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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 8 years
- JavaScript 4 years

- Node.js 4 years
Other skills
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
TypeScript
REST API
Electron
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
Bitbucket
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
ElasticSearch
Redis
Cassandra
Golang
GraphQL
Kubernetes
Google Cloud
BigQuery
REST API
Education
MSc.Computer science, advanced systems and networks
Grenoble INP Esisar · 2010 - 2015
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