Custom platforms, SaaS products and mobile applications engineered for ambitious businesses. Retainers from €800/mo. Fixed-price from €3,000.
From first line of code to running product — we own the full stack.
Complex SPAs, server-rendered platforms, real-time systems. React, Next.js 15, TypeScript — built for performance from day one. We don't ship anything with a Lighthouse score under 90.
Native-quality iOS & Android apps with React Native. Native modules where performance demands it. One codebase, zero compromises.
02Multi-tenant architectures, Stripe billing, RBAC, real-time collaboration. We've shipped SaaS products that scale from 100 to 100,000 users without a rewrite.
03REST, GraphQL, webhooks, real-time pipelines. We've integrated with 60+ third-party services and built APIs that handle 10M+ monthly requests.
04Business process automation, AI-assisted workflows, intelligent document processing. We build systems that save teams hundreds of hours per month.
05Ongoing retainer support, performance monitoring, security audits, dependency management. Your product stays fast, secure and up to date.
06Clear scopes. No hidden costs. We work with fixed-price projects and monthly retainers — choose what fits your stage.
Prefer a defined scope and fixed deadline? We quote fixed-price projects starting at €3,000 for landing pages and small tools, and €8,000+ for full MVP builds and custom platforms. Free discovery call included.
Each engagement is a long-term relationship — not a handoff.
Multi-tenant treasury management for SMEs. Real-time cash flow forecasting, automated reconciliation, AI-generated insights. Handles €40M+ in monthly transactions across 3 countries.
Construction management for 85 active sites. Field-to-office coordination, real-time progress and compliance tracking.
End-to-end scheduling for 18 clinics. HIPAA-compliant, replaces a 12-year-old legacy system. 94% appointment show rate.
We challenge specs, not just implement them. Every decision is business-driven. We ask "why" before "how."
No legacy spaghetti. Modular, observable, testable systems that grow with your business. Your codebase is a competitive advantage.
Weekly demos, async updates, full project board access. You know exactly what's happening — always.
We don't disappear after launch. Quarterly reviews, ongoing improvement cycles. Your product compounds in value.
Every build targets Lighthouse 95+. Core Web Vitals aren't a nice-to-have — fast products convert better.
A battle-tested process. No guesswork, no surprises.
Business goals, technical audit, competitive landscape. The output is a shared roadmap — not a quote.
Architecture, tech stack, sprint map, risk matrix. Everything scoped before a single line is written.
UX flows, component systems, high-fidelity prototypes. We design in code — no handoff friction.
Two-week sprints, CI/CD, weekly demos. You see working software every Friday.
Staged rollout, monitoring, runbook. On-call for 30 days post-launch.
Quarterly reviews, roadmapping, continuous improvement. Your product never stops compounding.
"YIMBRIC didn't just build our platform — they redesigned how we think about our product. The architecture they proposed saved us from a complete rewrite 18 months later."
"Emily and the team delivered exactly what they promised, on time, within budget. Weekly demos gave us full visibility. I've worked with 6 agencies — this was a different category."
"Perfect Lighthouse scores from day one. Competitors spent months optimising what YIMBRIC shipped correctly from the start. That's the difference between engineers and coders."
* Example testimonials for illustration purposes
Most projects start with a 30-minute call. No pitch deck, no NDA.
Last updated: June 10, 2025 · YIMBRIC SAS · SIREN 105 427 538
YIMBRIC SAS ("YIMBRIC", "we", "us") is a software engineering company registered in France. Registered office: 78 Rue Sully, 69006 Lyon, France. SIREN: 105 427 538. APE: 6201Z.
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Under GDPR, you have the right to:
To exercise any right, email yimbric@inbox.eu. We respond within 30 days. You may also lodge a complaint with the CNIL (Commission Nationale de l'Informatique et des Libertés): www.cnil.fr.
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For any data protection enquiry: yimbric@inbox.eu · +33 6 05 61 30 58 · 78 Rue Sully, 69006 Lyon, France.
Last updated: June 10, 2025 · YIMBRIC SAS · SIREN 105 427 538
These Terms of Service ("Terms") govern the relationship between YIMBRIC SAS ("YIMBRIC", "we"), a French simplified joint-stock company registered at 78 Rue Sully, 69006 Lyon, France, SIREN 105 427 538, and any business or individual ("Client") engaging YIMBRIC for software development services.
By signing a Statement of Work or Project Agreement, or by making payment for YIMBRIC services, the Client agrees to these Terms.
