Андрей

Cherniavskyi Andrii
Full-Stack Software Engineer · .NET / C# · Angular
[відкрити контакти](див. вище в блоці «контактна інформація») | github.com/ChAndrey06 | [відкрити контакти](див. вище в блоці «контактна інформація»)
Remote · open to relocation · EU work-eligible time zones (UTC+1 to UTC+5)

SUMMARY
Full-stack engineer with five years of commercial experience building production systems end-to-end in C# / .NET and Angular. I
have repeatedly taken products from an empty repository to a deployed system in use by paying customers: a contract generation
and e-signature platform, CRM systems for transport and logistics operators, and a media search platform built on face and object
recognition. I am used to owning architecture, database design, API contracts and deployment rather than only implementing
tickets.

EXPERIENCE

Full-Stack Engineer · Independent Contractor
September 2025 - Present · Remote
– Designed and built a media asset platform for a commercial video production company: the studio uploads footage, shares
one link with its client, and the client finds every frame they appear in by uploading a selfie. The same pipeline searches
footage for brand appearances.
– Implemented two interchangeable recognition engines behind a single API - InsightFace on local GPU and AWS Rekognition -
selectable per client according to cost and privacy requirements.
– Built asynchronous processing with a Redis-backed job queue and worker pool feeding the recognition engine; indexed tens of
thousands of photos and extracted video frames. Deployed and operated the system on AWS (EC2, S3) with Docker.
– In parallel: ongoing backend development on a freight logistics CRM, and an independent mobile product (Flutter client, .NET
API backend).
Stack: .NET API, C#, Entity Framework, PostgreSQL, Redis, Docker, AWS (EC2, S3, Rekognition), Python, InsightFace, Angular,
Flutter.
Software Engineer (Mobile) · Apartments Realty, Karlovy Vary, Czech Republic
November 2023 - August 2025 · Remote
– Sole mobile developer on a local-services marketplace application, built top to bottom in a four-person product team (tech
lead, backend engineer, designer, myself).
– Designed the client architecture in Flutter with the BLoC pattern, integrated Firebase and the existing backend API, and
shipped releases continuously across two years of development.
– Established unit and widget test coverage under engineering practices set by a tech lead with enterprise experience; reviewed
and reworked contributions to the codebase.
Stack: Flutter, Dart, BLoC, Firebase, Material Design, unit and widget testing, Git.
Full-Stack .NET Developer · Contract
September 2021 - November 2023 · Remote
– Rental contract and e-signature platform (WildBikes) - built from scratch: contract generation from reservation data, client
data management, remote electronic signature by link, authorised external API. .NET Core API + EF + PostgreSQL + VIEW2PDF,
Angular.
– CRM for an intercity bus operator - admin panel and public booking site managing drivers, passengers, routes, stops and
vehicles. .NET Core MVC + EF + PostgreSQL + Knockout.js.
– Freight logistics CRM - two years of feature development on a live system: order lifecycle processes, new entities, custom
sorting and filtering, schema changes, mobile adaptation. .NET Framework MVC + EF + MS SQL.
– SaaS data aggregation platform - presentation services for expert contributors and end users. .NET MVC, EF, PostgreSQL,
Blazor, Docker, unit testing.
– Angular analytics dashboard and a ChatGPT-based Telegram bot - data visualisation with a migration between component
frameworks (Angular 14-15, PrimeNG / Material); content generation bot in C# .NET 7, Telegram.Bot.

SKILLS & LANGUAGES
Backend C#, .NET / .NET Core (Web API, MVC, Blazor), Entity Framework, SqlKata, OData, REST API design
Frontend & mobile Angular, TypeScript, JavaScript, React, Knockout.js, jQuery, HTML5, CSS; Flutter, Dart, BLoC, Firebase
Data PostgreSQL, MS SQL, MySQL, SQLite, Redis, MongoDB
Infrastructure Docker, AWS (EC2, S3, Rekognition), Linux, CI/CD, Git
Python & practices OpenCV, InsightFace, FastAPI, Django; unit and integration testing, code review, system and database design
Languages English - fluent (working proficiency). Ukrainian and Russian - native. Georgian and Czech - basic.