Lead developer, Sylius architect and founder: fifteen years of real-world systems.
From SFR to Edenred, through Vallourec and Capgemini — a coherent technical trajectory that underpins Keyson's practice.
Moustakime Kifia
I started my career automating network equipment monitoring at SFR, before progressing toward increasingly complex architectures in energy, telecoms, finance and heavy industry. Fifteen years of real projects — not just theory.
My specialty crystallized around Symfony and Sylius: I designed and delivered a B2B e-commerce platform at Vallourec (world leader in industrial tubes) and currently coordinate the redesign of a Sylius platform at Edenred with a NestJS BFF and a Next.js frontend.
Keyson extends this practice: defensible architecture, readable code, AI tooling integrated into the daily workflow (Claude Code, GitHub Copilot / Codex) and direct collaboration with your teams. First conversations happen with me — no intermediary.
~15
Years of experience
Energy, e-commerce, insurance, telco
Sectors
SAA-C03
AWS certified
MEng Sorbonne
Education
Career timeline
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Founder & CTO
2021 — present
Keyson
Independent software studio and SaaS publisher. Staff augmentation missions sourced via Malt, Sensiolabs and Exalt for enterprise clients. Direct involvement in architecture, delivery and product work.
Founded Keyson: independent software studio and SaaS publisher. Staff augmentation at Vallourec, Groupama and Edenred. Publisher of Cercly, a SaaS platform for association management, and Workshops, a free workshops platform.
- Structured an offer centered on defensible architecture, readable delivery and direct client collaboration — no intermediary.
- Staff augmentation engagements at enterprise clients: B2B industrial e-commerce (Vallourec), insurance (Groupama), B2B/B2C/B2E e-commerce (Edenred).
- Published Cercly: multi-tenant SaaS platform for associations — members, memberships, Stripe payments, React Native/Expo mobile app, hosted on AWS.
- Published Workshops: SaaS platform connecting professional speakers with people looking to grow their skills through free workshops.
Core stack
Symfony, Sylius, API Platform 4, NestJS, Next.js, Payload CMS, React Native (Expo), AWS, Docker, Terraform, GitLab CI/CD, Stripe Connect, RabbitMQ
Architecture Delivery SaaS product Sylius AWSMission details Open
- Built and structured the company offer across consulting, architecture and direct delivery support (missions sourced via Malt, Sensiolabs and Exalt).
- Staff augmentation engagements at enterprise clients: Vallourec (B2B industrial e-commerce, 3 years), Groupama (insurance, 6 months), Edenred (B2B/B2C/B2E e-commerce, ongoing).
- Published and operated Cercly: multi-tenant SaaS platform for association management (members, memberships, events, Stripe Connect payments, React Native/Expo mobile app, multi-tenant AWS infrastructure) — API Platform 4.
- Published Workshops: SaaS platform for free workshops (topic proposals and community interest voting, multi-speaker scheduling, registrations, automated reminders and replays) — Next.js, Payload CMS, RabbitMQ.
- AI tooling integrated into the daily development workflow (Claude Code, GitHub Copilot / Codex) to accelerate delivery without compromising code quality.
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Senior Developer Sylius · Nest · Next
June 2025 — present
Edenred · Paris
E-commerce platform redesign across B2B, B2C and B2E flows with a 9-service microservice architecture (products, orders, beneficiaries, notifications, e-tickets, subsidies, gift vouchers…), Sylius 1.14 at the core, a NestJS BFF and an NX / Next.js 15 frontend monorepo.
Large-scale e-commerce platform redesign: 9-microservice architecture centered on Sylius 1.14, NestJS BFF, NX / Next.js 15 monorepo. Akeneo integration, product synchronization, −70% on CI/CD validation times.
- Stabilized Sylius 1.14 and reworked product flows between Akeneo and the platform — fixed critical catalog synchronization issues.
- Clarified contracts across 9 microservices, the NestJS BFF and the frontend to reduce cross-team ambiguity.
- Reduced CI validation time by 70% through Behat optimization and parallelization.
Core stack
Sylius 1.14, Symfony 6.4/7.4, PHP 8.3, API Platform 3/4, NestJS, Next.js 15, React 18, TypeScript, PostgreSQL, Kafka, RabbitMQ, Redis, OpenSearch, AWS (S3, SQS, ECS), Akeneo, Typesense, OpenTelemetry, Unleash, NX (monorepo), Storybook 8, Cypress/Cucumber, Playwright, Jest
Sylius NestJS Next.js 15 Akeneo DDD CQS Kafka OpenSearch OpenTelemetry AWSMission details Open
- Build and run of a B2B, B2C and B2E e-commerce platform with 9 microservices (products, orders, beneficiaries, notifications, e-tickets, subsidies, gift vouchers…) — multi-tenant, event-driven via Kafka.
