Own complex backend projects from planning to deployment, focused on scalability, performance, and reliability.
Collaborate directly with product and customer teams to align engineering with business needs.
Balance hands-on coding with guiding the team’s technical direction through code reviews and architectural feedback.
We build software for wholesale distributors, helping them operate more efficiently through automation and AI. We're a profitable, rapidly growing company of roughly 140 people distributed across North and South America, invested in great products and exceptional talent.
Lead two specialized engineering teams building developer tools for smart contracts.
Shape technical roadmap and architecture while managing project delivery and quality.
Foster a high-performing remote culture and develop engineering talent.
Builds open-source developer infrastructure for the Ethereum ecosystem, including the Hardhat toolset. Remote-first culture with lean engineering practices and a focus on technical excellence.
Build new protocol features in Solana smart contracts and maintain existing on-chain programs.
Review code with focus on correctness, maintainability, and security, and implement audit fixes.
Integrate smart contract changes with off-chain services, SDKs, clients, and developer tooling.
Kamino is building the credit and liquidity engine for tokenized assets, making high-value assets useful onchain. It is the largest credit protocol on Solana and for real-world assets, with $650B+ volume, now expanding to institutions.
Evaluate AI-generated code for correctness, efficiency, maintainability, and overall software quality.
Develop challenging programming problems, reference solutions, and comprehensive test cases.
Provide clear, detailed written technical feedback to support continuous AI model improvement.
Our client is a leading organization in the artificial intelligence industry, collaborating with top technology companies and AI research teams to advance next-generation AI systems. The company offers a remote, contract-based culture focused on evaluating AI-generated code and improving AI model performance alongside highly skilled technical professionals.
Own the architecture and technical strategy of client projects, ensuring scalable, maintainable solutions that meet business goals.
Communicate directly with stakeholders to translate complex business needs into technical solutions and requirements.
Mentor engineers, lead code reviews, and drive technical excellence across the team.
Cabin is a boutique digital innovation consultancy specializing in product discovery, design, and delivery. Its culture emphasizes deep focus, high-impact problem-solving, and long-term partnerships, fostering collaboration and innovation.
Break down larger projects into individual tasks and deliver them in phases.
Collaborate with product, design, and analytics to make risk-aware decisions.
Support operations by creating metrics and participating in on-call efforts.
Affirm exists to provide clear, predictable pay-over-time solutions with no hidden fees, connecting consumers with merchant partners through a personalized shopping experience. As a remote-first company, Affirm values transparency, flexibility, and inclusion, offering comprehensive benefits and opportunities for growth.
Break down larger projects and deliver in phases with team support.
Collaborate with product management, design, and analytics throughout the product lifecycle.
Support operations by monitoring metrics and participating in on-call efforts.
Affirm is a financial technology company that provides transparent, flexible payment solutions over time, aiming to simplify the shopping and payment experience. The company is remote-first and offers its employees comprehensive benefits including full medical coverage, stipends, and equity opportunities.
Own product features end-to-end, from problem statement to production.
Write specs with AI agents and critically review their code in complex systems.
Deliver reliable features handling financial transactions and evolve AI-first development.
Social Discovery Group creates social entertainment platforms that connect people online across cultures, addressing loneliness and disconnection. The company's international remote team works from everywhere, and it earned 'Great Place to Work' recognition in 2024-2025.
Develop and maintain software supporting DoD waiver submission, review, routing, and disposition.
Translate user and mission requirements into software designs, implementing workflow logic, validation rules, interfaces, and data handling.
Conduct code reviews, testing, defect resolution, and coordinate with engineers, database personnel, administrators, and Government stakeholders on integration and deployment.
MicroTech is an award-winning Service-Disabled Veteran-Owned Small Business (SDVOSB) providing information technology and communications services. It prides itself on a strong company culture focused on people development, offering cutting-edge solutions with customers at the forefront.