C++ Developer

SD Worx; Katowice; On-site; PLN 120,000 - 180,000; Full time

Benefits offered by this job

Private medical care

Flexible working hours

Remote work opportunities

Cafeteria system

Lunch card Edenred

Remote work allowance

Employee loans

Workation (EU)

Life insurance

Holiday allowance

Language courses

Annual bonus

Integration events

Free parking

Referral program

Employee pension plan

Development opportunities

Job summary

SD Worx is seeking a C++ developer to join the eBlox payroll team, modernizing the core backend while preserving reliability. You will work on a mature codebase, refactoring for performance and scalability, with exposure to Belgium's payroll domain and collaboration across Belgium and Poland.

You'll engage with legacy systems, learn internal tools, and contribute to continuous improvement and agile delivery in a remote-friendly environment.

Qualifications

• 2–3 years of C++ development in complex software environments.
• Knowledge of STL, Boost, MFC libraries.
• Experience with document and relational databases like Btrieve and MS SQL.
• Degree in IT or equivalent experience.

Responsibilities

• Enhance, maintain and refactor our C++ system for high-volume payroll processing.
• Master specialized technologies and interfaces used by the product (Btrieve, MFC).
• Contribute across the full product lifecycle from idea to deployment and optimization.
• Bridge business requirements and technical solutions with stakeholders.
• Troubleshoot complex legacy code without direct customer contact.

Skills

C++ development

Self-learning

Autonomy

Clear communication

Agile mindset

English communication

Education

Degree in IT

Tools

Visual Studio

Azure DevOps

Jenkins

VTune

Btrieve

MS SQL

Job description

About SD Worx

SD Worx is a leading European provider of Payroll & HR services with global reach. We have offices across Europe and in Mauritius. Our purpose is to bring people solutions to life, enabling organisations of all sizes to turn Human Resources into a source of value for both the business and its people.

Our people solutions cover the entire employee journey - from getting people paid to attracting, rewarding and developing talent.

About the role:

Are you a C++ developer who gets genuinely excited when someone mentions stuff like "Btrieve" in 2025?

Then we're inviting you to strengthen our eBlox payroll team - the powerhouse behind Belgium's most popular payroll solution for mid-to-large organizations.

eBlox is a user-facing application, used by payroll professionals to manage their payroll processes.

We process over 500,000 payslips monthly, which means your code directly impacts half a million Belgian workers getting paid correctly and on time. No pressure!

What do we have to offer?

• Stable employment conditions: permanent employment contract (after a 3-month probation period)
• Flexible working hours and remote work opportunities
• Private medical care (LuxMed)
• Cafeteria system / Sportscard
• Lunch card (Edenred)
• Financial allowance for remote work
• Loans for employees
• Workation: possibility to work from any SD Worx location (4 weeks per year, EU only)
• Life insurance
• Holiday allowance
• Free language courses (during your working hours)
• Annual bonus
• Integration events
• Free parking spaces for employees
• Referral program
• PPK (Employee Capital Plans): 3.5% employer contribution
• Learning opportunities: through an individual development plan and professional training
• Career growth: whether you want to become more of an expert in your field or expand your knowledge horizontally, there's always room to grow within SD Worx!

Which tasks can you expect?

• Enhance, maintain and refactor our legendary C++ system: Work with a mature, battle-tested codebase that's been processing millions of payslips reliably for years
• Master our specialized technologies: You'll work with our optimized Btrieve databases and proven MFC interfaces that deliver durable performance for high-volume payroll processing
• Contribute across the full product lifecycle: From brilliant ideas to production deployment and ongoing optimizations
• Bridge business and tech: Work with our business experts to translate complex Belgian payroll requirements into elegant technical solutions
• Troubleshoot like a detective: Debug code that spans decades of development decisions (no direct customer contact required)

While our performance-optimized backend continues delivering rock-solid reliability, we're steadily modernizing our solution. We've already virtualized the GUI layer, giving users sleek web interfaces.

Now we're actively refactoring the backend - this is where you come in to help us modernize the core while preserving everything that makes it so dependable.

Essential Experience

• 2-3 years of C++ development in complex software environments
• Knowledge of libraries and frameworks such as STL, Boost, MFC
• Experience with document and relational databases like Btrieve and MS SQL
• Degree in IT or equivalent battle scars from the software trenches

Bonus Points

• If you've survived legacy modernization projects
• Familiarity with TDD, CI/CD (Azure DevOps, Jenkins, etc.) and Windows profiling tools like VTune
• Visual Studio mastery - Our primary IDE
• Python scripting - Automation is your friend
• Payroll domain knowledge - Understanding why Belgian tax calculations are... Special

We want someone with a "Can Do!" attitude who can

• Self-educate and adapt: Our codebase will teach you things they don't cover in university
• Work autonomously: You'll own your problems and solutions
• Communicate clearly: You'll be our beacon of trust in a complex and technical domain and explain technical decisions and report on progress to your team mates, your product owner and yes, also management
• Collaborate internationally: Our team spans Belgium (Antwerp) and Poland (Katowice), English is our lingua franca
• Embrace the agile mindset: Continuous learning, transparent feedback, and value delivery

Salary range information will be shared with candidates during the initial interaction with the Talent Acquisition team, either by phone or email.

Why Join SD Worx?

• Flexible working: Flexible working hours and remote/hybrid working options - working arrangements are open for discussion

• Learning & development: Access to professional training and an individual development plan

• Career growth: Whether you want to deepen your expertise or broaden your career, there is room to grow within SD Worx

• Collaborative culture: From many locations, we work as one - moving from better to best together

SD Worx values diversity and inclusion in the workplace. We welcome applications from all qualified candidates regardless of origin, nationality, gender, gender identity, sexual orientation, age, disability, religion, ethnic or social background, or stage of life.

All hiring decisions are made based on skills, experience and role-related qualifications.