Senior GO Engineer

Avenga is an international engineering firm helping businesses operate with AI at the core. With 6,000+ experts worldwide, we combine engineering expertise with AI-native thinking to turn ambitious ideas into real-world impact across industries, technologies, and markets. At the core of the role We are looking for a Senior Go Engineer to join a team working on core platform and integration technologies in a cloud-native environment. In this role, you will contribute to the design and development of scalable backend services, focusing on system integrations, data processing, and platform reliability. You will collaborate closely with engineering and architecture teams, helping shape technical solutions and drive high-quality delivery in a modern microservices ecosystem. Core skills you’ll bring 6+ years of professional software engineering experience, including delivery in a consulting or contract capacity Strong React and TypeScript development experience Experience building backend services in Go (at least 1 year) and in Python — production experience in both preferred Demonstrated experience integrating third-party REST APIs: API key and OAuth authentication, pagination, rate limiting, retries, idempotency, and error handling Knowledge of REST APIs, microservices, and distributed systems SQL and data modelling experience, including ORM use (SQLAlchemy, Django ORM, Hibernate, or equivalent) Working knowledge of containers, Kubernetes, and CI/CD Comfortable working with AI-assisted development tooling, and able to critically review generated code Nice-to-have: FinOps or cloud cost management experience; familiarity with the FOCUS standard IT Asset Management or software licensing domain knowledge (FlexNet Manager Suite a plus) Cloud billing and usage APIs: AWS Cost and Usage Report, Azure Cost Management, GCP billing export LLM provider APIs and usage or analytics endpoints, and token-based billing models AWS and Databricks experience The impact you'll create Design and maintain scalable Go-based microservices Build and maintain Python connectors and collectors against third-party APIs (AWS, Azure, GCP, LLM providers, and SaaS vendors), handling credential and token management, pagination, rate limits, retries, and partial failure Build modern web applications using React and TypeScript Build data-dense interfaces: cost and usage dashboards, connector configuration tiles, and admin/setup flows Work to the established connector pipeline stages - credential management, connector execution, normalisation, persistence, and presentation - and extend those stages rather than working around them Model and persist data with SQL, Python ORMs (SQLAlchemy or similar), and Databricks Normalise vendor cost and usage data to the FOCUS FinOps standard, including token- and credit-based AI billing People are at the core of Avenga. We provide equal opportunities regardless of race, ethnicity, gender identity, sexual orientation, disability, age, religion, or any other characteristic. We are committed to a respectful environment where everyone can be themselves, share their ideas, and feel that they belong.