01
About
I build backend systems that hold up under real production load — fintech, healthcare, education, ad-tech — mostly in Java and Spring Boot, mostly on AWS or Azure. I like taking a project from an empty repository to a fully tested, delivered product, and I've done that end to end more than once.
Outside the day job, I ship native mobile apps in Swift and Kotlin, and I build small 3D web experiments — currently a Three.js naval combat game with procedural ocean waves, just because I wanted to see if I could make water feel right in a browser.
5+
YEARS IN PRODUCTION BACKEND
4
INDUSTRIES SHIPPED IN
2
MOBILE PLATFORMS, NATIVE
02
Experience
System Logistics
Mobile & Backend Developer
Feb 2026 – Jun 2026
MVP mobile app for truck drivers — native iOS (Swift) and Android (Kotlin), a Spring Boot API layer, and Bitrix24 CRM integration keeping driver and logistics data in sync.
- Built the iOS MVP natively in Swift, covering core driver-facing workflows end to end
- Built the Android MVP natively in Kotlin, mirroring the iOS feature set for platform parity
- Designed and implemented the REST API layer in Spring Boot behind both clients
- Integrated with Bitrix24 CRM for real-time sync of driver and logistics data
Grid Dynamics SRL
Senior Software Engineer
Aug 2024 – Aug 2025
A year across three internal products — resource planning, an employee skills portal, and a peer-recognition module — each taken from architecture to delivery.
SRP — Smart Resource Planning System
Aug 2024 – Mar 2025
Replaced spreadsheet-driven staffing with a governed, automated workflow syncing Google Sheets and internal databases.
- Contributed to the data model, integration layer, and core allocation engine
- Automated staff-to-project matching, giving team leads real utilisation metrics
- Built the REST API backend with role-based access and a full audit log
- Set up CI/CD and structured code review standards for the project
InGrid Portal — Employee Skills & HR Dashboard
Mar 2025 – Jun 2025
Internal portal combining skill search, structured profiles, and HR analytics.
- Contributed to architecture and delivery: modular backend, CI/CD from kickoff
- Built skill-based search with dynamic filtering by stack, availability, seniority
- Integrated with Active Directory and HR systems; SSO via OAuth2
Thank You Token — Peer Recognition Module
Jun 2025 – Aug 2025
Peer-to-peer recognition living inside InGrid, from an empty repository to a tested MVP in six weeks.
- Bootstrapped the module: environments, architecture, delivery pipelines
- Built token issuance, transfer, and balance logic with an immutable audit trail
- Built the redemption and leaderboard UI integrated into the InGrid frontend
Amdaris SRL
Java Middle → Senior Developer
Sep 2021 – Mar 2024
Two and a half years spanning banking, healthcare, and education — a mortgage engine, a veterinary platform, and a long-running ed-tech backend for Pearson.
MortgageCore — Mortgage & Refinancing Engine
Sep 2021 – Jul 2022
Backend for a banking programme handling mortgage origination and refinancing end to end.
- Built the core calculation engine for amortisation, rates, and eligibility scoring
- Integrated 3 external credit bureau APIs for creditworthiness checks
- Secured all APIs with Spring Security + JWT; Flyway migrations, Testcontainers
PetCare — Veterinary Clinic Management Platform
Aug 2022 – Feb 2023
Multi-clinic platform for appointments, lab orders, and a structured animal EHR.
- Built appointment booking with calendar management and reminders
- Designed the EHR data model covering history, vaccinations, and lab results
- Developed role-based access control and wrote unit + integration tests
Pearson ELL — English Language Learning Platform
Mar 2023 – Mar 2024
Multi-tenant course delivery, assessment engine, and progress analytics at enrolment-spike scale.
- Built multi-tenant course and lesson management modules
- Built the quiz engine with automated scoring and full result history
- Applied Redis caching and AWS S3 media offload under peak load
- Real-time student/educator messaging over WebSocket + STOMP
Iello
Junior Java Developer
Feb 2020 – Aug 2021
First engineering role — computer vision and document processing, from raw camera feed to production dashboard.
Spectors AI — Real-Time People Counting System
Edge-aware computer vision counting foot traffic in front of retail displays, driving dynamic ad rotation.
- Built a YOLOv3/OpenCV pipeline for real-time people detection
- Built ad-switching logic based on live audience size and cost parameters
- Containerised and deployed edge components across multiple locations
Sectors AI — Invoice Parsing Pipeline
Automated invoice intake with OCR and a Producer-Consumer architecture for bursty overnight batches.
- Implemented Tesseract OCR extraction for varied client invoice formats
- Designed a Producer-Consumer architecture decoupled per client
- Improved OCR accuracy via image pre-processing and binarisation
03
Skills
Languages & Frameworks
Data & Messaging
Cloud & DevOps
Testing & Tools
Currently building — Штиль и Шторм
A browser-based naval combat prototype in Three.js: procedural ocean swell, wind-driven sailing, and broadside cannon physics. Started as a 2D canvas game, now fully 3D.
See it on GitHub →
04 — Contact
Let's talk about what you're building.
Open to senior backend and mobile engineering roles, remote or Chisinau-based. The fastest way to reach me is email.
Email
sweetiki56@gmail.com
Phone
+373 79 003 595
LinkedIn
/in/nichita-tiutiunic
GitHub
sweetiki57-a11y
Location
Chisinau, Moldova