Build and ship customer-facing products across web, desktop, and mobile.
Design, develop, and maintain backend services, APIs, and cloud infrastructure.
Take ownership of high-leverage problems and collaborate across a small engineering team.
This company operates an ambitious AI research and product environment spanning web, desktop, mobile, backend, and AI systems. It is a small, collaborative engineering team that values autonomy, technical excellence, and low-ego collaboration.
Design and build AI-assisted tools for developers' terminal workflows using TypeScript across frontend and backend.
Provide technical leadership, breaking down complex problems and maintaining high code quality and reliability.
Collaborate with Product, Design, and engineering teams to align technical decisions with GitLab's broader strategy.
GitLab is an intelligent orchestration platform for DevSecOps, enabling organizations to increase developer productivity and accelerate digital transformation. Trusted by over 50 million users and more than 50% of the Fortune 100, GitLab fosters a high-performance culture driven by values and continuous knowledge exchange.
Build and mature the Stratusphere platform using agent-first development practices, including web interfaces, backend services, and agent tooling.
Scrutinize AI-generated plans and code to ensure scalability, maintainability, and rigorous testing standards.
Collaborate cross-functionally with engineering, product, and customer teams to design and evolve autonomous systems for cloud optimization.
StratusGrid builds Stratusphere, a multi-agent platform that turns cloud complexity into measurable outcomes by coordinating specialized infrastructure agents. We are a team of builders and operators focused on trustworthy automation and real business impact, working at the intersection of cloud engineering, product, and customer outcomes.
Assess software engineering tasks for technical accuracy, realism, and reproducibility.
Provide actionable feedback on codebase integration issues and logic errors.
Ensure AI training workflows are rigorous and practically applicable.
Project World Wide sources experienced technical specialists for AI training task auditing. This freelance contract opportunity focuses on ensuring technical rigor and accuracy in AI workflows.
Own product features end to end from ambiguous requirements through deployment and monitoring.
Collaborate with product owners and domain experts to build reliable, maintainable full-stack solutions.
Leverage AI-assisted coding, code review, and QA tools to increase development velocity and quality.
The company builds production-grade web software for regulated domains such as fintech. It operates with small, collaborative engineering pods that emphasize ownership, autonomy, and AI-assisted development.
Architect production backend services and data models for financial workflows.
Build full-stack features and AI agent-powered credit risk operations.
Use modern AI-assisted development tools and contribute to engineering standards.
Gynger provides embedded financing and cash flow management for B2B tech vendors, using AI agents for credit risk. Founded in 2021 and based in NYC, the Series A startup has raised $20M and is a Built In Best Place to Work.
Evaluate AI-generated coding interactions end to end for usefulness, accuracy, and consistency with strong engineering practices.
Assess whether coding agents demonstrate sound technical reasoning and practical engineering judgment rather than just producing working-looking code.
Provide actionable feedback, distinguishing between adequate and exceptional AI response quality to shape evaluation standards.
Jobgether uses an AI-powered matching process to ensure your application is reviewed quickly and fairly against the role's core requirements. They are a third-party recruitment platform that partners with companies to fill positions, with a streamlined selection process.
Develop and evaluate AI training data for LLM and AI agent platforms.
Create coding tasks and write reference-quality solutions for evaluation.
Critically assess AI-generated code for correctness, security, and maintainability.
Toloka is a leading expert human data platform for AI agents and LLMs, providing high-quality training data. The company focuses on improving AI models through human feedback and structured evaluation.
Design and implement framing and structural analysis algorithms from prototype to MVP.
Use AI-assisted workflows to ship high-quality software while owning correctness and maintainability.
Partner with product and customer success teams and mentor engineers on a new, fast-moving team.
Higharc is a VC-backed startup transforming how new homes are designed and built, with over $175M raised. It is a remote-first company where a small founding team works flexibly to ship products for homebuilders.
Work directly with client teams to understand complex workflows and identify opportunities for AI automation.
Build, deploy, and maintain production solutions integrating with TMS, WMS, and ERP platforms.
Tune AI agents and automated workflows using production data to continuously improve performance.
The company specializes in AI-driven automation and enterprise integrations for logistics and supply chain operations. It is a growth-stage, fast-moving environment that values speed, pragmatism, and ownership.
Develop secure, well-tested TypeScript features for the Duo Client SDK, solving technical problems of moderate scope.
