Senior F# Developer

La Fosse; Las Palmas de Gran Canaria; Presencial; EUR 83.000 - 131.000; Jornada completa

Descripción de la vacante

La Fosse is seeking a Senior F# Developer for a freelance assignment in Spain. You will own the full lifecycle of a Fleet Management System, delivering backend services in F# and .NET, with cloud-agnostic design and real-time requirements.

You'll collaborate with cross-functional teams, design RESTful APIs, and ensure code quality through reviews, CI/CD, and testing strategies. Prior experience with low-latency systems is valued.

Formación

• Backend focus with F# and .NET Core across the full stack.
• Experience with RESTful microservices.
• Low-latency, high-scale distributed systems experience.
• Cloud-agnostic architectures and deployment.
• Fleet Management System domain is a plus.

Responsabilidades

• Own full lifecycle design, build, test and deploy of distributed cloud-agnostic systems.
• Engineer resilient, scalable services with high availability.
• Lead design and code reviews to lift codebase and team.
• Shape RESTful API design: versioning, auth, retries and rate limiting.
• Keep builds green; manage branching and CI/CD.
• Collaborate with R&D, IT and Ops to align product needs.
• Advise Product Owners on risks and tech debt; drive improvements.

Conocimientos

Agile

BDD/TDD

Distributed systems

Herramientas

F#

.NET Core

C#

Python

Kubernetes

RESTful APIs

GitLab/Jenkins CI/CD

SQL/NoSQL databases

Descripción del empleo

Senior F# Developer La Fosse Las Palmas de Gran Canaria, canary islands, Spain

Descripción del trabajo

Job title: Senior F# Developer

Contract: Freelance

Contract Duration: 6 months + Transition to permanent contract

Location: Barcelona or Algeciras

We are hiring for an F# Developer for our client in the transportation sector. You'll own the full application lifecycle research, design, development, testing and continuous deployment and delivery of a Fleet Management System. It's a mission critical, real time systems role, ideal for someone with deep functional and object oriented programming expertise.

Key Responsibilities:

• Own the full lifecycle design, build, test and deploy of complex distributed cloud agnostic systems, delivering quickly through ambiguity


• Engineer resilient systems, owning the service's availability and scalability


• Lead design and code reviews that lifts both the codebase and the team


• Shape RESTful API design end to end versioning, backwards compatibility, authentication, retry mechanisms and rate limiting


• Keep builds green and uphold the branching / code management strategy


• Work across R&D, IT and Business Operations to align product and operational needs, and build integrations across internal and customer systems


• Advise Product Owners on risks, technical debt and improvement opportunities, and drive continuous improvement through retrospectives and cross-team communitie

Required skills:

• Design and programming skills primarily in backend with a focus on enterprise level solutions using F# and .NET Core, .NET 6/7/8.


• Working experience with C# and Python is a plus.


• Experience of developing and debugging RESTful microservices


• Experience working on low latency, highly scalable applications


• Strong design and development experience in distributed, clustered, and multi-threaded applications


• Experience in design and implementation of service interface and public APIs


• Strong proficiency in object-oriented programming C++ (modern standards preferred)


• Experience with Production-Grade Container Orchestration viz. Kubernetes etc.


• Experience working with databases and data models SQL, NoSQL, document DB, Cosmos DB etc.


• Experience with Fluent NHibernate, Protocol Buffers & Robot Framework


• Solid experience with CI/CD tools – Gitlab, Jenkins


• Strong experience of Agile, Behavioural Driven Development & Test-Driven Development


• Hands on experience in modular development of enterprise level application, development experience with Fleet Management System (FMS) is highly preferred