Your SaaS, built by the
person who architects it.
Multi-tenancy, billing, real-time infrastructure, and AI features, designed and shipped end to end. No account managers, no handoffs, no prototype that has to be rebuilt the moment it gets used.
First call is a real architecture conversation, not a sales pitch. You leave with a system design you could hand to anyone, whether or not you build it with me.
- req/s, zero deadlocks
- 15Kreq/s, zero deadlocks
- double-charges in production
- 0double-charges in production
- production systems shipped
- 10+production systems shipped
- years building for clients
- 7+years building for clients
Six ways this goes wrong.
None of these are hypothetical. Every one is something I have been called in to fix on somebody else's codebase.
The prototype can’t become the product
It was built to demo, not to run. Tenancy was never modelled, so the first real customer forces a rewrite of the data layer.
Billing was bolted on last
Subscriptions, proration, failed payments, and refunds get retrofitted around code that assumed everyone was on one plan. Revenue bugs follow.
It works until it’s used
Fine with ten users, collapses at a thousand. No queues, no caching, no locking; every slow operation blocking an HTTP request.
Nobody owns the infrastructure
The agency shipped a repo and left. No deploy pipeline, no monitoring, no one who can explain why production is down at 2am.
The AI feature is a liability
A model dropped into the middle of a workflow with no validated inputs or outputs. Impressive in the demo, unpredictable with real data.
You’re managing a team, not building
Four contractors across three timezones, and you have become the integration layer between them. Velocity goes down as headcount goes up.
The parts that decide whether it holds.
A SaaS product is not a set of screens. It is tenancy, money, concurrency, and access control, and each one is far cheaper to get right the first time.
Multi-tenancy done properly
Tenant isolation modelled in the schema from day one: row-level security, scoped queries, per-tenant configuration and limits. Not a customer_id column bolted on later.
Billing that survives edge cases
Stripe subscriptions, usage-based top-ups, proration, dunning, and replay-safe webhooks. Idempotent by construction. I have shipped payment systems with a zero double-charge record in production.
Real-time and background work
WebSockets, queues, and workers as separate processes so a deploy never kills an in-flight job. One system I built handles 15,000 req/s with zero deadlocks.
Auth, roles and permissions
Email, OAuth, SSO, and TOTP 2FA with role-based access enforced in the database rather than the UI. Five-tier RBAC shipped on a live donation platform.
Infrastructure you actually own
Docker, Nginx, CI/CD, DNS, TLS, and monitoring, all set up on your accounts, documented, and handed over. No vendor lock-in and no bus factor of one.
Observability from day one
Sentry, PostHog, structured logging, and health checks wired in before launch. An async failure with no trace is one you will never reproduce.
Security and compliance
Encrypted secrets, hardened servers, WAF rules, and audit trails. I have run a vulnerability remediation programme verified by before/after Nessus scans.
AI features with deterministic edges
Claude, OpenAI, and RAG pipelines with normalized input and validated output. A model inside a pipeline is fine; a model as the pipeline is a liability.
Platforms I've already shipped.
Not mockups or concepts. Multi-tenant systems in production, each with a hard problem at its centre.
Three ways to work together.
Scoped in milestones, not one large commitment. Every engagement is quoted against a written technical plan; no figure gets invented before the architecture is understood.
MVP Sprint
Get a real product in front of real users
Best for: Founders validating an idea with something users can actually pay for
- Product and architecture definition
- Core application build, front to back
- Auth, tenancy, and billing foundations
- Deployed to your own infrastructure
- Handover docs and a walkthrough
Full Build
The complete platform, production-hardened
Best for: Teams taking a validated product to a serious, paying customer base
- Everything in MVP Sprint
- Real-time infrastructure, queues, and workers
- Advanced RBAC, admin tooling, and audit trails
- AI/LLM feature integration where it earns its place
- Observability, alerting, and security hardening
- Load and concurrency work against real traffic shapes
Fractional CTO
Senior technical ownership, ongoing
Best for: Funded teams that need architecture and delivery leadership, not another pair of hands
- System architecture and technical roadmap
- Code review and engineering standards
- Vendor, infrastructure, and cost decisions
- Hiring support and team ramp-up
- Hands-on build where it moves fastest
Four steps, no mystery.
You know what happens next at every point, and you keep everything produced along the way.
Architecture call
We go through what you are building, who it is for, and where it will break first. You leave with a system design you could hand to any engineer. Free, and yours regardless of what happens next.
Scope and plan
A written technical plan: data model, services, integrations, milestones, and what is explicitly out of scope. Fixed deliverables so neither of us is guessing.
Build in the open
Weekly demos against a staging environment you can click through. Everything lands in your repo and your infrastructure from the first commit.
Launch and hand over
Production deploy, monitoring, documentation, and a walkthrough with whoever takes it forward. Optional retainer if you want me to keep owning it.
The things you're actually weighing.
You talk to the person writing the code. There is no account manager relaying requirements to an offshore team, and no discovery phase that exists to justify a bill. I have run the agency side too. I scaled a production department to twenty people, which is exactly why I know what gets lost in that handoff.
Tell me what you're building.
Send me a message and you will get a real reply from me, under 24 hours. If it is a fit, we book the architecture call. If it is not, I will tell you that too and point you somewhere better.
WhatsApp +1 862 360 2501
First call is a real architecture conversation, not a sales pitch. You leave with a system design you could hand to anyone, whether or not you build it with me.