Full Stack Engineer

Senior Full Stack Engineer

AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards. If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you!

We are looking for a Senior Full Stack Engineer to build and maintain features across React microfrontends, TypeScript serverless Lambda functions, and Fastify services for a corporate tax provision platform. You will develop AWS infrastructure with Terraform, maintain GitLab CI/CD pipelines, write tests using Jest and Playwright, and leverage AI coding tools as a core part of daily development within a large multi-repo codebase. The role spans modern TypeScript and a legacy ASP.NET codebase and runs as a contract engagement through end of 2026.

What You Will Do:

• Build and maintain features across React microfrontends, TypeScript/Node.js serverless applications, and Fastify services.
• Contribute to shared business logic across frontend and backend applications.
• Develop and maintain unit, integration, and E2E tests.
• Develop and deploy AWS infrastructure using Terraform.
• Participate in GitLab CI/CD pipeline development and maintenance.
• Collaborate with architects and product teams on APIs, async job patterns, and data layer abstractions.
• Leverage AI coding assistants effectively within a large, multi-repo codebase.
• Maintain the legacy ASP.NET Framework 4.7.2 application as needed during migration.

Must Haves:

• 3+ years of strong TypeScript/JavaScript with Node 18+.
• Proficiency with React 18 and modern React patterns.
• Experience with React microfrontend architecture.
• Experience with backend APIs and serverless applications using Fastify, NestJS, AWS Lambda, and API Gateway.
• Experience with PostgreSQL.
• Experience with AWS and Terraform.
• Experience with Docker and GitLab CI/CD.
• Experience with Jest, Playwright, and/or K6.
• Hands-on experience with AI coding tools such as Cursor, GitHub Copilot, Claude Code, or equivalent.
• Upper-Intermediate English level.

Nice To Haves:

• Working knowledge of C# / .NET.
• AG Grid and/or SpreadJS.
• Stryker mutation testing.
• OpenTelemetry / Grafana Faro.
• Amplitude.
• ASC 740 tax provision concepts or corporate tax software.
• pa11y / accessibility testing.
• GitGuardian, Veracode, or Sonatype.
• AI-powered testing or development agents.

Perks And Benefits:

• Growth without limits: build your skills through mentorship, internal TechTalks, challenging projects, and a dedicated annual learning budget.
• Competitive compensation: get recognition that reflects your skills and impact, with regular performance and compensation reviews.
• Flexibility: work 100% remotely with flexible hours that support focus, autonomy, and a healthy work rhythm.
• Meaningful, modern projects: build impactful products using modern technologies alongside global teams and leading brands.
• Collaborative culture: join a supportive environment with zero micromanagement where ideas are welcomed and contributions are recognized.
• Well-being & support: access local well-being programs and people-focused support tailored to your location.