# Senior Fullstack Engineer (Python – Go- React)Hybrid,RemoteColombiaWe are looking for a Senior Full Stack Engineer to build reliable backend services for trading simulation workflows using Python, Django, and Go. You will shape scalable architecture and API contracts, support integrations with payment providers, and contribute to focused frontend tasks in React and Next.js while working closely with product and engineering teams.## Required for this role* **5+ years of experience** in backend or full-stack development.* Strong expertise in **Python** and **Django**, including designing stable, scalable backend services.* Practical experience with **Go** for microservices or backend components.* Solid knowledge of relational databases, particularly **PostgreSQL**.* Experience designing, documenting, and consuming **API contracts** for frontend applications.* Ability to complete basic development tasks using **React** and **Next.js**.* Practical experience with **trading** or a good understanding of terminology such as tick, bid, ask, buy, and sell.* Experience integrating **payment systems**, such as Worldpay or similar providers, and working with **Kubernetes** development or testing environments.* Strong **unit and integration testing** discipline aligned with the Definition of Done, together with clear communication and cross-team collaboration skills.## Your responsibilities* Lead backend feature development using **Python**, **Django**, and **Go** for trading simulation workflows.* Design, document, and maintain API endpoints used by frontend applications.* Implement scalable backend logic for trading, risk, account-related operations, and third-party payment integrations.* Collaborate with frontend engineers to maintain consistent data structures and integration logic.* Support focused UI features and bug fixes using **React** and **Next.js**.* Write comprehensive automated unit and integration tests for backend components.* Deploy and validate services in **Kubernetes** development environments, and troubleshoot production and pre-production issues.* Participate in technical design discussions and mentor other team members.## What you get### Your time off* Up to 15 paid vacation days annually* Additional unpaid days off* 19 Colombian public holidays### Learning & growth* Sombra University workshops and internal learning programs* Tech Communities and knowledge sharing sessions* Language courses and workshops* Mentorship opportunities* Access to the Platzi online learning platform### And even more* Company-provided work equipment* Internal referral program* Bonuses for getting married or the birth of a child* Sombra events and internal initiatives## Before you applyOur recruitment team will carefully review your profile, and if we see a good match with the role, we’ll reach out to you shortly.If you don’t hear from us within 5 business days, it means we’ve decided to continue the process with other candidates for this position. Thanks for understanding.