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About The Role
We are looking for a Platform Backend Engineer to join our tech team and take ownership of the design, development, and optimization of backend services, APIs, microservices, and data pipelines. You’ll build a high-performance platform capable of handling large data volumes, focusing on efficient code, data transmission, messaging systems, database interactions, and overall backend performance. This is a hands‑on engineering role working closely with cross‑functional teams including frontend, mobile, QA, and operations. You’ll actively participate in technical decision‑making, backend architecture design, and the continuous improvement of our platform. We’re looking for a versatile backend engineer—not purely infrastructure‑focused, nor exclusively backend—someone comfortable working across the stack as needed, emphasizing code efficiency, database optimization, and robust data flow.
What You’ll Be Doing
Microservices & APIs
- Develop and maintain efficient microservices primarily in Go, Python, or Rust.
- Design high‑concurrency RESTful APIs emphasizing low latency and horizontal scalability.
Data Management & Modeling
Design, optimize, and maintain database schemas, particularly PostgreSQL with TimescaleDB for handling large‑scale time‑series data.Ensure optimized indexing, partitioning, and query efficiency for rapid data retrieval.Messaging & Data Pipelines
Build robust messaging systems using message queues like RabbitMQ, SQS, or similar.Implement efficient ETL / ELT pipelines ensuring high data quality, consistency, and traceability for downstream analytics.Containerization & Deployment
Package applications using Docker and deploy / manage services in orchestrated Kubernetes environments.Automation & CI / CD
Define and maintain automated testing and deployment pipelines using Jenkins, GitLab CI, or GitHub Actions.Occasionally manage cloud resources through infrastructure as code (Terraform / CloudFormation) when necessary.Collaboration & Cross‑functional Work
Collaborate closely with frontend, mobile, QA, and operations to identify bottlenecks and implement solutions.Participate in code reviews, technical documentation, and promote best engineering practices across teams.What We’re Looking For
3+ years of experience developing backend services, APIs, microservices, and data‑driven applications.Strong programming skills in Go, Python, or Rust.Proven experience with relational databases, ideally PostgreSQL; TimescaleDB experience is a significant plus.Familiarity with message brokers (RabbitMQ, SQS, Kafka, or similar).Hands‑on experience with Docker and Kubernetes.Experience building and maintaining CI / CD pipelines (Jenkins, GitHub Actions, or GitLab CI).Comfortable working with infrastructure as code (Terraform or CloudFormation) as needed.What Awaits You At B4b
Have a visible impact : Your work will shape the brand voice and market presence of a fast‑growing, mission‑driven company.Collaborate with passionate people : Join a team that truly cares about sustainability, technology, and doing things right.Grow your career : Work across offline and digital marketing in a role that offers broad exposure and development opportunities.Work globally, act locally : Coordinate with stakeholders across Spain, the UK, Norway, and beyond — while based in our Barcelona HQ.Be part of something bigger : Help drive the maritime industry's transition to cleaner, smarter, and safer solutions.Seniority level
Mid‑Senior levelEmployment type
Full‑timeJob function
Engineering and Information TechnologyMaritime Transportation#J-18808-Ljbffr
