Petar Stoyanov — Software Engineer

I design, build, deploy and maintain software from scratch to production. AI makes me faster. · Sofia, Bulgaria

7+ years in software · App used by 10M+ people · Azure and AWS in production · Full app built solo

Open to part-time or contract work (B2B) · remote · can start within a week

Experience

Software engineering company headquartered in Minneapolis, USA: 2,000+ engineers in 10+ countries.

Global leader in garage door openers and smart access systems; its app is used by 10M+ people.

Back-end system design and implementation; system architecture.
Performance and scalability optimisation.
Integration of third-party services and APIs.
System health monitoring (Grafana) and resolving production issues.
Deployment and release management support; security and compliance.
Code reviews, best practices and mentoring junior developers.
Unit, component and integration tests; technical documentation.
New-feature decisions; technical expertise on issues and blockers.
Working with QA and other teams, and with the iOS/Android developers on the mobile app.

C# · .NET · Azure · AWS · Cosmos DB · SQL · Kubernetes · RabbitMQ · Grafana · Datadog · Entity Framework

Recycling and secure IT asset disposition company operating across the US and Latin America.

Sole developer (one-man show): designed and built a .NET application end to end.
Heavy OCR scanning to digitise the intake of devices and documents.

C# · .NET · OCR

Leading US construction company with 100+ years in the market.

Revit plugin built from scratch with the Revit API and Windows Forms.
Kanban, a branching strategy, and every change merged through a pull request approved by the lead.

C# · Revit API · Windows Forms

Web app that automates group management for the company's employees.

C# · ASP.NET Core · Angular · Entity Framework

CRM integration company.

Integrations of CRM platforms with other software, in several languages: Resco Mobile CRM (offline/online access to Microsoft Dynamics, Salesforce and Oracle CX), SuiteCRM, SugarCRM and SpiceCRM.
Made sure the integrations worked reliably across the different platforms.

Digital transformation: moving banking products and services to digital channels.
Think Tank on banking solutions built on IoT.
Policies, procedures, contracts and general terms: the business and compliance rules that banking software has to enforce.
Trained 100+ new employees from across the country.

Back end: C#, .NET, ASP.NET Core (Web API, MVC, Razor Pages), Entity Framework
Cloud: Azure (Cosmos DB, Blob Storage, DevOps), AWS (DynamoDB), Kubernetes, RabbitMQ, Redis
Data: MS SQL Server, MySQL, NoSQL
Front end: TypeScript, Angular, JavaScript, jQuery, HTML, CSS
Testing: xUnit, NUnit, MSTest: unit, component and integration tests
Monitoring: Grafana, Datadog
Also: PHP, Bash, Linux, Raspberry Pi, Revit API, Unity 3D, Jira

Tools: Claude (Claude Code), GitHub Copilot, Cursor, OpenAI Codex
Use: Refactoring and boilerplate, test generation, reading legacy code, docs, multi-step agent tasks
Rules: Every change reviewed by me and covered by tests; no confidential client code in unapproved tools

PhD, Information Systems and Technologies, Informatics and Computer Science, University of Library Studies and Information Technologies (2024 – 2027 (in progress))
Master's, Information Systems and Technologies, University of Library Studies and Information Technologies (2018 – 2019)
Bachelor's, International Economic Relations, University of Veliko Tarnovo (2010 – 2014)
Alpha .NET Track: C#, OOP, design patterns, data structures and algorithms, ASP.NET Core MVC, EF Core, unit testing, Telerik Academy (2020)

Speaker, RoboTalks, Technical University of Sofia (2023): apps for smart home devices
Internal seminars on .NET and programming at Coherent Solutions
Mentor at Telerik Academy: 20+ people prepared for the entrance exam
Trainer at Raiffeisenbank: 100+ new employees from across the country

Bulgarian ●●●●● · English ●●●●○

I build SaaS and web products from idea to production. Got an idea or a project you want built together? Email me.