Senior Backend Engineer (Golang, API Platform)

Location: 100% remote work  Salary: 160 – 180 PLN net/h (B2B via Experis) Important: Candidates available ASAP or up to 2 weeks; 4 weeks’ notice max Responsibilities:  Work with the team to develop key features to improve platform stability, reduce maintenance cost, and improve developer experience for our internal customers. The team covers a wide range of areas; depending on your skills, you will be supporting the development of some of the following areas: • Design and develop major features for our Monetization service, handling real-time transactions and balances computation • Improve our infrastructure by working on various tasks to lower maintenance costs and improve security posture • Implement abstraction layers as backend APIs to allow other systems to interact with the platform • Extend the internal developer portal UI to expose APIM features to other engineering teams Requirements: • Experience with Golang • Good knowledge of relational database technologies (Postgres), including sharding, partitioning, and write-heavy workload • Experience developing REST and gRPC APIs • Follow best code quality practices, including testing • CI/CD technologies, including source code management (GitHub), pipelines, secrets, artefacts • GitOps practices and infrastructure automation, including infrastructure as code • Security, privacy, and compliance essentials Nice to have: • Software architecture fundamentals • Software-defined operating models and technologies, including IaaS, CaaS, and PaaS • Certificate Management automation (Cert Manager) • Experience with Typescript • Experience in implementing UI using the React framework • Development of backend-for-frontend APIs, including security best practices • Knowledge of Internal Developer Portal technologies such as Backstage General skills and experience: • Experience working in production-grade platform-related teams (Cloud, Infrastructure, Internal Developer Experience) • Experience building and operating mission-critical systems • Excellent communication and collaboration skills • MSc in computer engineering or equivalent desirable Our offer: • MultiSport Plus • Group insurance • Medicover Premium • e-learning platform