You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Nikolay NikolovNN

Nikolay Nikolov

Freelance Software Architect & Engineering Lead

€700/day
Köln, DE
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
Back to original language

About Nikolay

Freelance Software Architect and Engineering Lead with over 20 years of experience in backend software development.

Primary stack: PHP/Symfony — built multiple systems independently from scratch to live operation. Java through further training and project collaboration (SpringBoot, OOP); Python: ML project with CatBoost and Flask.

Consistently work AI-assisted — with 20 years of experience as a software developer, I know no hard boundaries in programming languages.

Architecture focus: Clean Architecture, Domain-Driven Design (DDD), Process-Driven Design with Camunda (BPMN), Microservices, Modular Monoliths.

Setup and maintenance of complete software delivery pipelines: CI/CD (GitHub, GitLab), automated testing, release cycles, staging and production environments, fully dockerized developer environments. AWS, Observability (ELK Stack, Datadog, Grafana, Jaeger).

Five years of operational leadership of engineering teams up to 30 employees.

Deeply rooted in the German energy industry: E.ON, EnBW, EWE — Energy Billing, MaKo, powercloud, chargecloud/E-Mobility.

Remote-first.
  • German

    Native or bilingual

  • English

    Fluent

  • Bulgarian

    Native or bilingual

Can work on-site
Köln (up to 50km)

Experience

  • Hansen Technologies Germany
    Manager Software Development
    ENERGY AND UTILITIES
    April 2025 - Today (1 year and 4 months)
    Offenburg, Germany
    Following the acquisition of the powercloud division from CONUTI by Hansen Technologies (2025): Responsibility for modernization initiatives of a large energy billing platform serving leading German utility companies and millions of end customers.

    Strategy & Transformation

    Definition and management of the modernization roadmap: Transformation of a legacy monolith into a modular, process-driven architecture (Camunda).

    Establishment of organization-wide architecture standards (DDD, Clean Architecture) across multiple engineering teams.

    Responsibility for technical strategy and long-term system development of an enterprise platform for Germany's leading energy providers.

    AI Integration & Innovation

    Building expertise in AI-assisted engineering and embedding it within the development organization.

    Conception of internal guidelines for the integration of AI tools into the software development lifecycle.

    Initiatives to increase developer productivity, code quality, and delivery capability.

    Leadership & Mentoring

    Coaching of engineers and tech leads on architecture, code quality, and modern engineering practices.

    Fostering a culture of ownership, technical excellence, and continuous improvement across distributed teams.
    Team management CI/CD Process driven development Camunda PHP/MySQL
  • CONUTI GmbH — Energy & Utilities Consulting
    Head of Software Development (functional) / Principal Software Engineer
    ENERGY AND UTILITIES
    August 2023 - March 2025 (1 year and 7 months)
    Karlsruhe, Germany
    Cross-functional Responsibility & Standardization

    Functional leadership of the entire software development organization: technical steering across multiple parallel enterprise projects.

    Definition and rollout of standardized development processes, engineering guidelines, and review practices across all teams.

    Establishment of organization-wide standards for architecture, code quality, and delivery.

    Cross-team initiatives (Developer Community) to improve knowledge sharing and consistency across product squads.
    Strategic

    E.ON Engagement

    Responsibility for the software architecture of the powercloud deployment at E.ON, one of Germany's largest energy providers.

    Acting as a senior technical bridge between Engineering, Tribe Leadership, Product Management, and the Customer Organization.

    Steering technical community initiatives across the entire engagement.

    Platform Contributions

    Architectural contribution to the MaKo App, which has established itself as a successful product in the German energy market. Introduction of process-driven development with Camunda → higher, faster incident response and increased operational efficiency across all engineering projects.

    Hiring & Onboarding

    Participation in interviews, technical assessments, and onboarding of senior engineers and tech leads.
    Team management Camunda MaKo PHP Microservices
  • CONUTI GmbH — Energy & Utilities Consulting
    Principal Software Engineer
    ENERGY AND UTILITIES
    March 2022 - July 2023 (1 year and 4 months)
    Karlsruhe, Germany
    Contributions to the further development of existing software systems in the energy sector.

    Identification of structural gaps in processes, documentation, and system consistency; initiation and support of remediation.

    Initiative for improvements in code quality, structure, and cross-team collaboration.

    Promotion shortly after joining due to high technical and organizational impact.
    Team management PHP/MySQL Camunda Energy industry Microservices architecture

Recommendations

Be the first to recommend Nikolay

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • Computer Science Studies
    Rheinische Friedrich-Wilhelms-Universität Bonn
    2004
    Informatik-Studium
  • DNLA Success Profile Social Competence
    2024
    DNLA Erfolgsprofil Soziale Kompetenz

Skill set

Categories