Projects

05/2024 – present · Designed the supplier module contract and the migration model; owns the release train on the hotel gateway

The aggregation layer that makes many wholesalers answer one API contract: one module per supplier, brand differences pushed into data, and cross-call state carried inside the identifiers themselves.

• 75

  supplier codes on 31 modules

• 8

  gateway services

• 5

  product lines on one contract

• Node.js
• Koa 2
• Express 4
• MySQL + Knex
• Redis (ioredis)
• AWS SQS
• +5

02/2026 – present · Author and maintainer — solo

~70 engineering runbooks packaged as executable commands across 3 installable repos used by two teams — with mechanised guardrails on every operation that touches production.

• ~70

  executable runbooks

• 3

  installable repos

• 9

  MCP servers, per-tool scoped

• 6

  subagent roles

• Claude Code skills & plugins
• MCP (9 servers)
• Bash
• Python 3
• Node.js
• macOS launchd
• +2

2026 · Owner of the mapping campaigns — design, execution, verification, rollback

Resolving the same physical hotel across suppliers in a ~1.9M-row identity table — using a bridge-through-a-third-supplier technique, verified by name similarity and geo distance before any write.

• 1.9M

  rows in the identity table

• +109,786

  rows written in the largest campaign

• 94.9%

  mean name similarity

• 11,953

  rows deliberately rolled back

• Node.js
• MySQL + Knex
• Redis
• Neo4j + Cypher
• Python (TF-IDF, Siamese)
• fuzzball
• +1

08/2026 · Sole author, rolled out to four further services

Two design calls — snapshot the request at the first handler line, before any code mutates it, and derive the field table from each endpoint's own validation schema — made the tool portable enough to ship across all five products in a single day.

• 5

  products, shipped the same day

• 44–75%

  smaller payload than JSON

• ~626K

  search log rows in production

• Node.js
• Koa
• Express
• MySQL + Knex
• Redis
• Joi
• +2

2026 · Designer and owner — backend, integration handbook, flow diagrams

One configurable approval engine shared by several business modules — with boundaries enforced by lint, configuration snapshotted at submit, and per-level SLA reminders running on a delayed-job queue.

• 50

  TypeScript files behind one gateway class

• 11

  documented error codes

• 7

  flow diagrams

• 18

  user stories written back from code

• NestJS 10
• Fastify
• TypeScript
• TypeORM
• PostgreSQL
• Redis
• +3

2026 · Feature owner end-to-end — backend, consumer web, admin, accounting, mail

When a feature spans eleven repositories, the unit of release is the set, not the repo — attaching a flight-delay insurance product to a live booking flow, where missing a single repository means undercharging customers with no exception thrown anywhere.

• 11

  repos shipped together

• 69

  commits cherry-picked

• 18

  conflicts resolved

• 45

  MRs covered

• NestJS
• Express 4
• Next.js
• React
• PostgreSQL
• TypeORM
• +5

01/2024 – present · Backend Developer

A free application for digital business cards, contact management and an internal social network. I owned the backend: data model redesign, new features, optimisation and code review.

• NestJS
• PostgreSQL
• Redis
• Sentry
• AWS CloudWatch

10/2023 – 01/2024 · Backend Developer

A platform letting marketers optimise their investment against actionable retail and shopper data. I built the initial code base and designed the database structure.

• NestJS
• PostgreSQL
• Redis
• Sentry
• AWS CloudWatch

09/2022 – 01/2024 · Backend Developer

The service that aggregates hotel data from many suppliers, builds the hotel mapping system, and provides hotel booking to the wider microservice platform.

• KoaJS
• MySQL
• Redis
• AWS SQS
• Neo4j
• camaro + xmlbuilder
• +2

09/2022 – 01/2024 · Backend Developer

Part of the microservice platform: integrating data from many flight suppliers so the rest of the system sees a single provider for flight booking.

• KoaJS
• MySQL
• Redis
• AWS SQS
• camaro + xmlbuilder
• Pino
• +1

09/2022 – 01/2024 · Backend / Frontend Developer

A UI dashboard managing every service in the microservice platform: flights, hotels, tours, transfers, car hire and insurance. I worked on both the backend and the frontend.

• KoaJS
• ReactJS
• MySQL
• Redis
• Ant Design
• ReCharts