YIMBRIC provides custom software engineering services including web application development, mobile application development, SaaS platform development, API integrations, business automation and software maintenance. The specific deliverables, timelines and fees for each engagement are defined in a separate Statement of Work (SOW) or Project Agreement.
Retainer engagements are invoiced monthly in advance. Payment is due within 14 days of invoice date.
Fixed-price projects follow the payment schedule defined in the relevant SOW, typically: 40% on project start, 30% at mid-point milestone, 30% on delivery. Fixed-price projects start at €3,000.
All prices are in euros (EUR) and exclude French VAT (TVA) at 20%, which will be added to invoices where applicable.
Late payments accrue interest at 3× the European Central Bank rate plus 10%, as per French commercial law (L.441-10 of the Commercial Code). A flat-rate recovery fee of €40 is applied per late invoice.
We process payments via Stripe. By providing payment details, you agree to Stripe's Terms of Service.
Upon receipt of full and final payment, YIMBRIC assigns to the Client all intellectual property rights in the custom deliverables created specifically for that project, excluding:
Until full payment is received, YIMBRIC retains all rights to deliverables. The Client receives a limited licence to use deliverables for testing purposes during development.
YIMBRIC retains the right to reference the project in its portfolio and marketing materials unless the Client requests confidentiality in writing.
Both parties agree to keep confidential all non-public information received from the other party in connection with the engagement. This obligation survives termination by 3 years. Confidential information does not include information that becomes publicly known through no breach of this agreement, or information independently developed by the receiving party.
The Client agrees to:
Delays caused by the Client's failure to fulfil these responsibilities may result in timeline adjustments or additional fees.
YIMBRIC warrants that services will be performed with reasonable skill and care, and that deliverables will substantially conform to agreed specifications for 90 days after delivery.
To the maximum extent permitted by applicable law, YIMBRIC's total liability to the Client for any claim shall not exceed the total fees paid by the Client in the 3 months preceding the event giving rise to the claim.
YIMBRIC is not liable for: indirect or consequential losses, loss of profits, loss of data, loss of business or reputational damage, or failures caused by third-party services (hosting, APIs, infrastructure).
Retainer agreements may be terminated by either party with 30 days' written notice. Fees are due for the full notice period.
Fixed-price projects may be terminated by the Client with payment of all work completed to date plus a cancellation fee of 20% of the remaining project value.
YIMBRIC may terminate immediately if the Client fails to pay an overdue invoice within 30 days of notice, or engages in conduct that is unlawful, abusive or harmful.
Upon termination, YIMBRIC will deliver all completed work to date. Sections on IP, confidentiality and payment obligations survive termination.
These Terms are governed by French law. The parties agree to attempt resolution of any dispute through good-faith negotiation within 30 days. If unresolved, disputes shall be submitted to the exclusive jurisdiction of the Commercial Court of Lyon (Tribunal de Commerce de Lyon).
We may update these Terms. We will notify active Clients by email at least 30 days before changes take effect. Continued use of our services after that date constitutes acceptance.
For any contractual enquiry: yimbric@inbox.eu · +33 6 05 61 30 58 · 78 Rue Sully, 69006 Lyon, France.
Mentions légales — required under French law (LCEN of June 21, 2004)
Company name: YIMBRIC SAS
Legal form: Société par Actions Simplifiée (SAS)
Registered office: 78 Rue Sully, 69006 Lyon, France
SIREN: 105 427 538
APE / NAF code: 6201Z (Computer programming activities)
VAT number: FR [VAT number to be confirmed]
Capital social: [To be confirmed]
Registered with: RCS Lyon
Founder and Director: Emily Solito
Email: yimbric@inbox.eu
Phone: +33 6 05 61 30 58
Address: 78 Rue Sully, 69006 Lyon, France
This website is hosted by Vercel, Inc., 340 Pine Street, Suite 701, San Francisco, CA 94104, USA.
Website: vercel.com
All content on this website — including text, graphics, logos and code — is the exclusive property of YIMBRIC SAS or its licensors and is protected by French and international copyright law. Reproduction, in whole or in part, without prior written permission is strictly prohibited.
This website and its content are governed by French law. Any dispute relating to the use of this website shall be subject to the exclusive jurisdiction of the courts of Lyon, France.
YIMBRIC is not responsible for the content of external websites linked from this site. The inclusion of a link does not imply endorsement.
For information on how we process personal data, see our Privacy Policy.
In accordance with Law No. 78-17 of January 6, 1978 (Loi Informatique et Libertés) as amended, and EU Regulation 2016/679 (GDPR), you may exercise your rights by contacting yimbric@inbox.eu. Complaints may be lodged with the CNIL: www.cnil.fr.