Source Job

US

  • Design and develop secure AI evaluation environments using modern full-stack development practices.
  • Analyze real-world web application clones to identify bugs and workflow issues for improving evaluation quality.
  • Build automated testing frameworks to accurately assess AI-generated code submissions.

React Full-Stack Development Automated Testing Web Security QA Automation

20 jobs similar to Senior Full-Stack Engineers (React): AI Evaluation Environments

Jobs ranked by similarity.

US

  • Design, develop, and deploy enterprise AI-powered applications using React, Next.js, and TypeScript.
  • Build reusable UI components, integrate REST APIs and AI/LLM capabilities, and ensure secure, responsive experiences.
  • Optimize performance, troubleshoot complex issues, and mentor developers in best practices.

Del Oro Consulting is a technology consulting firm that provides contract staffing and solutions for enterprise applications. They are a small to mid-sized company focused on engineering excellence and collaboration.

Global

  • Evaluate AI-generated JavaScript and TypeScript code for correctness and best practices.
  • Audit step-by-step explanations provided by AI for complex algorithmic solutions.
  • Execute model-generated scripts to verify performance and identify inefficiencies.

Prolific builds the largest pool of quality human data for AI development. Over 35,000 AI developers and researchers use the platform to gather data from paid participants with diverse experiences.

South Africa

  • Evaluate and improve AI model performance on complex infrastructure and platform engineering challenges.
  • Analyze system designs, assess code quality, and provide detailed feedback on architectural soundness and technical accuracy.
  • Create reproducible failure cases and communicate complex technical concepts to enhance AI reasoning capabilities.

Jobgether uses an AI-powered matching process to connect candidates with hiring companies quickly and fairly. As a platform, it facilitates remote freelance opportunities for technical professionals.

$60–$80/hr

  • Build and maintain full-stack web and mobile-friendly applications, including React-based front ends and supporting data layers.
  • Integrate third-party and AI services (e.g., LLM APIs such as Anthropic's Claude) into applications and workflows.
  • Collaborate with leadership and the Tech Project Manager to scope work and ship in disciplined cycles, while documenting systems to reduce single-owner risk.

We are a talent solutions firm purpose-built for the alternative investment industry, covering the full talent spectrum from entry to exit. Our team has run alternative investment firms at the highest levels as COOs, CFOs, and CCOs, and we draw on a network of 700+ vetted advisors across 18 functional disciplines.

US

  • Design and develop end-to-end web applications using React and Python, integrating AI-powered capabilities for document management.
  • Build scalable backend services and APIs, and connect with search platforms and data pipelines.
  • Collaborate with experts to optimize performance, write maintainable code, and contribute to continuous improvement.

Our partner builds modern AI-powered applications that transform how enterprises manage and interact with complex information. They offer a collaborative, remote environment focused on innovation and professional growth.

US

  • Develop and maintain full-stack application features across React frontends, Node.js services, databases, and cloud infrastructure.
  • Design intuitive, accessible user interfaces for complex workflows and data-rich applications while using AI-assisted tools.
  • Apply modern engineering practices including TDD, automated testing, CI/CD, and deliver frequent, incremental releases.

Jobgether is an AI-powered job matching platform that connects candidates with hiring companies. The company values efficiency, objectivity, and data privacy, operating in a fully remote environment with a focus on diversity and equal opportunity.

$130,000–$170,000/yr
US Unlimited PTO

  • Design, build, and maintain full-stack applications using React and Python with PostgreSQL.
  • Build and deploy scalable cloud infrastructure on AWS using Terraform and CI/CD pipelines.
  • Practice Test-Driven Development and apply Spec-Driven AI Development to accelerate delivery.

Incisive is building a better model for restorative dentistry by partnering with independent dental practices. They have over 600 doctors nationwide, retain over 95% year over year, and are growing fast.

$160,000–$200,000/yr
US Unlimited PTO

  • Design, build, and maintain full-stack applications using React, Python, and PostgreSQL.
  • Architect and deploy scalable cloud infrastructure on AWS with Terraform and CI/CD pipelines.
  • Implement HIPAA-compliant systems handling PHI and PII with encryption and access controls.

Incisive operates a dental lab network providing restorative and surgical practices with access to nine specialty labs, digital scanning equipment, and a single software platform. Backed by Lock 8 Partners and trusted by over 600 doctors nationwide, it boasts a 95%+ annual retention rate and a fast-growing culture.

$130,000–$150,000/yr
US Unlimited PTO

  • Understand customer needs and engineer elegant, practical solutions that meet Buildout Quality standards.
  • Work within a milestone-based feature framework to break large projects into estimable components for parallel development.
  • Perform thorough code reviews, pair on difficult issues, and deliver excellent software on a timely basis.

Buildout is the AI deal engine for CRE brokerages, automating every step from first contact to commission. Trusted by over 50,000 brokers, Buildout powers more profitable deals from lead to close with a supportive, fully remote team.

Global

  • Design self-contained software-engineering problems for AI agents to solve.
  • Build and configure development environments using Docker, and write automated tests.
  • Create accurate reference solutions for complex coding challenges.

