I’m a backend-focused software engineer from Finland with 5+ years of professional C#/.NET experience and additional hands-on development across distributed enterprise systems. I enjoy working on REST APIs, SQL Server and Azure, and building reliable integrations for agile teams across Europe. Across my roles, I’ve contributed to ASP.NET Core and ASP.NET APIs, implemented automated integration and regression testing, and worked on process and deployment-related safety and orchestration tasks. I also have experience mentoring junior developers, performing code reviews, and supporting production systems—often in international Scrum environments where clear communication and continuous improvement matter.

Jozsef Krizsan

I’m a backend-focused software engineer from Finland with 5+ years of professional C#/.NET experience and additional hands-on development across distributed enterprise systems. I enjoy working on REST APIs, SQL Server and Azure, and building reliable integrations for agile teams across Europe. Across my roles, I’ve contributed to ASP.NET Core and ASP.NET APIs, implemented automated integration and regression testing, and worked on process and deployment-related safety and orchestration tasks. I also have experience mentoring junior developers, performing code reviews, and supporting production systems—often in international Scrum environments where clear communication and continuous improvement matter.

Available to hire

I’m a backend-focused software engineer from Finland with 5+ years of professional C#/.NET experience and additional hands-on development across distributed enterprise systems. I enjoy working on REST APIs, SQL Server and Azure, and building reliable integrations for agile teams across Europe.

Across my roles, I’ve contributed to ASP.NET Core and ASP.NET APIs, implemented automated integration and regression testing, and worked on process and deployment-related safety and orchestration tasks. I also have experience mentoring junior developers, performing code reviews, and supporting production systems—often in international Scrum environments where clear communication and continuous improvement matter.

