Senior Full Stack Developer

Senior Full Stack Developer

Location: Indianapolis, IN Duration: 12 Month Contract

We are looking for a technically strong Senior Full Stack Developer with 6+ years of hands-on experience building scalable, production-grade web applications. The ideal candidate is equally comfortable designing UI mockups in Figma, building responsive React/Next.js frontends, architecting RESTful APIs in Python or Node.js, and owning the CI/CD pipelines that ship it all. You will work across the full delivery lifecycle — from blank canvas to production.

Key Responsibilities:

• UI/UX Design & Frontend Development
• Design and prototype application screens, wireframes, and interaction flows in Figma
• Translate Figma designs into pixel-perfect, responsive React and Next.js components
• Implement robust state management using Redux, Zustand, React Query, or Context API
• Consume and integrate REST APIs, handling loading, error, and edge-case states in the UI
• Ensure cross-browser compatibility, accessibility (WCAG), and mobile responsiveness
• Maintain component libraries and enforce design-system consistency across products
• Backend Development
• Design and build RESTful APIs using Python (FastAPI / Flask / Django) and Node.js (Express / NestJS)
• Model and manage relational and non-relational databases; write optimised queries and migrations
• Implement authentication, authorisation, and security best practices (OAuth 2.0, JWT, RBAC)
• Build reusable services, middleware, and shared libraries consumed across applications
• Perform code reviews and enforce backend coding standards, error handling, and logging
• Greenfield Application Development
• Bootstrap new projects from scratch: repository structure, tooling, linting, testing scaffolds
• Define and document architecture decisions (ADRs) for new applications
• Evaluate and select appropriate frameworks, libraries, and cloud services for each use case
• CI/CD & DevOps
• Set up and maintain CI/CD pipelines (GitHub Actions, Azure DevOps, Jenkins, or equivalent)
• Containerise applications with Docker; manage multi-service environments with Docker Compose
• Deploy and configure cloud infrastructure on AWS, Azure, or GCP (compute, storage, networking)
• Automate UI and API deployment workflows including build, test, lint, security scan, and release gates
• Monitor application health, set up alerting, and respond to production incidents

Required Technical Skills:

• Frontend: React.js (Hooks, functional components, performance patterns), Next.js (SSR, SSG, ISR, App Router, API routes), State management — Redux / Redux Toolkit, Zustand, or React Query, TypeScript — strong typing across components, hooks, and API contracts, HTML5, CSS3, Tailwind CSS or CSS Modules; responsive and accessible design, Figma — design, prototyping, component library creation, and design handoff
• Backend: Python — FastAPI, Flask, or Django REST Framework; async patterns, Node.js — Express or NestJS; REST API design and middleware patterns, RESTful API design principles; OpenAPI / Swagger documentation, SQL (PostgreSQL / MySQL) and NoSQL (MongoDB / Redis), Authentication & authorisation: OAuth 2.0, JWT, session management
• DevOps & Tooling: Git (branching strategies: GitFlow, trunk-based); PR workflows and code review, Docker and Docker Compose; basic Kubernetes familiarity is a plus, CI/CD tooling: GitHub Actions, Azure DevOps, Jenkins, or CircleCI, Cloud platforms: AWS (EC2, S3, Lambda, RDS) or Azure or GCP, Testing: Jest, Vitest, React Testing Library (frontend); Pytest, Supertest (backend), Package management via JFrog Artifactory (organisation standard — npm and PyPI are not permitted)

Nice To Have:

• Experience with GraphQL or gRPC alongside REST APIs
• Familiarity with micro-frontend or monorepo architectures (Nx, Turborepo)
• Infrastructure-as-code experience (Terraform, Pulumi, or AWS CDK)
• Exposure to observability tooling (Datadog, Grafana, OpenTelemetry)
• Contributions to open-source projects or published npm / PyPI packages

Qualifications:

• 6+ years of professional full stack development experience
• Bachelor's degree in computer science, Software Engineering, or equivalent practical experience
• Demonstrable portfolio or codebase showing end-to-end ownership (design → deploy)
• Strong written and verbal communication skills; ability to work across cross-functional teams

Diverse Lynx LLC is an Equal Employment Opportunity employer. All qualified applicants will receive due consideration for employment without any discrimination. All applicants will be evaluated solely on the basis of their ability, competence and their proven capability to perform the functions outlined in the corresponding role. We promote and support a diverse workforce across all levels in the company.