Software engineer (back-end)

A software eningeer wanted! Our diverse, multi-discipline and multicultural team of 8 people are responsible for the full technology stack which delivers critical services to some of the largest energy consumers in the world. We’re a small but nimble team in which your contributions will directly impact the end products. Location: anywhere within E&C legal entities, remote & hybrid options Contract: 1 year (on payroll or freelance) Why E&C Consultants? You can read more details here: Becoming an E&Cer, but in big lines: We are a Great Place To Work® certified company - employee satisfaction stamped by our staff We provide Growth Opportunities - as E&C continues to expand, you grow with us We implemented a Flexible and Empowering Culture - we pioneer with our unique Teal management style, which includes Empowerment, Ownership, Self-Management, Integrity, Transparency and Trust We offer 46 days off / year (yes, 46!) regardless of the country you live & work in What about the role? Join our team to design and build robust, scalable backend services that form the core of our platform. You'll leverage modern architectural principles and technologies to create high-quality APIs, manage data effectively, and seamlessly integrate with external systems. This role offers the opportunity to take ownership of significant backend components and drive technical solutions. In more details, you’ll do: API Design & Development: design, develop, and maintain robust, scalable, and well-documented APIs using Python (FastAPI) Hexagonal Architecture Implementation: apply Hexagonal Architecture principles (also known as Ports and Adapters) to structure backend services, ensuring clear separation between core business logic, application services, and external concerns like databases, APIs, and UIs. This enhances maintainability and testability Data Modelling & Management: design and implement efficient database schemas using SQLAlchemy for relational data and manage data structures for our data platform (Snowflake) Third-Party Integrations: lead the development of integrations with third-party vendor APIs, handling authentication, data mapping, error handling, and ensuring reliable data exchange Testing & Quality: write comprehensive unit, integration, and API tests to ensure the reliability, performance, and correctness of backend services Collaboration: partner closely with front-end engineers, product managers, and senior engineers to define requirements, troubleshoot issues, and deliver high-quality features Deployment & Infrastructure: Contribute to CI/CD pipelines and deployment processes, leveraging Docker and Azure What will set you up for success? We believe you’ll thrive in this role if you bring: A Collaborative Mindset: data-driven challenger, constructive skeptic, mission-driven architect who brings the expertise, but also are open to champion team rituals, and build camaraderie Experience: 2-5 years of professional backend development experience API Integration Expertise: strong knowledge and practical experience integrating with various third-party APIs, including understanding authentication mechanisms (OAuth, API Keys), data transformations, and error handling strategies Data Modelling: proficiency in data modelling and working with relational databases (e.g., PostgreSQL) and data warehousing solutions (Snowflake) Testing: experience with backend testing frameworks and methodologies Problem Solving: ability to independently analyze, debug, and solve complex backend challenges Collaboration: excellent communication and teamwork skills Cloud/DevOps Awareness: Familiarity with cloud platforms (e.g., Azure) and containerization (Docker) is beneficial Tech Stack Proficiency: Strong command of Python and its ecosystem, including FastAPI, SQLAlchemy, Pydantic, and Alembic Proven experience designing and implementing RESTful APIs Demonstrated understanding and practical application of Hexagonal Architecture or similar domain-driven design patterns What else is nice to have? Experience with message queues (e.g., Kafka, RabbitMQ) or background task queues (e.g., Celery) Experience with infrastructure-as-code tools If you are still here and reading, you must be really interested. Great, as E&C is the best place to be! Last but not least then, a sneak peek into our application process: First call with HR or CTO - 1 hour Assessment: online ability tests + personality questionnaire - 45min Final round interview: Business case (can be prepared in advance) & discussion on the online assessment + meeting the team - 90min The process usually takes around 2-3 weeks. Time to click apply!