Available for new projects
Data pipelines, AI automation, dashboards, websites and apps — engineered end-to-end, by one person who ships.
64,602
records cleaned by AI for $5.51
253,000
alt texts generated
4 days
from brief to a live sales pipeline
270
industrial sites enriched, site by site
They trusted me with their systems
What I build
No agency, no subcontracting, no coordination overhead. You talk to the person writing the code.
Scraping, cleaning, deduplication, enrichment, syncing. From raw source to data you can actually use.
How
The API when there is one, a driven browser when there isn't. Queued jobs, retry after failure, fingerprint deduplication: running it twice never creates a duplicate.
n8n, autonomous agents, LLMs in production. Repetitive work disappears from the calendar.
How
n8n for orchestration, and the model called with a structured output — an enforced format, not free text to guess at. Every step is logged, every failure replayable on its own.
An interface built to operate a system, not to admire it.
How
Aggregates computed in the database, not in the browser: the page stays fast across years of history. Access rights enforced at database level, refresh without a page reload.
Next.js, TypeScript, from design to deployment.
How
Next.js 16, server components by default, fonts and images served from your own domain. Core Web Vitals measured before launch, not discovered after.
Cross-platform, wired into the systems you already run.
How
One codebase for iOS, Android and the desktop. Offline-capable with a sync queue: the user enters data, the app sends it when the network comes back.
Qualification, support, lead capture. The one on this page is one of them.
How
A deterministic qualification script first, the model as a fallback when the question falls outside it. Streamed answers, every conversation stored, and one hard rule: never invent a price or a deadline.
Catalogues, payments, stock and back-office syncing.
How
Payments delegated to a certified provider — no card data ever passes through your systems. Stock synced by webhooks with your back-office, product pages server-rendered so they stay indexable.
Interfaces and visual identity that match the product.
How
A token system rather than isolated mockups: colours, scales and spacing defined once, applied everywhere. Contrast checked, motion switched off when the visitor asks for it.
Selected work
For each project: the problem, the architecture, the stack, and what it produced.
Executive control center
A French manufacturer of large-format LED displays turning over €4.5M was running the business from several Excel workbooks updated by hand.
Maxime · French industrial group
6
modules: cockpit, sales, finance, property, operations, AI
8
PostgreSQL tables protected by Row Level Security
233
elements contrast-audited, WCAG AA reached
Jean · AfricartMarket
50,00064,602Read the case studyMaxime · French industrial group
4 days100%Read the case studyMatys Nsir · Bastide Confort Médical
08amRead the case studyTalentScout AI
10×−80%Read the case studyMouna Baatout · Moon Mobility
15.0Read the case studyB&C Enterprise
270siteRead the case studyFlowAudit AI
182h30sRead the case studyLeadScout AI
100%autoRead the case studyDarkosClaw
25€0Read the case studyHow I work
The same sequence on every project, from a 200-line script to a full platform.
01
You describe the problem. I ask the questions nobody asks — the ones that reveal the real problem is somewhere else. Reply within 24 to 48 hours.
02
System diagram, stack decisions, failure points identified. Before the first line of code. You sign off on a plan, not a promise.
03
Delivered in visible increments. You watch the system run on your own data long before it's finished. No black box.
04
Documentation, access, walkthrough. You're independent. The code is yours, with no hidden dependency on me.
05
Optional. Monitoring, fixes, evolutions. Some clients never needed it — that's the point.
Technical stack
The same building blocks used by companies processing millions of events a day.
Oussama Abassi
About
I'm Oussama Abassi, a freelance engineer based in Paris, working across Europe: industrial SMEs, consumer platforms, independents, startups. The size and the sector change, the starting point never does — someone shows me a process eating their week, and I turn it into a system that runs on its own.
Working with me means one point of contact, no project-management layer, and the person designing the architecture is the person writing the code and answering your messages. On a four-day project as much as a three-month one.
What interests me are systems that don't break the moment I stop watching them.
Start a projectVerified reviews
Every review links back to its public source on Upwork or Malt.
« Osama guided us, advised us and met our needs with great efficiency. Thank you again! »
« I brought Oussama in to automate part of our internal processes. He delivered quickly, the result was clean and it has been running without a hitch since. No need to explain what we wanted twice — he gets it fast and proposes concrete solutions. I recommend him. »
« Oussama did excellent work on my automation project. He was very responsive, professional and effective from start to finish. He quickly understood the requirement, delivered a working solution and was always available to make necessary adjustments. Communication was smooth throughout the project. I'm very satisfied with this collaboration and would work with him again without hesitation. »
« I had the chance to work with this engineer and can only recommend him 100%. He's an exceptional person — attentive, committed and extremely professional. He quickly understands business and technical challenges, asks the right questions and proposes relevant, structured solutions. He doesn't just execute: he thinks, optimizes and brings real added value. A rare profile — technically sharp and results-oriented. »
« I had the opportunity to work with Oussama on automation projects and strongly recommend him. He has perfect command of n8n and was able to transform complex manual processes into smooth, efficient workflows. Oussama is not only technical — he also has a genuine business vision to save time. A reliable and highly responsive expert. »
« Perfect! »
« Excellent »
Frequently asked
Honest answers, including the ones that don't flatter me.
Yes. One point of contact, no project-management layer, and the person designing the architecture is the person writing the code and answering your messages. On very large projects I can bring in trusted partners, but you keep a single point of contact: me.
It depends entirely on scope, and I won't quote a number before I understand it. For a sense of scale: an autonomous sales pipeline shipped in 4 days, a large-scale data project ran across two months. After our first conversation you get a reasoned estimate — not a figure pulled out of the air.
Fixed price on a defined scope, or time-based on longer engagements. A deposit is required to start. Budget is discussed once the need is framed: I'd rather quote fairly after understanding the problem than publish a rate card that fits nobody.
You get the documentation, the operations runbook and full access to the code — you're independent, with no hidden dependency on me. A maintenance contract is available but optional. Some clients have never needed one, and that's exactly what I aim for when building.
NDA signed on request, before any detail is exchanged. API keys stay server-side, never in the browser. On a recent project the client's IT lead required strictly read-only banking access: the scope was honoured to the letter, no write route exists in the codebase.
Both. A good share of my work is picking up infrastructure already in place, fixing its blind spots and making it operable. Taking over existing code often demands more rigour than starting from scratch.
Start a project
I read every message myself and reply within 24 hours. No automated quote, no form disappearing into a void.
Assistant · live demo
The assistant at the bottom right of your screen is an example of what I build. It qualifies, it records, it never sleeps.