See more

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
See more

Language

Hungarian
Fluent
English
Advanced
Finnish
Intermediate

Work Experience

Backend Developer at Psyche's Royale Gaming
February 1, 2025 - January 1, 2026
Built REST APIs and backend services using TypeScript and Node.js, working with MongoDB for data persistence. Contributed to backend code quality through code reviews and engineering collaboration.
Backend Developer (Volunteer/Project) at Psyche's Royale Gaming
February 1, 2025 - January 1, 2026
Developed features using TypeScript and Node.js REST APIs. Built API and database interactions with MongoDB and performed code reviews. (Project details: from the resume dates and stack summary.)
Back-end Developer at Psyche's Royale Gaming
February 1, 2025 - January 1, 2026
Back-end development using TypeScript and Node.js. Designed and implemented REST API services. Worked with MongoDB and conducted code reviews. Authored contributions using AALT/O (Dec 2024–Oct 2025) described in resume as software engineering with LLMs; also included OP CUA server C# implementations noted.
Advanced Application Engineer at P&P MES projects (within role context)
September 1, 2024 - December 31, 2024
Responsible for process safety analysis, deployment work, and integration with other enterprise systems in P&P MES initiatives, including work with C# and Perl as part of integration and operational tooling.
Senior Software Engineer at Accenture Hungary
September 1, 2024 - December 31, 2024
Owned development of an enterprise TIA portal using the .NET framework. Improved daily meeting processes by implementing automation and reduced manual regression testing through automated integration tests by a significant margin. Advanced application engineering responsibilities including process safety analysis, deployment, and integration with other systems and P&P MES projects, using technologies such as C# and Perl for operational needs.
Software Engineer at LUT (Lahti or project org; details from resume)
September 1, 2024 - December 1, 2024
Software engineering work using C#/.NET and Agile methodologies for process safety related projects.
Advanced Application Engineer / Senior Software Engineer (TBD) at Evosoft Hungary
September 1, 2024 - December 1, 2024
Worked on Process Safety Analyzer (PSA) configuration and integration with other systems across Oil & Gas projects. Delivered C#/.NET and Agile-methodology contributions, focused on configuration, integrations, and reliable system behavior.
Advanced Application Engineer at Evosoft Hungary
September 1, 2024 - December 31, 2024
Worked on Process Safety Analyzer (PSA) configuration and integration with external systems. Developed and maintained C#/.NET solutions and integrations with other systems for P&P MES projects (Optimization, C#, Perl).
NET Developer / Software Engineer at Honeywell
August 1, 2023 - February 1, 2026
Implemented OPC UA servers using C# for customer projects. Worked on WinFMS/Delphi-related projects and provided engineering support via freelancing.
Software Engineer at Honeywell (Camline & / or PCUA server projects)
August 1, 2023 - February 1, 2026
Implemented OPC UA server features in C# and contributed to server-side development and integration tasks. Worked across platforms and supported related software development and ongoing improvements.
Senior Software Engineer at Honeywell
August 1, 2023 - February 1, 2026
C# server implementations and OCUA server work. Worked on server-side backend development using C# and related technologies; also supported related systems and integrations.
Backend Developer at Finland / Remote (B2B contract assignments)
April 1, 2022 - July 1, 2023
Freelance/contract backend development available across Europe, delivering C#, .NET, ASP.NET Core, REST APIs, SQL, Azure backend development, API integration, and enterprise systems work.
Freelance Software Developer at Freelancing (Relocation to Finland)
April 1, 2022 - July 1, 2023
Freelance back-end/software development work while relocating to Finland. (Specific client/project details not provided in the resume.)
Freelancer / Relocation to Finland at Freelance
April 1, 2022 - July 1, 2023
Freelancing and relocation period (Finland).
Senior Analyst / Application Development at Accenture Hungary
March 1, 2021 - March 1, 2022
Worked in an international Scrum team building and refining ASP.NET MVC client-facing functionality and related back-office ASP.NET Core APIs for client WinForms workflows (DevExpress). Developed standalone tools, mentored junior developers and new team members, and contributed to technical refinements and training content for enterprise applications.
Senior Analyst / Software Developer at Accenture Hungary
March 1, 2021 - March 1, 2022
Developed and supported ASP.NET MVC/ASP.NET Core-based solutions for an international scrum team, including WinForms client integration. Worked on API stand-alone tools, documentation, and technical refinement. Mentored team members and participated in client-facing delivery and day-to-day development activities.
Application Development Senior Analyst at Accenture Hungary
March 1, 2021 - March 1, 2022
.NET MVC thin client and WinForms (DevExpress) back-office application development. Worked on ASP.NET MVC and ASP.NET Core API standalone tools, developed integrations, and mentored technical refinement and documentation. Also supported RUANDER Training Center by contributing to platform-related work and collaboration within Scrum teams.
Freelance .NET Developer
August 1, 2020 - February 1, 2021
Senior Software Engineer at Evosoft Hungary
August 1, 2020 - February 1, 2021
Responsible for TIAP portal development using .NET framework. Improved daily meeting processes, implemented automated integration tests to reduce manual regression testing, and contributed to advanced application engineering and configuration/integration with external systems. Worked on C# with cross-system collaboration including optimization work.
Full Stack Developer at Evosoft Hungary
August 1, 2020 - February 1, 2021
T.I.A.P portal work using .NET framework with unit and integration tests. Implemented improvements to the daily meeting process. Contributed to configuration, integrations, and integration with other systems for P&P MES projects, including optimization tasks using C# and Perl; also worked on Oil & Gas projects. (September–December 2024) on C#/.NET with Agile methodology.
General IT / Developer (Backend / maintenance) at Lamia OY
March 1, 2020 - May 1, 2020
Backend development during a study-time period; specific details not provided in the resume.
Software Engineer at Evosoft Hungary Kft
May 1, 2017 - April 1, 2019
Worked on production and testing activities for enterprise applications, including automation of complex cross-functional and safety test cases. Integrated .NET modules into VBA/.NET testing frameworks and supported development and user assistance for in-house WCF/WPF applications, including data migration and CRM replacement efforts.
Software Engineer at Evosoft Hungary
May 1, 2017 - April 1, 2019
Worked on data migration and supported users. Developed and fixed features and bugs using ASP.NET Web Forms/MVC and SSRS reporting. Collaborated with scrum teams while replacing a CRM system during the project.
Software Engineer at Accenture Hungary
May 1, 2017 - April 1, 2019
CRM system replacement work during a Scrum team transition: replaced CRM system with a new approach. Worked on data migration and user support. (Additional duties described in resume across internal tooling and delivery support.)
Web Developer / Software Engineer at Evosoft Hungary Kft
May 1, 2016 - April 1, 2017
Took responsibility across the software life cycle: supported users, fixed bugs, and developed new features. Contributed to ASP.NET Web Forms/MVC development and supported SSRS reports and CRM/data migration work.
Software Engineer at Evosoft Hungary
May 1, 2016 - April 1, 2017
Worked on TIA portal and related products (including S7/Starter/S210/S1200 variants). Performed test automation, implemented complex cross-functional and safety test cases, and integrated .NET modules with a VBA/VBA.NET test framework. Side project: in-house WCF/WPF application development and user support using C#, VBA/VBA.NET, TFS, ClearCase, and DevOps.
Software Engineer (Product & Test Automation) at Evosoft Informatik a Zrt. / Siemens Motion Control (TAP portal, S7/S210/S120... mentioned)
March 1, 2016 - April 1, 2017
Developed and maintained products including TIAP portal components and test automation. Ran and implemented complex cross-functional safety test cases, integrating .NET modules with VBA/VBA.NET test frameworks. Provided in-house WCF/WPF application development and user support using C# and VBA.NET and maintained related DevOps/SDD tooling.
Developer (Digital Arts / rendering support) at Digital Apes
August 1, 2015 - May 1, 2016
Supported 2D/3D artists and helped build/maintain rendering and related services. (Specific stack not provided beyond general tool descriptions.)
Web Developer (General IT / Data / Admin support, Part-time) at Ruangder (studies + support; same time project)
January 1, 2015 - May 1, 2016
Supported 2D/3D artists. Built Linux and Windows clones, managed licensing services, maintained the render farm, and wrote Python scripts for maintenance. Also worked on C++/wxWidgets pipeline tools and general IT/admin tasks.
Researcher and Developer at RUA NDER Training Center
January 1, 2015 - January 1, 2016
Back-end development and C#/software development work, including unit and stress testing. Refactoring and development using C# and related technologies; worked on computer vision and IMU sensor calibration data processing and parameter fine tuning. Also authored/maintained technical documentation.
C# Developer / Researcher and Developer at Dolphio Technologies (within role context)
March 1, 2013 - July 1, 2015
Implemented unit and stress tests and performed refactoring using C# while working with technology stacks including ASP.NET-related components.
C# Developer / Software Engineer at Evosoft Informatik a Zrt.
March 1, 2013 - July 1, 2015
Developed unit and stress tests, performed refactoring using Delphi technologies. Contributed to quality and maintainability improvements in legacy/enterprise tooling.
Research and Developer (intern) at RUANDER Training Center
March 1, 2013 - July 1, 2015
Work described as research and development: computer vision, IMU sensor calibration, data processing, and parameter fine tuning. Programming using Python and C# as part of documentation and data processing tasks.

