About you You are a Senior developer with strong full-stack experience, capable of owning features end-to-end — from Python back-end services to React-based user interfaces. You are comfortable working in a cloud-based SaaS environment, translating ambiguous product requirements into clear technical proposals, and communicating trade-offs with both engineering and non-technical stakeholders. You have a strong engineering mindset, care about code quality, testing, and maintainability, and are interested in developing deep domain knowledge in the oil, gas, and energy sector. About the project The project is a FinTech SaaS platform in the energy domain, focused on cash flow forecasting, financial analytics, and operational planning for oil, gas, and energy companies. The platform supports forecasting, reporting, profitability analysis, CO₂-related calculations, and other data-driven processes across the energy sector. The product is also actively expanding into green energy and advanced analytics. Your area of responsibility * Owning full-stack features end-to-end, from scoping to deployment and monitoring; * Developing backend services using Python; * Building user-facing functionality with React and TypeScript; * Designing and maintaining REST APIs with OpenAPI contracts; * Working with structured datasets and supporting data analysis needs; * Contributing to architecture decisions and improving system maintainability; * Writing and maintaining backend and frontend tests; * Reviewing code and supporting engineering quality standards; * Communicating technical trade-offs to engineers and non-technical stakeholders.
Skills and requirements * 5+ years of commercial software engineering experience; * Strong production experience with Python 3.12+; * Hands-on experience with Flask and/or FastAPI; * Experience with async/await, type annotations, and clean backend architecture; * Production experience with React 18+ and TypeScript; * Experience with state management tools such as Redux, Zustand, or React Query; * Experience designing REST APIs with OpenAPI contracts; * Experience working with structured datasets using pandas and/or NumPy; * Production experience with document databases such as MongoDB, Firestore, or similar; * Experience with testing tools such as pytest, Vitest, or Jest; * Hands-on experience with Docker and Docker Compose; * Strong ownership, communication skills, and ability to work with ambiguous requirements.
Will be a plus * Experience with MongoDB aggregation pipelines, Mongoose, or PyMongo; * Experience with Google Cloud Platform, including Cloud Run, Cloud Functions, or GCS; * Exposure to LLM APIs or AI agent frameworks; * Experience in energy, oil & gas, financial analytics, forecasting, or reporting platforms.
We offer * A real opportunity to influence the product, architecture, and technical decisions; * Direct communication with C-level management, without unnecessary bureaucracy; * Remote-first environment; * Long-term and enjoyable cooperation; * 20 paid working days of vacation per year; * 5 paid undocumented sick days; * Official public holidays as days off; * Personal legal support; * English classes; * Team-building events and a friendly, supportive atmosphere.
