Senior Fullstack Engineer

Senior Full-Stack Engineer

Posted Date Feb 14, 2026 Employment Type Full-time Experience Level Mid-Senior level Location Brazil Category ** Programming ** Company **99x brazil **

Our client is building the operating system for global mobility. By combining artificial intelligence with a vertically integrated supply chain, they orchestrate every step of employee relocations across 160+ countries. The team is lean, ambitious, and intensely focused on transforming a fragmented, manual industry into a unified platform that delivers a premium, white-glove relocation experience at scale.

**About The Role

** You will work across product, AI, and infrastructure to design and build the systems that power global relocations for enterprise customers. You'll play a key role in shaping the company's technical foundation as it scales from early traction to robust, platform-level deployments.

Expect close collaboration with product, design, and operations, along with the autonomy to make meaningful architectural decisions and directly influence the direction of the technology.

**What You'll Do

**

• Own and ship end-to-end product features across backend services, APIs, and frontend applications
• Build AI-driven workflows and supply chain integrations that power the platform
• Design scalable data models with Supabase and Postgres, including row-level security for enterprise multi-tenancy
• Develop intuitive interfaces that make complex relocation data easy to act on
• Partner with Product, Design, and Operations to turn ambiguous problems into shipped software
• Contribute to architectural decisions, system design, and engineering standards as the team grows
• Mentor future engineers and help define the engineering culture

**Requirements

**

• Fluent English
• Frontend: TypeScript, React, Next.js Interested in remote work opportunities in Development & Programming? Discover Development & Programming Remote Jobs featuring exclusive positions from top companies that offer flexible work arrangements.
• Backend: TypeScript, Node.js, Supabase (Postgres, Edge Functions)
• Infrastructure: AWS, Vercel
• Auth & Data: Supabase, Postgres, Row-Level Security
• Tooling: GitHub, CI/CD, analytics and observability
• Strong fundamentals and product thinking over exact tool match

**Core Qualifications

**

• You likely have 5+ years of professional engineering experience with meaningful full-stack ownership
• You've built and shipped production web applications with modern TypeScript or JavaScript frameworks
• You have strong fundamentals in backend systems, APIs, databases, and data modeling
• You've owned large features or systems end-to-end, from design through production and iteration
• You're comfortable in fast-moving, ambiguous environments where scope isn't always defined

**What We Look For

**

• Full-stack ownership instinct. You naturally pull across the entire stack to ship
• Strong user empathy and attention to real-world workflows and edge cases Browse our curated collection of remote jobs across all categories and industries, featuring positions from top companies worldwide.
• Product intuition that goes beyond implementation to ask 'should we build this?'
• Clear, direct communication across engineering, product, and operations
• Bias toward shipping, learning, and iterating quickly

**Nice to Have

**

• Experience with Supabase, Postgres, or serverless architectures
• Familiarity with AWS infrastructure and deployment pipelines
• Experience building B2B SaaS or operational software at scale
• Exposure to AI-powered or data-driven products
• Early-stage startup experience where you wore many hats

**Benefits

**

• Your pick when it comes to employment models: CLT/PJ/Cooperativa;
• We provide the necessary resources for you to grow and learn on the job, the latest-gen laptops, and great ultra-wide, IPS panel monitors;
• A fully remote work environment with flexible working hours;
• Bonus for any referrals that we end up hiring;

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