- Strengthened Sylius 1.14 architecture: Akeneo ↔ Sylius product flows, beneficiary ↔ customer relationships, critical catalog synchronization fixes and taxonomy restructuring.
- Integrated and optimized Behat in CI/CD, reducing validation time by 70%.
- Contributed to the NX monorepo (Next.js 15, React 18) and NestJS BFF: API contracts, data model consistency and cross-team alignment.
- Set up full-stack observability with OpenTelemetry (traces, metrics, logs) and integrated Unleash feature flags.
- Contributed to architecture decisions around Clean Architecture, DDD and CQS.
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Senior Full Stack Developer
Dec. 2024 — May 2025
Groupama · Puteaux
Insurance quote generation application with rich business logic, real-time UI updates and backend API orchestration.
Insurance quote generation application for Auto & Home products. Symfony UX Live Components, Java Spring API consumption, OpenShift deployment.
- Built a reactive business-oriented UI with Symfony UX Live Components.
- Made Java Spring API exchanges more reliable through explicit DTO-based contracts.
- Contributed to GitLab CI / OpenShift delivery and supported junior developers.
Core stack
Symfony, Symfony UX Live Components, Stimulus.js, TailwindCSS, Java Spring APIs, OpenShift
Symfony UX Stimulus.js TailwindCSS OpenShift GitLab CIMission details Open
- Built an insurance quote generation application for Auto and Home products.
- Developed the UI with Symfony UX Live Components, Stimulus.js and TailwindCSS for a more reactive experience.
- Integrated Java Spring REST APIs with DTO-based contracts to keep data exchanges consistent.
- Designed dynamic components for input flows, business rules and real-time offer rendering.
- Contributed to GitLab CI pipelines and OpenShift deployments.
- Mentored junior developers and worked closely with product and backend teams.
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Senior Full Stack Developer
May 2021 — Aug. 2024
Vallourec · Meudon
B2B e-commerce platform Smartengo™ for Vallourec — world leader in industrial tubes. Online sales of 1,000+ product references from all Vallourec product lines worldwide, with real-time stock access and market pricing. In a sector where standard lead times run 6 to 12 months, immediate stock availability is a direct competitive advantage.
Design and delivery of Smartengo™, Vallourec's B2B e-commerce platform. 1,000+ product references available online with real-time stock and market pricing. Sylius + Angular architecture, API Platform, AWS/Terraform infrastructure.
- Delivered Smartengo™: 1,000+ Vallourec product references online with real-time stock and market pricing — in a sector where standard lead times are 6 to 12 months.
- Acted as backend reference for 3 years: code review, refactoring, pair programming and team development.
- Industrialized the production delivery chain with GitLab CI, AWS and Terraform.
Core stack
Symfony 5.4/6.4, PHP 8.2, Sylius 1.10, API Platform 2.5, Angular 10/15, AWS, Terraform, Docker, GitLab CI, PostgreSQL, MySQL, MongoDB, Behat, PHPUnit, Jest
Sylius Symfony Angular API Platform AWS Terraform DockerMission details Open
- Designed and delivered Smartengo™: Vallourec's B2B e-commerce platform — 1,000+ product references from all group product lines available online with real-time stock and market pricing.
- "On-demand" system for off-catalogue products: customers can submit specific requests directly through the platform.
- Implemented a Sylius + Angular architecture with Symfony backend services and API Platform REST APIs.
- Customized the back office with EasyAdminBundle and Twig for industry-specific operational workflows.
- Acted as backend reference for 3 years: code review, refactoring, pair programming and team upskilling.
- Handled production deployments with GitLab CI, AWS and Terraform.
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Lead Full Stack Developer
Nov. 2017 — Apr. 2021
iKNSA · Paris
Software agency delivering staff augmentation and fixed-scope engagements for mid-market clients. Multi-product, multi-client environment with on-premise constraints, Docker Swarm orchestration and daily team coordination.
Application architecture of a Docker Swarm cluster (9 services), on-premise GitLab CI/CD deployment, team leadership for 4 developers and 2 system administrators.
- Delivered a 9-service Docker Swarm cluster with HAProxy as entry point.
- Set up an on-premise DevOps environment and GitLab CI/CD chain.