Ship improvements with minimal guidance, write tests, and contribute to code reviews and design discussions.
Design durable public APIs with clear interfaces, versioning, and backward compatibility for external consumers.
GitLab provides an intelligent DevSecOps platform that helps organizations increase developer productivity and accelerate digital transformation. With over 50 million registered users and trust from more than 50% of the Fortune 100, GitLab fosters a high-performance, values-driven culture where team members embrace AI and collaborate asynchronously in a fully remote environment.
End-to-end ownership across frontend, backend, and infrastructure as the first in-house engineer for an AI-native PSA platform.
Harden, scale, and evolve the existing platform while shipping customer-facing improvements.
Work solo as a senior/staff-level generalist with high ambiguity and close founder collaboration.
Smart Working connects skilled professionals with outstanding global teams for full-time, long-term remote roles. They are a high-rated workplace on Glassdoor with a remote-first culture that values growth and well-being.
Build responsive, accessible interfaces in React / Next.js and TypeScript.
Turn designs into clean, reusable, well-structured components and integrate with backend APIs.
Review code, including AI-generated code, for quality and consistency while keeping performance and accessibility high.
Monks is the global, digital-first, data-driven unitary operating brand of S4 Capital plc, combining marketing and technology services to redefine brand interactions. The company has been named a Contender in The Forrester Wave and ranks among Cannes Lions' Top 10 Creative Companies, fostering an equal-opportunity culture.
Lead and mentor a team of senior software engineers while driving AI-assisted development practices.
Partner with Product, Design, and Operations to translate business requirements into scalable technical solutions.
Design and evolve architectures across frontend, backend, data, cloud, and AI systems.
The company is a technology partner building AI-enabled products and modern software platforms. They foster a remote-first, globally distributed culture with a focus on engineering excellence and innovation.
Architect and ship AI-powered features that change how service businesses operate, creating net-new capabilities.
Build and maintain large-scale systems processing billions in payments and serving 120,000+ businesses with reliability.
Own your work end to end from technical design through production, with full accountability for performance.
Genius AI builds AI-powered products that handle admin work for local businesses, automating booking, marketing, client management, and finances. The company has saved businesses over 106 million admin hours and facilitated more than 624 million client touch points, fostering a culture of ownership and AI-first collaboration.
Own and drive technical strategy across multiple squads, shaping architectural decisions with lasting impact.
Tackle the company's most ambiguous technical challenges, turning loosely defined problems into scalable solutions.
Build shared systems and platform capabilities that enable engineering teams to move faster and deliver more effectively.
Onebrief builds collaboration and AI-powered workflow software for military planning and operational coordination. They are a distributed team of builders from military, operational, and technology backgrounds, backed by leading investors and valued at over $2 billion.
Build and enhance an internal multi-model AI platform with agents, automations, and MCP tool integrations in a senior full-stack role.
Develop production-quality web applications and an internal MCP marketplace for authenticated AI tool access across multiple clients.
Promote AI adoption across engineering through technical guidance, demonstrations, and reusable tools, collaborating with cross-functional stakeholders.
This partner company focuses on building AI-first solutions that improve engineering teams' workflows. They foster a collaborative, remote-first environment with a culture of experimentation, continuous learning, and knowledge sharing.
Be agentic by fostering a culture of proactive problem-solving and initiative-taking.
Build reference codebases for the social sector to learn from and adapt.
Streamline data across different sources to create a single source of truth.
The Agency Fund is a nonprofit innovation lab expanding human agency through technology, AI, and social science. Their small, distributed team values curiosity, autonomy, and collaboration, partnering with 200+ organizations worldwide.
Design and build user-facing systems and integrations for secure, next-gen interfaces.
Own the frontend experience layer, converting complex operator requirements into reliable UIs.
Work hands-on building and operating systems in partnership with product designer and engineering teams.
Ruya AI is a venture-backed defense-tech company building AI-native intelligent software for sovereign institutions. They are headquartered in Massachusetts with offices across the US, Europe, and the Middle East, and are expanding their engineering team with people who demonstrate strong ownership and judgment.
Build product surfaces across web, desktop, and mobile for Hermes Agent and Nous Portal.
Develop backend services and APIs that hold up under real usage.
Maintain the cloud platform and infrastructure behind products and model serving.
Nous Research builds AI infrastructure including Hermes Agent and Nous Portal. The team is small, fast-moving, and values generalist engineers with strong ownership and low ego.