Nik Nenkov cover
Nik Nenkov
Nik Nenkov

Business Technology Consultant and Full-Stack Developer

Open to offers · Member since 29 Aug 2026
Message
Location
Sevlievo, Bulgaria
Desired salary
Unspecified
Work preference
Hybrid
Experience level
Senior

About

Professional summary

I am a business technology consultant and hands-on full-stack engineer with more than eight years of experience delivering enterprise, product, and outsourcing software. I combine business analysis, technical strategy, solution architecture, systems integration, and implementation to turn operational problems into maintainable digital products.

I lead work from discovery and requirements through data modelling, API design, development, automated testing, deployment, production observability, handover, and continuous improvement. My work includes custom business systems, ERP-style platforms, workflow automation, integrations, and data-intensive applications.

My core technical strengths include Java, Spring Boot, TypeScript, React, Angular, Vue.js, Go, Rust, SQL, and distributed systems. I have experience with REST and event-driven architectures, cloud infrastructure, containers, geospatial systems, IoT/GPS platforms, financial technology, and business-process automation.

I have worked across international teams and client engagements in procurement, payments, mobility, hardware tracking, ticketing, real estate intelligence, and digital assets. I am comfortable collaborating with business owners, product teams, architects, QA, DevOps, hardware teams, and external suppliers.

I take a pragmatic, ownership-driven approach to engineering and technical leadership. I enjoy mentoring developers, improving delivery safety through testing and observability, and using AI-assisted engineering workflows to accelerate high-quality outcomes.

Skills

52 capabilities

Tech stack & tools

Working toolkit

Experience

Career history

Business Technology Consultant Greenwall Business Systems

I operate an independent consultancy and project-delivery practice focused on custom business systems, integrations, automation, and technical direction.

I lead discovery, solution design, architecture, and hands-on implementation for operational software and independent product initiatives.

Sole Software Engineer & Technical Systems Specialist KONTAKT-VN

I independently design and develop the Tsar Bahar B2B back-office and ERP-style platform for spice import, processing, warehousing, and wholesale operations.

I model catalogue, sales, supply, inventory, transport, GPS, document, and expense workflows. I integrate WooCommerce, email, fleet, toll, accounting, and external data services while owning architecture, implementation, operations, and stakeholder coordination.

Software Developer Nexo / NDS EOOD

I created extensive Selenium and Cucumber acceptance and end-to-end test coverage for a legacy financial and digital-assets codebase.

I also delivered product features, migrations, and production fixes in an AWS environment using Terraform, Datadog, and Kafka-related systems.

Java Backend Developer PLAN A / SAP Ariba Business Network

I worked in a distributed international team on legacy Java services and the Ariba Framework for an enterprise procurement and supply-chain platform.

I added substantial automated test coverage and delivered selected product features, improving regression protection and delivery safety.

Software Developer / Contractor TopView Sightseeing

I contributed to operational software for sightseeing and cruise services in a remote contractor engagement.

My work covered ticketing, reservations, scanning and validation, e-commerce, and supporting operational workflows.

Software Developer Blueberry Software

I delivered most of Solar Band, a GPS hardware-asset tracking platform for construction companies built for HEC Solar.

I implemented much of the Vue.js frontend and Go backend, integrating the application with the hardware engineering team's MQTT broker and physical trackers.

Senior Full Stack Developer Codexio Ltd.

I worked across international client engagements including Axilion Smart Mobility, Paysafe, and GameAccount Network. For Axilion, I developed Java services for road-network and traffic-light data, SUMO simulations, virtual controllers, remote configuration, and observability infrastructure.

For Paysafe, I integrated Sportradar widgets into an Angular mobile WebView and designed a reusable Angular and TypeScript integration library. For GameAccount Network, I delivered loyalty and bonus functionality, administrative Angular work, and mentoring for interns and junior developers.

Java Software Developer Kaufland Service IT Hub

I started technical delivery as the first developer and established the initial Java and Spring Boot codebase and API foundation before the local team expanded.

I built Angular and backend functionality for vendor categorisation, performance analysis, spend visualisation, and Excel import/export using Spring Data REST, HATEOAS, Spring Security, Elasticsearch, PostgreSQL, and Azure.

Software Developer EPAM Systems

I joined as an intern for three months and continued as a Software Developer. I built the complete cross-platform BIODIT administration product using JavaFX and Spring Boot for Windows and macOS.

I integrated access-control devices through MQTT and a legacy database through ORM/JPA, resolved complex UI, persistence, and asynchronous device-workflow issues, and contributed to internal tooling.

Programming Tutor, Technical Consultant and Software Tester Independent / EATGLOBE

I built early C/C++, PHP, SQL, web, data-processing, and automation projects while providing technical consulting and private tutoring in programming, mathematics, and electrical-engineering subjects.

In 2014, I worked in Varna for food-discovery startup EATGLOBE as a software tester and data-entry/data-verification operator.

Education

Learning history

Technical University of Sofia

Programme not completed, Electrical Power Engineering and Electrical Equipment

Studied Electrical Power Engineering and Electrical Equipment. Programme not completed.

Technical University of Gabrovo

Programme not completed, Electrical Power Engineering and Electrical Equipment

Studied Electrical Power Engineering and Electrical Equipment. Programme not completed.

Acad. Ivan Gyuzelev High School of Mathematics and Natural Sciences

Secondary Education, Mathematics with English

Completed secondary education with a focus on mathematics and English.

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