What we've shipped and what stuck.
Short, structured case studies · problem, solution, outcome. Client names may be withheld, but the numbers are real.
- 01 / 17Industry · fintech · 9 weeks
AI support copilot for an EU neobank · 42% cost drop, 18% CSAT lift
A fast-growing EU neobank's support team was drowning in Tier-1 tickets. We built a retrieval-augmented copilot with strict guardrails, live traffic in week four, metered against real CSAT.
Read more - 02 / 17Industry · saas · 14 weeks
From single-tenant to multi-tenant SaaS in 14 weeks
A 40-tenant B2B SaaS hit the ceiling of its single-tenant architecture. We migrated to Postgres RLS, custom domains, and metered Stripe billing · with zero downtime.
Read more - 03 / 17Industry · ecommerce · 3 weeks
Core Web Vitals rescue: LCP 4.5s → 0.9s, organic +34%
A DTC brand's Next.js + Shopify storefront was losing rank to competitors purely on speed. Three weeks, five targeted changes, traffic back on track.
Read more - 04 / 17Industry · saas · 5 weeks
Consumer self-improvement app · App Store + Play Store in 5 weeks
Zero-to-shipped iOS + Android for a self-improvement startup. Daily-challenge engine, TikTok-style short video feed, expert article library. 5 weeks from first design to App Store review pass.
Read more - 05 / 17Industry · fintech · 3 weeks
DeFi lending protocol audit · 7 critical findings before mainnet
Pre-mainnet audit of a lending protocol on Ethereum L2. Invariant-based + fuzz + manual review. 7 critical, 12 high, 28 medium findings · all fixed before first tx.
Read more - 06 / 17Industry · fintech · 6 weeks
KYC + payments re-integration for a HU fintech · MNB audit clean, 72% onboarding-time drop
A Hungarian fintech scale-up had failed two MNB mini-audits on KYC evidence chain. We rebuilt the onboarding with SumSub + SimplePay integration, risk-scoring persistence, and a proper audit-trail schema.
Read more - 07 / 17Industry · health · 11 weeks
AI support copilot for e-health SaaS · 38% deflection, 0 PHI leaks in 6 months
A Hungarian e-health SaaS needed AI-powered support that never leaks PHI and always cites a source. We shipped a Claude Opus + pgvector copilot with strict refusal guardrails; 6 months in, zero PHI incidents.
Read more - 08 / 17Industry · saas · 8 weeks
AI news aggregator with bias scoring · launch to 12k MAU in 8 weeks
Built a news aggregator that pulls multiple sources, fact-checks with AI, and scores bias. Launched to 12k MAU in 8 weeks, zero moderation incidents.
Read more - 09 / 17Industry · ecommerce · 7 weeks
Shopify Theme → Hydrogen migration · +41% mobile conversion, LCP 3.8s → 0.7s
Migrated a Hungarian DTC brand from a Shopify liquid theme to Hydrogen (React/Remix). Mobile conversion +41%, LCP down to 0.7s, first-week bug rate under 0.3%.
Read more - 10 / 17Industry · saas · 14 weeks
NIS2 readiness for a Hungarian energy SME · passed first audit on schedule
Turned a manually-maintained energy-sector SME into a NIS2-ready organisation in 14 weeks · from gap assessment to passing the first Kibertan-act audit on schedule.
Read more - 11 / 17Industry · saas · 12 weeks
AI routing platform for logistics · 17% fewer km, 22% higher on-time rate
Built an AI-assisted routing platform for a mid-size EU logistics operator · OR-Tools + GraphHopper + LLM-based dispatcher explainer. 17% fewer route km, 22% higher on-time delivery rate.
Read more - 12 / 17Industry · ecommerce · 9 weeks
Dual-gateway payments for a HU marketplace · zero lost tx in 6 months
Unified Stripe Connect + SimplePay under one payment abstraction for a Hungarian B2B marketplace. Zero lost transactions in 6 months; automatic failover when either gateway had an incident.
Read more - 13 / 17Industry · saas · 6 weeks
Mobile puzzle game launch · Expo-only, 60fps on mid-tier Android
Shipped a React Native puzzle game via Expo · 60fps on Pixel 6, daily-challenge AI generation, App Store + Play Store approved on first submission.
Read more - 14 / 17Industry · saas · 10 weeks
Internal RAG knowledge base for a Hungarian law firm · on-prem, 200+ lawyers, 0 data incidents
An internal RAG for a Hungarian law firm · 40k legal documents indexed, 200+ lawyers using daily, strict per-user access controls, zero data incidents.
Read more - 15 / 17Industry · fintech · 8 weeks
DAO governance dashboard · 30-day participation +89%, 4 audited contracts
Rebuilt a DAO's governance dashboard from a basic Tally fork into a tailored proposal + treasury + voting-analytics app. Participation rate up 89% in 30 days.
Read more - 16 / 17Industry · saas · 4 weeks
B2B SaaS MVP · 0 → paying customer in 4 weeks
Scoped and shipped a B2B SaaS MVP for a Hungarian founder in 4 weeks. Multi-tenant RLS, Stripe Billing, Clerk auth, AI-powered core loop. First paying customer in week 5.
Read more - 17 / 17Industry · ecommerce · 5 weeks
AI customer support for a HU webshop · 47% ticket deflection, 4.5/5 CSAT
Shipped a Hungarian-language AI customer support copilot integrated with Intercom for a DTC webshop. 47% ticket deflection, 4.5/5 CSAT on AI-handled tickets, zero product-info hallucinations.
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