Education

Master of Physics at University of Debrecen
January 1, 2010 - January 1, 2016
Bachelor of Physics at University of Debrecen
January 1, 2007 - January 1, 2010
Master of Physics at University of Debrecen
January 1, 2010 - January 1, 2016
Bachelor of Physics at University of Debrecen
January 1, 2007 - January 1, 2010
Master of Physics at University of Debrecen
January 1, 2010 - January 1, 2016
Bachelor of Physics at University of Debrecen
January 1, 2007 - January 1, 2010

Qualifications

Azure Developer Associate
December 1, 2021 - July 13, 2026
Azure Fundamentals
August 1, 2021 - July 13, 2026
ISTQB Foundation Level
December 1, 2017 - July 13, 2026
Azure Fundamentals (AZ-900) - ISTQB (as listed)
December 1, 2017 - August 9, 2026
Azure Developer Associate (as listed)
December 1, 2021 - August 9, 2026
Azure Developer Associate
December 1, 2021 - September 3, 2026
Azure Fundamentals
August 1, 2021 - September 3, 2026
Foundation Level (ISTQB)
December 1, 2017 - September 3, 2026

Industry Experience

Software & Internet, Computers & Electronics, Professional Services, Energy & Utilities, Manufacturing, Financial Services, Media & Entertainment, Other

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
See more