Fabien H.

Lead Software Engineer

Fabien is a Lead Software Engineer with over 10 years of experience building backend and full-stack systems. He specializes in Golang, PostgreSQL, and distributed architectures, focusing on scalable, cloud-native platforms.

He has led the development of large-scale B2C systems serving millions of users, particularly at a global streaming platform. His work encompassed public APIs, data-intensive services, Kubernetes-based infrastructure, and AI-powered products—delivering solutions from MVPs to fully mature production systems.

Known for strong product judgment and a focus on simplicity, Fabien consistently avoids over-engineering while guiding teams through complex projects. He holds an MSc in Computer Science and combines technical expertise with leadership to deliver reliable, high-performance software.

Main expertise

  • Golang
    Golang 8 years
  • JavaScript
    JavaScript 4 years
  • Node.js
    Node.js 4 years

Other skills

    Fabien

    Fabien H.

    Germany

    Get started

    Selected experience

    Employment

    • Lead Engineer Consultant

      PyleHound UG - 4 months

      PyleHound is a Berlin-based startup focused on AI-powered legal document processing.

      • Led the technical delivery of an AI-based legal document parser from concept to MVP.
      • Built and integrated frontend components using React and Electron, ensuring usability for non-technical users.
      • Delivered a functional MVP on time and within budget, validating the product direction for future investment.

      Technologies:

      • Technologies:
      • React.js React.js
      • TypeScript TypeScript
      • REST API REST API
      • Electron Electron
      • AI AI
    • Tech Lead Consultant

      WID LLC - 1 year

      • Provided hands-on guidance in Go-based backend systems, including code reviews and refactoring strategies.
      • Helped teams unblock critical delivery risks by simplifying designs and improving system reliability.
      • Collaborated closely with client engineers and leadership to align technical solutions with business constraints.

      Technologies:

      • Technologies:
      • Golang Golang
      • Bitbucket Bitbucket
      • REST API REST API
    • Lead Backend Engineer and Manager

      JustWatch - 8 years 3 months

      JustWatch is a globally used streaming guide platform helping millions of users discover movies and TV shows across providers.

      • Led the design and evolution of large-scale backend systems that served millions of monthly active users worldwide.
      • Built and maintained the core public API, enabling multiple frontend clients and external integrations at scale.
      • Drove architectural decisions across backend, frontend, product, and DevOps teams, ensuring long-term scalability.
      • Took ownership of data architecture, optimized large PostgreSQL datasets, and introduced technologies such as Elasticsearch, Redis, Cassandra, and BigQuery where appropriate.
      • Supported and helped bootstrap the Product team by collaborating closely with product owners on feasibility, trade-offs, and delivery strategy.
      • Contributed to DevOps tooling and Kubernetes-based infrastructure on Google Cloud, improving deployment safety and operational visibility.
      • Transitioned into an engineering management role after 2021, handling hiring, mentoring, performance reviews, and team growth.
      • Balanced hands-on engineering with leadership responsibilities, maintaining a strong technical presence while scaling the team.

      Technologies:

      • Technologies:
      • PostgreSQL PostgreSQL
      • ElasticSearch ElasticSearch
      • Redis Redis
      • Cassandra Cassandra
      • Golang Golang
      • GraphQL GraphQL
      • Kubernetes Kubernetes
      • Google Cloud Google Cloud
      • BigQuery BigQuery
      • REST API REST API

    Education

    • MSc.Computer science, advanced systems and networks

      Grenoble INP Esisar · 2010 - 2015

    Find your next developer within days, not months

    In a short 25-minute call, we would like to:

    • Understand your development needs
    • Explain our process to match you with qualified, vetted developers from our network
    • You are presented the right candidates 2 days in average after we talk

    Not sure where to start? Let’s have a chat