Fabien H.

Lead Software Engineer

Germany

Trusted member since 2025

10 years of experience

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

Golang8 years

JavaScript4 years

Node.js4 years

REST API10 years

12+

Experience3

Lead Engineer Consultant

PyleHound UG•

Legal Tech

May 2025 - Sep 2025 · 4m

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.

React.js

TypeScript

REST API

Electron

Tech Lead Consultant

WID LLC•

Information Technology (IT) and Services

Dec 2024 - Dec 2025 · 1y

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.

Golang

Bitbucket

REST API

Lead Backend Engineer and Manager

JustWatch•

Marketing and Advertising

Sep 2016 - Dec 2024 · 8y 3m

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.