• Design and implement REST/GraphQL endpoints, including serializers, permissions, and pagination. • Develop domain logic with idempotent operations, audit logging, and rate limiting. • Integrate with Airflow (events, callbacks, webhooks) and authentication/authorization frameworks (OIDC/JWT).

• Translate technical requirements into detailed backend designs that creates tier 1 scalable systems and a joyful experience for the customer. • Be responsible for driving innovation, maintainability, improving performance, scalability, and creating headless systems under strict timelines. • Lead backend engineering and solve complex problems such as: Ensuring optimal schema design, 100% uptime and high-end security. • Credit scoring system → what’s the best way to gamify the credit scoring experience for our customers while ensuring a high ROI on lending bets? • Invoice matching algorithm → what’s the optimal way to match invoices to deposits accurately at scale when we lack information? • Payment orchestration → how can we best optimise our payment orchestration to lower our costs and increase our margins? • Analytics system → how can we set up an analytics system that tracks all relevant numbers? • Integrate our technology with the following external systems: Payment processors like Stripe. Open banking platforms like Plaid. Accounting systems like QuickBooks and Economic -> Bonus points for submitting your application with GitHub links to applications you have developed

Please submit your CV in English and indicate your level of English proficiency. Mindrift connects specialists with project-based AI opportunities for leading tech companies, focused on testing, evaluating, and improving AI systems. Participation is project-based, not permanent employment. About the Role This project is suited for a Senior Python developer with deep functional testing experience, strong Linux and Docker skills, the ability to read code across multiple languages with the support of LLMs (e.g., C, Rust, Go) and translate requirements for migration tasks, and confidence using tools like Roo Code or Claude Code to accelerate iterative development. Key Responsibilities - Create functional black box tests for large codebases in various source languages - Create and manage Docker environments to ensure 100% reproducible builds and test execution across different platforms - Monitor code coverage and configure automated scoring criteria to meet industry benchmark-level standards - Leverage LLMs (Roo Code, Claude) to accelerate development cycles, automate repetitive tasks, and improve overall code quality

• Develop cutting edge features/product line for V-Key • Write high quality code in terms of functionality, modularity, security and compatibility • Code highly concurrent, efficient and scalable public APIs for user base in the range of multi-millions • Close coordination with Product Owners and Chapter Leads on timelines and expected delivery milestones of the user stories/features • Keeping on top of new technologies & techniques and evaluate them to improve overall engineering practices • For on-premises model, deploy V-Key’s products within customer’s backend ecosystem and provide on-site support to customers when needed • Act as L2/L3 support and work with customer support team on issues related to V-Key products • Diagnose, troubleshoot and identify solutions using Root Cause Analysis for reported issues • Collaborate with cross-functional teams (ie. internal product development, QA, Customer support and Customer Technical team) to resolve incidents and problems • Assist in guiding the junior members in the development team on Server development skills and best practises.