- Provided technical leadership to a mixed development and system team.
Core stack
Symfony, API Platform, NestJS, Angular, Ionic, Docker Swarm, GitLab CI/CD, AWS, RabbitMQ
Symfony Angular NestJS Docker Swarm GitLab CI AWS TDDMission details Open
- Designed the application architecture and delivered a Docker Swarm cluster with 9 apps and services behind HAProxy.
- Set up an on-premise DevOps environment with Docker and GitLab CI/CD.
- Built Symfony API Platform backend services and Angular, Ionic and design-system frontends.
- Led 4 developers and supported 2 system administrators.
- Drove Symfony and Angular upgrades and helped business teams shape user stories and test scenarios.
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Software Engineer
Jan. 2016 — Nov. 2017
Capgemini · Paris
Business applications for public-sector organizations, in a more traditional information-system and controlled delivery setup.
Business applications for public administrations. AngularJS interfaces, Symfony APIs, Jenkins CI/CD pipelines.
- Built and maintained business applications in a production-oriented context.
- Added unit tests and Jenkins pipelines to make deployments more reliable.
- Worked across AngularJS interfaces and Symfony APIs with enterprise integrations.
Core stack
AngularJS, Symfony 2.8, PHP, PostgreSQL, Jenkins, Docker, Vagrant
Symfony AngularJS PHP Jenkins PostgreSQLMission details Open
- Built and maintained business applications for public-sector organizations.
- Implemented AngularJS interfaces and Symfony backend APIs.
- Added unit testing and Jenkins pipelines to make deployments more reliable.
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Developer — early career
2011 — 2015
SFR & ALFA DIMAG (CCE SNCF)
SFR (2011–2013, work-study alongside the Sorbonne Master's): ADSL/FTTH network monitoring automation. Then ALFA DIMAG for CCE SNCF (2013–2015): HR application development with REST/SOAP services.
Work-study at SFR: ADSL/FTTH network monitoring automation. ALFA DIMAG / CCE SNCF: HR management application development with REST/SOAP services and DB2.
- Automated ADSL and FTTH equipment monitoring to improve incident detection (SFR, work-study).
- Developed HR applications and internal PHP/jQuery tools to streamline operational processes (ALFA DIMAG).
- Early hands-on exposure to network operations, monitoring and mission-critical business applications.
Core stack
PHP, jQuery, Perl, MySQL, SOAP, DB2, TCP/IP, Telnet, RedHat
PHP Symfony jQuery Perl MySQL SOAPMission details Open
- At SFR (work-study, 2011–2013): automated monitoring of ADSL and FTTH network equipment to improve incident detection.
- Tracked mobile network link quality and supported technical project execution.
- Built internal PHP and jQuery tools for operational processes.
- At ALFA DIMAG / CCE SNCF (2013–2015): developed and maintained HR applications, DB2 queries and REST/SOAP services.
Stack & expertise
A practice built on real projects — PHP, distributed architecture, AWS-certified cloud, AI applied daily.
Backend & domain
- Symfony 6.4/7.4, PHP 8+
- Sylius 1.14 (B2B/B2C/B2E e-commerce)
- API Platform 3/4, NestJS
- DDD, CQS, Clean Architecture
- Hexagonal architecture, microservices
- Kafka, RabbitMQ, Redis, OpenSearch
Frontend & interfaces
- Next.js 15 / React 18 (NX monorepo)
- Angular
- Symfony UX / Stimulus.js
- TailwindCSS, Twig
- Storybook 8, Akeneo (PIM)
Cloud & DevOps
- AWS certified SAA-C03 (EC2, RDS, S3, ECS, SQS)
- Docker, Kubernetes, OpenShift
- GitLab CI/CD, Terraform, ArgoCD
- OpenTelemetry, Grafana, SonarQube
- Unleash (feature flags)
Quality & leadership
- TDD / BDD, Behat, PHPUnit
- Jest, Cypress/Cucumber, Playwright
- Code review, Pair Programming
- Team mentoring
- Architecture Decision Records (ADR)
- AI daily workflow: Claude Code, GitHub Copilot / Codex
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Master of Engineering — Software Engineering
2011 — 2013
Sorbonne Université · Paris
- French Native
- English Professional
- AWS Certified Cloud Practitioner
- AWS Certified Solutions Architect – Associate (SAA-C03)
- ITIL® Foundation Certificate in IT Service Management
A technical topic, a trajectory to structure?
First contacts reach me directly. No intermediary, reply within two business days.