Sr NR Full Stack Dev ( React NestJS )
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Job Location:
Buenos Aires - Argentina
Monthly Salary:
Not Disclosed
Posted on:
20-09-2025
Vacancies:
1 Vacancy
Job Summary
Senior Full-Stack Developer (TypeScript: React/)
Were looking for a Senior Full-Stack Developer (TypeScript) to join Crunchloops Engineering team. If you love shipping great products mentoring others and owning complex technical challenges end-to-end this ones for you.
About Us
Were a team of talented passionate creative software professionals committed to exceeding our clients goals. With a clear vision we build impactful software solutions in a warm collaborative environment that prizes direct communication professionalism and continuous learning.
Learn more about our benefits culture here.
About the Position
Youll design build and scale modern web applications across the stack: APIs and services in and user experiences in React/. You will set technical direction uphold engineering standards and collaborate closely with product and design. Youll lead by example through architecture code reviews pairing and mentorshiphelping the team deliver reliable maintainable and high-performance software.
Work modality: Hybrid UruguayArgentina. Offices in Carrasco (Montevideo) and Villa Crespo (Buenos Aires).
Onboarding: Full-time position based in Montevideo.
English level: Advanced.
Core Responsibilities
- Own architecture and delivery of scalable backends in NestJS (modular design caching background jobs security best practices real-time features when needed).
- Build high-quality frontends in React/ (SSR/SSG routing forms state performance and accessibility).
- Model query and optimize PostgreSQL/MSSQL; design schemas and data flows for scale and reliability.
- Lead testing strategy across layers (Jest Supertest React Testing Library Cypress); drive meaningful coverage and fast feedback.
- Containerize and ship services with Docker; integrate into CI/CD and cloud environments.
- Establish Git workflows and contribution policies; guide teammates through complex merges and reviews.
- Monitor measure and improve performance and reliability; instrument apps and act on insights.
- Mentor engineers; raise the bar on code quality patterns and technical decision-making.
Requirements
- 6 years building production web applications with TypeScript/JavaScript across backend and frontend.
- Desire to learn new languages and technologies.
- Deep expertise in TypeScript (advanced generics type guards utility/mapped types; scalable typing strategies).
- Expert knowledge of JavaScript fundamentals (event loop async patterns/perf modular architectures).
- Strong experience with (DI guards/interceptors/pipes background jobs with Bull/Redis caching security API performance).
- Strong experience with React/ (SSR/SSG routing data fetching accessibility performance profiling reusable design systems).
- Advanced SQL skills with PostgreSQL/MSSQL (indexing query plans/CTEs migrations replication/HA concepts).
- Proven testing leadership using Jest Supertest React Testing Library Cypress; CI coverage gates and test optimization.
- Proficient with Docker (multi-stage builds docker-compose health checks private registries) and integrating containers in CI/CD.
- Mastery of Git for team-scale collaboration (GitFlow or trunk-based rebases/squash hooks/automation conflict resolution).
- Track record of leading technical initiatives mentoring engineers and making sound architectural trade-offs.
- Growth-mindset drive eager to learn new technologies and quickly turn learning into shipped value.
Nice to Have
- Experience with .
- Experience with Ruby on Rails in production environments.
- Kubernetes or Swarm for orchestration; autoscaling and HA strategies.
- Observability stacks (Grafana/Prometheus Sentry) and performance/load testing.
- Advanced accessibility practices; Tailwind CSS customization and design-system stewardship.
- Experience with real-time features (WebSockets/SSE) end-to-end.
- Contributions to OSS or community knowledge sharing (talks posts libs).
Soft Skills
- Clear communication collaborative mindset ownership and pragmatic problem solving.
Key Skills
- Laboratory Experience
- Vendor Management
- Design Controls
- C/C++
- FDA Regulations
- Intellectual Property Law
- ISO 13485
- Research Experience
- SolidWorks
- Research & Development
- Internet Of Things
- Product Development
About Company
We help companies achieve their business outcomes by providing high-quality solutions across every step of the software engineering process.
