Senior web consulting · Paris and remote
Secure, high-performance web platforms for transformation teams
Tech leadership, Next.js, React and Node.js, from assessment to deployment, backed by 16 years of experience.
Clients who trust me
I work directly with product and business teams, from consulting through technical delivery.
Connected TV advertising
AI-powered local visibility
Legal information
Engineering consultancy
Patient experience
Cloud and cybersecurity
Workspaces
Client outcomes
Case studies
Hands-on engagements, from architecture through production.
Client case study · SaaS · AI-assisted delivery
A delivery pipeline for building Revally with AI
How three founders use Next.js 16, GitHub Actions, Docker and Coolify previews to review and test every AI-assisted change.
Client case study · AdTech · Public API
Versioning Vibe’s API without duplicating the product
How isolated revisions and chained TypeScript adapters let partners migrate on their own schedule without duplicating the business logic.
Client case study · Hospitalidée · Digital health
Connecting Hospitalidée to Pro Santé Connect with RPPS account matching
How Hospitalidée delegated identity verification to PSC, kept its existing accounts and validated CPS smart card and e-CPS sign-in.
A clear method from first conversation to production
- 1
Frame
Objectives, context, constraints and risks.
- 2
Prioritise
A concrete action plan and early results.
- 3
Deliver
Short cycles, demos and shared decisions.
- 4
Hand over
Documentation and autonomy for your team.
Your point of contact
One senior consultant, personally involved from discovery to production
Byrds Consulting is Théo Lubert’s consulting practice. As a TypeScript/Next.js Tech Lead and developer, I am your single point of contact and stay personally involved in both decisions and delivery.
- Hands-on Tech Lead and developer
- 16 years of experience
- TypeScript / Next.js specialist
- Performance and Developer Experience
Trusted by
Recommendations
What clients and collaborators say about working with me.
- Loïc Raynal
HOSPITALIDEE
“Excellente prestation de Théo, depuis les conseils en amont du projet jusqu'à la livraison, la communication est fluide et techniquement c'est robuste.”
- Loïc Huvé
Lead dev front-end · Onefirst
“Théo est capable de gérer une équipe de développeurs, de mettre en place ainsi que de maintenir une stack technique fullstack. Il pratique de la veille pour s'assurer d'utiliser des technologies pertinentes et adaptées à chaque projet. Il sait mettre en application avec aisance ses compétences de tech lead que ce soit en interne ou face à un client.”
- William Blanchard
Directeur Agence · Scalian
“Théo est un expert réactif et polyvalent. Il attrape les sujets à bras-le-corps pour les faire avancer, tout en embarquant et en transmettant son savoir aux équipes.”
Engagement models matched to uncertainty
Focused audit, fixed-scope discovery or time-based support: the format is selected after a first conversation, based on risk and expected outcomes.
Focused audit
3 to 5 days
Surface causes, risks and the highest-priority actions.
- Interviews and technical analysis
- Decision-ready readout
- Prioritised backlog
Discovery & prototype
2 to 4 weeks
Validate an architecture and first journey before committing to delivery.
- Target architecture
- Working prototype
- Delivery plan
Senior support
Flexible cadence
Strengthen your team’s delivery and decisions over time.
- Tech leadership or development
- Weekly progress review
- Documentation and knowledge transfer
Senior support where your project is stuck
Scoped engagements with explicit deliverables and continuous knowledge transfer.
Tech Lead / CTO
A fractional Tech Lead surfaces blocked decisions, matches review depth to risk and builds ownership across the team.
A realistic roadmap, explicit trade-offs and fewer decisions waiting on one person.
Next.js migration
A route-by-route migration that delivers crawlable HTML and reliable metadata, then measures whether the App Router and Server Components reduce client-side JavaScript.
Each migrated public route ships server-rendered content and keeps a rollback rule to the SPA in the reverse proxy.
Performance audit
An audit that segments field Core Web Vitals, reproduces a user journey and verifies where browser or server time is spent.
Testable hypotheses, a prioritised backlog and a repeatable diagnostic method.
TypeScript and AI
Strict types, runtime schemas and agent-readable CI feedback for verifying AI-assisted code.
A short loop from generation through type checking, tests and review, with a human retaining final merge approval.
Frequently asked questions
What assignments do you take on?
Fractional technical leadership, Next.js migration, performance and TypeScript architecture, from assessment to production.
Can you work with an existing team?
Yes. The goal is to accelerate the existing team, clarify decisions and transfer practices without creating long-term dependency.
How does an engagement start?
A 30-minute call qualifies the context. You then receive a proposal covering scope, pace, deliverables and budget.
Do you work remotely?
Yes, remotely across Europe and occasionally on site in Paris when the engagement requires it.
Is a technical issue slowing down your roadmap?
Share the context, constraints and deadline. I will respond with an initial assessment and the most useful next step.
Schedule a 30-minute call