APIs & service contracts
Typed REST or GraphQL APIs with versioning and validation, designed to absorb the roadmap instead of resisting it.
The system of record and the contracts around it: typed APIs, sound data models, and services engineered for integrity and scale, because the data outlasts every UI.
Interfaces get redesigned every couple of years; the data model underneath them is forever. A shortcut in the schema or the API contract compounds quietly until it is load-bearing and unmovable.
The failures that hurt most live here: the lost write, the race condition, the report that is subtly wrong, the endpoint that buckles at ten times the traffic. None of them show up in a demo.
We design the data model and the API contract before the throughput problem exists: normalized where it matters, typed at the boundary, and explicit about the invariants the business depends on.
Scale is engineered deliberately, not guessed: indexing, caching, queues, and idempotent operations added where load and correctness demand them, with the numbers to justify each one.
Typed REST or GraphQL APIs with versioning and validation, designed to absorb the roadmap instead of resisting it.
Schemas designed for integrity and query patterns you actually have, so the data stays trustworthy as it grows.
Indexing, caching, queues, and idempotency added where load and correctness require them, backed by measurement.
Third-party services, webhooks, and auth boundaries wired in with retries, audit trails, and least privilege.
Engineered the mission-critical backend for the Mobile Wallet Token crypto ATM network, allowing users to buy and sell major cryptocurrencies and stablecoins using various fiat currencies. The solution is built on a scalable, high-performance Node.js/Express.js architecture, covering secure blockchain-side logic, API integration with multiple crypto exchanges, and fiat-to-crypto conversion handling.
View case studyWeb PlatformANZ Cars is a comprehensive, full-stack platform for automotive services and transport. The site serves as a single portal for users to browse the full fleet of available cars, view and select maintenance services, book or schedule rides and service appointments, and process secure payments. It uses a real-time database for inventory and scheduling.
View case studyAPI design, data modeling, integrations and auth, and the reliability engineering (indexing, caching, queues, idempotency) that keeps a system correct and fast under real load.
Decided by the data and the access patterns, not by fashion. Postgres and REST are our defaults because they fit most products; we reach for GraphQL or other stores when the shape of the problem earns it.
Yes. We profile first to find the real bottleneck, the query, the missing index, the N+1, the hot lock, then fix it, rather than throwing infrastructure at a symptom.
Yes. We deliver a documented, typed API a separate frontend or mobile team can consume cleanly, with the contract as the shared source of truth.