About Scalepex Scalepex is a nearshore partner that empowers businesses to scale efficiently and effectively through exceptional services. With a strong focus on customer success, innovation, and cultural alignment, we support companies in building high-performing teams across industries. At Scalepex, we believe in fostering an environment where our people can thrive, grow their careers, and make a real impact. About the Role We are looking for a Full Stack Developer to join a high-impact team building a Partner Marketplace platform from the ground up. This is a hands-on full-stack engineering role. You will be embedded in a small, senior team, working across backend services, frontend applications, and cloud infrastructure. You will own real features end-to-end from API contracts to UI components to deployment pipelines and you will be expected to move fast without breaking things.

• Architect 3D object detection models, including multi-modal approaches (camera, LiDAR, Radar). • Build and maintain data collection and evaluation (metrics) pipeline. • Develop a proprietary multi-modal dataset for training and evaluation. • Train, deploy and monitor 2D/3D object detection models to production. • Experiment SOTA models’ performance. • Mentor junior engineers about best practices.

• Designing and building end-to-end product features across backend services and our React frontend. • Building well-structured, testable backend services and clean, reusable frontend components. • Contributing to a multi-stack production environment, improving existing systems thoughtfully while helping evolve the overall architecture. • Modelling domains, defining boundaries, and contributing to architectural decisions that keep the system coherent as it scales. • Using AI tools to accelerate development — while reviewing, validating, and refining generated code before it reaches production. • Owning work beyond feature delivery: CI/CD, observability, performance, and production behaviour. • Participating in code reviews and technical discussions with a focus on clarity, trade-offs, and engineering judgement. • Improving reliability, security, and operational robustness as the platform grows. • Raising the engineering bar through thoughtful feedback, pragmatic decisions, and steady improvement rather than dramatic rewrites.

• Own consequential systems at Rebuy including billing and payments infrastructure. • Design and build Rebuy’s centralized billing system to handle merchant billing and partner payments. • Design and implement secure, well-structured APIs in PHP and Go. • Lead migration of Code Igniter 2 codebase to Code Igniter 4. • Partner with product and engineering to identify where AI agents can automate workflows. • Contribute to the engineering culture by establishing best practices.