Олександр

OLEKSANDR SHULENIN
F U L L - S TA C K E N G I N E E R · B A C K E N D & M O B I L E
Bunclody, Co. Wexford, Ireland | [відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація») | github.com/shuly69 | eiredrive.com

PROFESSIONAL SUMMARY
Full-stack engineer with 8 years of experience shipping production software — from PHP/Laravel backends to TypeScript/NestJS services and
native mobile clients. Sole architect and engineer of DriveIQ, a driver-theory learning platform live on the App Store and Google Play: NestJS
backend, native Android and iOS apps, in-app payments, device attestation, analytics and the infrastructure it runs on. Comfortable owning a
product end to end — data modelling, secure REST APIs, automated testing, containerised CI/CD and production operations.
FLAGSHIP PRODUCT

DriveIQ — Irish Driver Theory Test Platform LIVE IN PRODUCTION 2023 – Present
eiredrive.com | App Store | Google Play | NestJS · Prisma · PostgreSQL · Redis · Kotlin/Compose · SwiftUI · Docker · GitHub Actions
Backend. NestJS + Prisma over PostgreSQL in twelve bounded modules (auth, billing, exams, content, analytics, notifications, admin); JWT
access/refresh with rotation and RBAC; Redis session store with TTL keeping in-progress exams out of the database.
Two native clients, one product. Android (Kotlin, Jetpack Compose) and iOS (SwiftUI), feature-for-feature aligned, localised into five
languages with offline-tolerant entitlement resolution.
Payments. Google Play Billing and StoreKit 2 with server-side receipt verification, idempotent purchase-token migration, and RTDN / App
Store Server Notifications webhooks for renewals, refunds and cancellations.
Security. Play Integrity and Apple App Attest device attestation rolled out monitor-first on live traffic, TLS certificate pinning, AES-GCM token
encryption in the Android Keystore, production-gated API docs.
Infrastructure & delivery. Dockerised stack on a Hetzner VPS behind nginx, Cloudflare R2 for media, GitHub Actions pipelines for backend,
Android and iOS with auto-deploy on merge; Sentry, Grafana and Firebase Crashlytics/Analytics.
Content & growth. A 1,000+ question bank with an automated import and media-validation pipeline, and a 65-page statically generated
marketing/SEO site built from the same content source.

TECHNICAL SKILLS
Languages TypeScript, JavaScript, Kotlin, Swift, Python, PHP, SQL Data PostgreSQL, MySQL, Redis, Prisma ORM
Backend NestJS, Node.js, FastAPI, Laravel, REST, OpenAPI DevOps Docker, GitHub Actions (CI/CD), nginx, Linux, VPS, S3/R2
Frontend React, Next.js, Tailwind CSS, HTML, CSS Testing Jest, Supertest, Pytest, Swagger, JUnit
Mobile Android (Kotlin, Jetpack Compose), iOS (SwiftUI) Monitoring Sentry, Grafana, Firebase Analytics & Crashlytics
EXPERIENCE
Full-Stack Engineer — Independent / Product Development, Ireland 2023 – Present
Built and operate DriveIQ (above) end to end: architecture, backend, both mobile apps, store submissions, release management and day-to-day
production operations.
Delivered additional full-stack applications covering relational data modelling, JWT/RBAC security and type-safe, documented API contracts.
Ran containerised CI/CD with GitHub Actions — automated tests and quality gates on every merge, with protected branches and pull-request
review as the only path to production.
Backend Developer — PHP / Laravel 2021 – 2023
Developed backend services and REST APIs in Laravel for a live production system serving daily users.
Designed secure authentication, role-based access control and integrations with external service APIs.
Optimised database queries and refined indexing strategy, significantly reducing API latency and improving server response times under load.
Web Developer — PHP / JavaScript 2018 – 2021
Built and maintained server-rendered web applications and internal tools: MySQL schema design, form and reporting workflows, third-party API
integrations.
Owned deployments, bug triage and the incremental refactoring of legacy code into maintainable, tested modules.
SELECTED OPEN-SOURCE PROJECTS
Storefront API — Headless E-commerce REST API github.com/shuly69/storefront-api
NestJS, Prisma, PostgreSQL, JWT, Docker, GitHub Actions
Modular catalog, user and order API with RBAC and transactional order workflows — atomic stock decrement with automatic restock on
cancellation; global exception filters mapping database errors to typed HTTP responses; Jest and Supertest suites in CI.
LinkForge — URL Shortener with Analytics github.com/shuly69/linkforge
Next.js, NestJS, Prisma, PostgreSQL, Redis, Turborepo, Docker
Turborepo monorepo sharing type-safe API contracts via Zod; Redis-cached redirects for low-latency resolution and real-time click analytics.
Lumen — Retrieval-Augmented Document Q&A github.com/shuly69/lumen
FastAPI (Python), React, Vite, Tailwind CSS, TanStack Query
Async RAG service streaming cited answers over Server-Sent Events, with a pluggable document-retrieval interface and Docker Compose
deployment.
ADDITIONAL
Sales Assistant — Retail (Part-Time), Ireland Nov 2023 – Present
Held employment while building and shipping software independently. Languages: English (professional working proficiency) · Ukrainian (native) ·
Russian (native). Work status: Full permission to work in Ireland.