Terac is building the world's largest pool of vetted human experts for AI. It is a growing platform that connects AI researchers and labs with skilled professionals across industries.

LATAM

  • Build and ship MVPs fast, working hands-on with LLMs, APIs, and AI-assisted workflows.
  • Use tools like Copilot, Cursor, GPT, and Claude daily to ship AI-powered product inside high-growth startups.
  • Work fully remote with flexible schedules, part-time or side gig, with some US time overlap.

Futureproofing is a talent platform focused on embedding high-caliber engineers into startups building AI-driven products. They match intentionally, not through keyword filtering, and focus on output, ownership, and shipping speed in a developer-first model.

Global

  • Lead the design and delivery of complex, cross-cutting features spanning APIs, data models, and UI while mentoring mid-level engineers to raise the overall engineering bar.
  • Drive technical direction for new payments capabilities, including architecture trade-offs, operational feasibility, and risk assessment across a cloud-native orchestration platform.
  • Use AI-assisted development tools effectively and contribute to incident response, root-cause analysis, and platform reliability in a 100% remote team.

Xplor Technologies provides modern vertical software, embedded payments, and AI-powered capabilities for membership-based and service-based industries. With over 130,000 businesses in 72+ countries and $47 billion in annual payment volume, the company fosters a values-driven, inclusive culture focused on innovation and collaboration.

India

  • Translate ambiguous stakeholder requirements into structured solutions, user flows, and deliverables.
  • Build and ship end-to-end features across backend and frontend with full ownership and rapid prototyping.
  • Collaborate autonomously in a low-process environment, balancing speed with long-term quality.

Smart Working connects skilled professionals with global teams for full-time, long-term remote roles. They are a remote-first company with a community-driven culture, rated highly on Glassdoor.

Global

  • Design and develop software engineering challenges and reference solutions for AI training.
  • Apply strong programming skills across languages including Python, Java, Rust, Go, C++, and TypeScript.
  • Collaborate in a fully remote environment to improve AI reasoning and coding capabilities.

This organization focuses on advancing AI technologies by training next-generation AI systems through expert software engineering contributions. It operates as a remote-first team dedicated to improving AI reasoning and coding capabilities in a flexible, collaborative environment.

Europe

  • Design, develop, test, and deploy scalable full-stack applications using Python, React, and TypeScript.
  • Leverage AI-assisted coding tools to improve productivity and maintain code quality.
  • Collaborate with cross-functional teams in an Agile remote environment to deliver reliable digital solutions.

The company builds modern software solutions while leveraging AI-assisted development tools to accelerate engineering workflows. They offer a remote-first, flexible working environment with a focus on innovation and continuous learning.

India

  • Design, develop, and maintain scalable full-stack applications using Node.js and React.js.
  • Build and integrate REST APIs and cloud-based solutions with AWS services, including AWS Bedrock.
  • Integrate Generative AI capabilities into applications and collaborate with cross-functional teams to deliver software solutions.

Tech Holding is a full-service consulting firm delivering predictable outcomes and high-quality solutions to clients. It was founded by experienced industry professionals with senior positions in startups to Fortune 50 firms, fostering a diverse and inclusive workplace.

US Canada

  • Design and implement full-stack applications, AI agents, and platform components for rapid GenAI agent development, validation, and deployment.
  • Build developer tooling, CI/CD, and observability for safe, fast iteration with evals, canaries, and rollout/rollback systems.
  • Apply current LLM patterns like RAG, retrieval, routing, and tool-use to deliver measurable customer value and improved trust/safety metrics.

Wolters Kluwer provides expert software and information solutions that professionals in healthcare, legal, tax, and compliance industries rely on for critical decisions. With over 21,000 employees worldwide and 2025 annual revenues of €6.1 billion, they operate in over 40 countries with a culture valuing diversity and inclusion.

US

  • Build and maintain vertical slices of business capability including React frontends, Node services, Prisma schemas, and AWS infrastructure.
  • Own the user experience for complex, policy-laden workflows, ensuring multi-step wizards and data-dense interfaces are simple and intuitive.
  • Operate in an always-green main branch environment, shipping small, reviewable changes to stakeholders constantly.

Redhorse Corporation is a solution-driven company delivering data insights and technology solutions to customers with missions critical to U.S. national interests. They are a team of thoughtful, skilled professionals who thrive as trusted partners building technology-agnostic solutions for difficult and important mission sets.

$10,000–$15,000/mo
UK

  • Take full technical ownership of the mobile and web platform, backend services, and cloud infrastructure.
  • Design and implement an AI-first engineering approach with AI-assisted development and quality controls.
  • Establish engineering standards, governance, and collaborate with founders and external partners.

The company is a profitable, fast-growing SaaS company that develops a B2C product. It operates at significant scale with a lean, execution-focused culture and minimal bureaucracy.

Brazil

  • Design, develop, test, and maintain high-quality software solutions across frontend and backend.
  • Build scalable backend services and APIs using Node.js, and responsive frontend applications with React.js.
  • Collaborate with cross-functional teams, participate in code reviews, and mentor developers to grow toward technical leadership.

Our partner is a technology company that builds impactful digital solutions. They have a remote-first culture with a global team.