Custom SaaS Development for London Startups

Ujjwal Technolabs builds custom SaaS for London startups remotely from Indore, India. Founded by Deepak Nagar (12+ years full-stack), we ship production software worldwide. We're not physically in London — the value is senior, hands-on custom development delivered async, the same way we built our own multi-tenant SaaS, FlexiCommerce, and shipped client apps to production.

Why London founders need a real custom build

London is Europe's fintech and SaaS capital, where compliance pressure, payments complexity, and a crowded market mean off-the-shelf tools rarely fit a differentiated product. When your edge is the workflow itself — a regulated onboarding flow, a multi-tenant billing model, a niche marketplace — a templated builder hits a wall fast. A custom platform lets you own the architecture, the data, and the roadmap rather than bending your business to someone else's feature set.

We're a development studio, not a London agency with a Shoreditch address. If proximity for in-person whiteboarding is essential to you, a local team is the better fit. If you want senior engineering at a sensible burn rate, delivered transparently, remote works well — and below is exactly how.

How our worldwide remote model works for London teams

Indore is roughly 4.5–5.5 hours ahead of London, which gives a genuine working-hours overlap most afternoons (UK morning is our afternoon). That's enough for a daily sync or a live call when decisions are needed, while the rest of the day runs async.

• Async-first communication: written specs, recorded walkthroughs, and a shared backlog so progress is visible without you sitting in meetings.
• Real time-zone overlap: a predictable window each working day for live discussion and unblocking.
• Full code ownership from day one: the repository is yours from the first commit — no platform lock-in, no proprietary runtime you can't leave.
• Pay-as-it-ships: transparent "from" pricing billed monthly as the product ships. You can pause anytime.

See our services and pricing for the full picture, or get a free build plan scoped to your idea.

What we build

We're not tied to one stack — we build with whatever the product needs. Our proven, production-tested core is Laravel/PHP with Filament, Vue 3/Inertia, React, TypeScript, Tailwind, Flutter, and AWS, with payments via Stripe, Razorpay, PayU, and PhonePe. We're also fluent in Python/FastAPI, Go, Next.js, React Native, GraphQL, and AI tooling like RAG, vector search, and LLM agents when a build calls for them.

• SaaS platforms: subscription products, dashboards, and admin systems built to scale.
• Multi-tenant products: our own flagship, FlexiCommerce, is a live multi-tenant e-commerce SaaS — ~450,000 lines of code, 187 data models, ~500 API endpoints, 6 country variants and 9 languages, built solo in about 2.5 months. We've solved tenancy, billing, and theming in production, not in theory.
• Native mobile apps: Flutter and native builds. FlexiCommerce ships with three native Flutter apps; we've shipped a Brazilian client's field-inspection app (Flutter + Next.js + Supabase) to production and built an app with 10,000+ downloads.
• AI features: practical, cost-aware AI like FlexiCommerce's AI Store Generator (around $0.06 per generation), plus retrieval-augmented search and LLM-driven workflows where they earn their keep.

The reason we lead with our own products is simple: we don't just build SaaS for clients, we run it ourselves, so we know what production actually demands — uptime, payments edge cases, multi-currency, and the operational reality after launch.

Is remote the right call for your London build?

Choose a local London studio if you need someone in the room every week, or a same-timezone agency if your team can't operate async. Choose us if you want one senior team that owns the build end to end, hands you the code, and bills only as work ships. For a first MVP or a focused v2, that combination tends to move faster and cost less than a traditional agency engagement — and you keep everything you pay for.

If that fits, the next step is a free build plan: a concrete scope, stack, and timeline for your product, with no obligation. Email Deepak directly at deepak@flexicommerce.in.