Senior Backend Engineer Tech Lead (3-4 month long) - Remote - Latin America
Contract (3-4 month) Tech Lead role for a senior backend engineer working remotely from Latin America, embedded in a US client's team. Day-to-day work centers on architecting Node.js/TypeScript BFF and microservice backends for high-scale e-commerce on AWS with MongoDB and Salesforce OCAPI, plus LLM tooling like LangChain.
- Compensation
- Not disclosed
- Location
- Manaus, Brazil
- Work setup
- Not specified
- Seniority
- Lead
- Employment
- Full time
- Experience
- 2+ years
- Category
- Backend
- Posted
Skills
Must have
- 6+ years of professional software engineering experience
- 2+ years of technical leadership influencing architecture and engineering direction
- Advanced English
- Four-year college degree
- Expertise in Node.js and TypeScript
- Track record architecting Backend-for-Frontend (BFF) systems and API middleware for mobile platforms
- Experience with AWS services (EC2, ECS, Lambda, ElastiCache, S3, CloudFront)
- Solid background in MongoDB and optimizing backend deployment pipelines
- Experience with Salesforce OCAPI/API, CMS-driven content management, and mobile third-party integrations
- Designing and securing scalable microservices and event-driven architectures for high-scale e-commerce systems
- Comfortable with AI development tools, including LLM integration (LangChain or LlamaIndex) and agentic workflows
- Skilled at representing engineering teams in client-facing interactions and collaborating with external vendors
- Ability to create and maintain continuous integration and delivery of applications
- Experience working on Agile/Scrum teams
- Meaningful experience working on large, complex systems
- Currently authorized to work full-time in the country of the job posting (no visa sponsorship)
Nice to have
- Professional or personal project experience with Cursor, Windsurf, or Google Antigravity
- Professional or personal project experience with Claude Code, Gemini CLI, Codex, or Copilot CLI
Full description
Senior Backend Engineer Tech Lead (3-4 month long) - Remote - Latin America
Latam
About FullStack
FullStack is your AI-native engineering partner, built to turn AI capability into certainty. Most companies can demo AI; few can get it to production and prove what it produced. We close that gap with three capabilities, AI built into your products from the start, elite vetted talent who apply it, and transparent execution that shows value every step of the way. With now over 600 customers in North America, FullStack is one integrated partner for all your AI engineering needs. With FullStack, you move forward with confidence.
We’re most proud of:
Offering life-changing career opportunities to talented software professionals across the Americas.
Building highly-skilled software development teams for hundreds of the world’s greatest companies.
Having delivered hundreds of successful custom software solutions, which have positively impacted the lives and careers of millions of users.
Our 4.1-star rating on GlassDoor.
Our client Net Promoter Score of 68, twice the industry average.
The Opportunity
Join our talent network and connect with U.S. clients for flexible, project-based development work as a Senior Backend Engineer Tech Lead (3-4 month long).
You will integrate directly into our client's team and work alongside their existing designers and engineers on a daily basis.
What We're Looking For
6+ years of professional software engineering experience.
2+ years of experience in technical leadership influencing architecture and engineering direction.
Advanced English is required.
Successful completion of a four-year college degree is required.
Expertise in Node.js and TypeScript.
Track record of architecting Backend-for-Frontend (BFF) systems and robust API middleware specialized for mobile platforms.
Demonstrated experience working with AWS cloud services (specifically EC2, ECS, Lambda, ElastiCache, S3, and CloudFront).
Solid background in MongoDB and optimizing backend deployment pipelines.
Experienced with Salesforce OCAPI/API, CMS-driven content management, and mobile-specific third-party integrations.
Strong history of designing and securing scalable microservices and event-driven architectures for high-scale e-commerce systems.
Comfortable working with AI development tools, including LLM integration (LangChain or LlamaIndex) and agentic workflows.