Emmanuel BALLERY
Software Architect & Tech Lead, Symfony / API Platform
Engineering degree in Cognitive Engineering (ENSC – Bordeaux INP) · 15+ years in web engineering
Senior engineer specializing in web development and software architecture. 15 years designing complex, high-volume business applications (SaaS, ERP, PIM) for major luxury and retail brands (LVMH, Lacoste, Le Coq Sportif) — contractual 99% SLA, catalogs of thousands of products, over 1M data points validated daily. Full-stack across backend, frontend and operations, with a strong DevOps and security mindset (former DGSE). I care about clean, maintainable code and about mentoring teams so they ship faster and more reliably.
Open to a permanent engineering leadership or software architect position; I still take on freelance work through x10. Based in Metz, France: on-site or hybrid in Metz or Luxembourg, hybrid in Paris, or fully remote.
Experience
Senior Full-Stack Engineer · Tech Lead
Mevia — Alumnforce (Paris) — Alumnforce, a SaaS platform for alumni network management used by 350 institutions. Fully remote (based in Metz), in a role I chose for its hands-on technical impact: one of four senior engineers on the technical leadership group, which shares technical governance in place of a single CTO.
- Shape the technical direction of the Alumnforce platform (architecture, scalability, security).
- Set engineering standards for CI/CD, testing, code quality and observability.
- Applied AI: built, in one month, an AI plugin integrated with Jira, Jenkins and GitLab that works through tickets, keeps the product team in the loop and opens merge-ready MRs; every PR is now AI-assisted.
- Go-to Symfony expert across teams; mentor developers.
Stack · PHP, Symfony, CI/CD, AI.
CTPO
Sinfin — SaaS PIM/DAM/CMS/OMS company — High-volume SaaS company serving major retail brands.
- Clients: high-availability platforms for LVMH, Lacoste, Le Coq Sportif, ESTAC and others — contractual 99% SLA, catalogs of thousands of products.
- Architecture: migrated the platform to Symfony in 4 months, one client at a time, with zero downtime; tuned performance on very large databases; cut AWS costs by over 70%.
- Technical leadership: trained and upskilled about ten junior developers; enforced coding standards, code review on every change and pair programming.
- DevOps: CI/CD (GitLab CI) on every MR and production tag — lead time cut from several weeks to under 24 hours, sub-minute deploys, 300+ deployments in 2 years.
Stack · PHP, Symfony, API Platform, React, Redis, Docker, AWS.
Co-founder & CTO
Timcity — Built a real-estate ERP SaaS from scratch: onboarded a property developer's 26 project companies (full accounting and construction tracking) within a few months.
- Greenfield design: full ownership of architecture and technology choices; secure REST API and a reactive SPA frontend.
- Developer Experience (DX): fast Docker-based local environment and QA tooling (linting, PHPUnit unit tests).
- Product engineering: turned business needs into scalable technical solutions, including complex features such as accounting, document management, e-signature and invoicing.
Stack · Symfony, Vue.js, MySQL, GitHub Actions.
Senior Web Architect & Consultant
Independent practice — Full-time independent consultant: technical consulting, audits and complex development for enterprise and small-business clients. Ran the business as well as the engineering.
- Enterprise and research (Orange, repeat client since 2015; CNRS): consulting and development on technically demanding projects; performance audits and tuning of existing systems.
- Healthcare and industry (Moria, URGO, through Apperture): business-critical applications for the medical and surgical sector, under strict regulatory requirements; digitized industrial processes.
- French hunting federation: modernized the federation's management tools and processed large volumes of member data.
- Real-estate ERP (PROJIM): custom tools for property developers (construction tracking, financial management).
- Teaching (HITEMA, 3 years, 4 cohorts): taught modern web architectures, best practices and DevOps.
Full Stack Web Engineer / R&D
DGSE — Tech lead for a team of about ten, designing and building data-analysis tools in a classified environment.
- Security and robustness: built software under strict security requirements (OWASP, encryption).
- Standardization: coding conventions and shared internal libraries across the department's projects.
Full Stack Web Engineer
Domicalis — e-health SaaS company (hospital at home) — Designed the core of a SaaS platform to coordinate care for hospital-at-home patients.
- Architecture & product (CTPO role): designed the platform core, integrated heterogeneous data feeds (connected medical devices), safeguarded patient-data integrity and turned clinical needs into specifications and a usable UX.
- Management: day-to-day lead of a 10-person team; owned development processes and quality.