Client work
Video delivery, in Go
Tech lead on the video team at TF1 since 2023 — Temporal workflows, DASH and HLS packaging, delivery to OTT and IPTV for France's largest broadcaster.
TF1 · Feb 2023 → today
Available to discuss your projects
I draw the map,then I shipthe system.
I'm Vincent Composieux, a freelance Tech Lead and Software Architect near Annecy. Fifteen years spent turning tangled backends into systems a team can reason about. Right now: video delivery at TF1, and Archyl, the architecture platform I founded.
- Role
- Tech Lead · Software Architect
- Based
- Annecy, France · remote friendly
- Building since
- 2009
- Works in
- English · French
§ Now
Kept current, not archived
What I'm working on today.
My own product
Archyl
The architecture intelligence platform I founded in December 2025. It reads your repositories, builds a C4 model you can edit, and tells you when the code drifts away from it.
Annecy · France
--:--:-- CET
Working from the French Alps with teams across Europe. Booking backend, architecture and fractional CTO work.
45.8992° N6.1296° E
§ Product
Founder · archyl.com · since Dec 2025
Architecture docs go stale.
Archyl keeps them honest.
Every team I've worked with had the same problem: the diagram on the wiki stopped matching the code months ago, and nobody noticed. New joiners learn the system from whoever happens to be free, and the people who understand it all become a bottleneck.
So I built the tool I kept wishing for. Archyl reads your repositories, drafts a C4 model you can edit, then watches the gap between that model and what is actually shipping — and correlates it with your DORA metrics, so architecture debt shows up as something a business can act on.
Solo founder: product, engineering, design and go-to-market. Go backend, Next.js frontend, PostgreSQL, multi-tenant, and LLM agents for insights and auto-fix proposals.
as drawn in Archyl- L1 System context
- L2 Container
- L3 Component
- L4 Code
Model ↔ code drift6%
§ Missions
6 client missions · one craft
Where I've shipped.
- TF1 - FreelanceTech lead ~ Architect (Video Team)Feb 2023 - PresentGo · Temporal.io · AWS MediaConvert
- Crédit Agricole - FreelanceTech lead ~ Cloud Architect2022 - 2023Go · Terraform · Kubernetes
- TF1 - FreelanceTech lead ~ Architect (Backend Team)2018 - 2022Go · GraphQL · gRPC
- France Télévisions - Eleven LabsArchitect - France.tv2018 - 2018PHP · Symfony · Elasticsearch
- ETS GlobalTech lead ~ Architect2017 - 2018PHP · Symfony · Elasticsearch
- CNAMTS - Digital factoryTech lead2016 - 2017PHP · Symfony · Elasticsearch
§ Stack
Daily drivers marked ◆
What I actually reach for.
Languages
- Go
- PHP · Symfony
- TypeScript
- Rust
Architecture
- Temporal.io
- gRPC · Protobuf
- Kafka
- GraphQL
Cloud & delivery
- Kubernetes
- Terraform
- AWS · GCP
- ArgoCD · GitOps
Data
- PostgreSQL
- Redis
- Elasticsearch
- MongoDB
Observability
- OpenTelemetry
- Prometheus
- Grafana
- Datadog
§ Writing
25 essays · 5 conference talks · EN / FR
Writing, not content.
08 Feb 2025
Optimizing build times with Bazel and Buildfarm
Optimizing build times is crucial for maintaining a fast and efficient development pace in continuous integration pipelines.
09 Mar 2024
LLM with Ollama and similarity search with Qdrant, vector database
I have been interested in vector databases. Unlike a relational database, where data is organized into tables with rows and columns, in a vector database, data is represented as vectors in a high-dimensional space.
29 May 2023
Construct robust workflows with Temporal.io using Go
When it comes to building complex, long-running workflows in Go, developers often face challenges in managing dependencies...
§ Engagements
Pick the shape that fits
Three ways to work together.
Tech Lead · GoLong-term3+ months
Embedded in your team as a backend tech lead. Architecture, mentoring, and shipping Go services that hold under load.
- Own a critical system
- Set standards and CI/CD
- Grow the team
Cloud ArchitectProject1–6 months
Design cloud-native architecture on AWS or GCP: Kubernetes, Terraform, GitOps and the observability to run it.
- Architecture review
- Infrastructure as code
- Migration and cost plans
Fractional CTOPart-time2 days a week
Technical leadership for startups that need the judgement without the full-time hire.
- Technical roadmap
- First engineering hires
- Due diligence and board comms
§ Contact
Got a gnarly
backend problem?
hello@composieux.frUsually replies within 24 hours · Annecy, France · works in EN / FR
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Theme
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