We program maintainable backend architectures, RESTful API ecosystems, and real-time web applications built for reliable data synchronization under heavy load.
8 yrs
Shipping APIs
Python · Go
Core Stacks
EU Hosted
GDPR Aligned
< 4 hrs
First Reply
Heavy Load Test · 24h
“They handed us a backend we can actually read. Six months later we are still shipping features without fear of the deploy button.”
92
Backends in Production
0
Data-Loss Incidents
4.9/5
Client Handover Score
14 d
Average API Delivery
Every engagement below is scoped, priced, and time-boxed up front. Pull the card that matches your problem and we will wire it into a delivery plan.
A full service map of your system: module boundaries, data flow, caching strategy, and scaling notes written as diagrams plus a build-ready spec.
A production REST surface with versioned routes, pagination, idempotent writes, and OpenAPI documentation your partners can actually integrate against.
WebSocket and SSE channels with conflict resolution, reconnect handling, and last-write-wins rules so every client converges on the same state, even on flaky mobile networks.
Normalization pass, index design, and slow-query surgery on your existing Postgres or MySQL instance.
Session and token handling with granular roles, so permissions live in one place instead of scattered checks.
Stripe, Twilio, Salesforce, or that in-house SOAP relic — connected with signed webhooks, retry queues, and reconciliation jobs that never double-charge a customer.
We flood your staging environment until something breaks, then fix it: k6 scenarios, connection-pool limits, queue backpressure, and a written headroom report.
Push-to-production without the ritual: automated tests, preview environments, and a one-click rollback path.
Metrics, structured logs, and traces wired into dashboards with alert rules that page a human only when a human is needed.
For the monolith nobody dares touch. We map it, cover it with tests, and peel off the riskiest modules one strangler-fig slice at a time.
Not sure which card fits? Send the symptoms → and we will match them to a card within 4 hours.
Note 01
A 45-minute call where we pin down the constraints, the load profile, and the definition of done.
Day 1
Note 02
Endpoint sketches, schema drafts, and sequence diagrams you approve before a line of code exists.
Day 2–3
Note 03
Weekly demo builds on a live URL, with tests and load checks running on every merge.
Week 1–2
Note 04
Repo, runbook, dashboards, and a recorded walkthrough — then 30 days of patch cover.
Final 2 days
Describe the bottleneck, the stack, and the deadline. You get an architecture read, a fixed price, and a delivery window — no retainer talk required.
[email protected] · +33 663 833 147 · 31 boulevard Beauséjour, 75016 Paris