The Role
Develop and maintain features across React microfrontends, TypeScript/Node serverless Lambdas, and Fastify services; build AWS infrastructure with Terraform; maintain GitLab CI/CD; write unit, integration and E2E tests (Jest, Playwright); collaborate on APIs, async jobs and data abstractions; support legacy ASP.NET during migration; use AI coding assistants in a large multi-repo codebase.
Summary Generated by Built In
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.
WHY JOIN US
If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you!
ABOUT THE ROLE
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
Skills Required
- 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
- Working knowledge of C# / .NET and ability to maintain ASP.NET Framework 4.7.2 during migration
- Familiarity with AG Grid, SpreadJS, Stryker, OpenTelemetry, Amplitude, ASC 740, accessibility testing, or security scanning tools
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The Company
What We Do
AgileEngine is a privately held company established in 2010 that builds dedicated teams of designers and developers. We turn good ideas into awesome software that people actually want to use. Some of the biggest names and the hottest startups around the world chose us to build their tech.
