As a Senior C++ Developer, you will play a key role in building and evolving software solutions used in a global, high-impact financial and payment systems environment. You will take ownership of your work and contribute to projects from concept to successful deployment. A strong focus of the role lies in leveraging modern technologies, especially AI-driven approaches, to continuously improve development processes and outcomes. Working in an international setup, you will collaborate closely with cross-functional teams and contribute to future-oriented engineering practices.

Requirements

Your tasks:

• AI-First Development Mindset: You have hands-on experience with AI coding assistants and use them as a part of a regular development workflow.
• AI-Supported Coding & Quality: You use AI to write, refactor, debug, and document code, and review all generated output for correctness, security, and maintainability before committing.
• Prompting & Context Management: You write clear, well-scoped prompts and provide the right context (existing code, constraints, requirements) to get useful results regardless of language or layer.
• Critical Evaluation: You critically evaluate AI suggestions rather than accepting them blindly spots, hallucinated APIs, insecure patterns, licensing issues, and subtly wrong logic.
• Efficiency & Adaptability: You use AI to work faster across unfamiliar code, languages, or frameworks, and to understand legacy or third-party code.
• Learning & Knowledge Sharing: You stay current as tools and workflows evolve and share effective practices with the team.

Your profile:

• Education & Experience: You have a technical degree or a comparable education and at least 5 years of experience in C++ development.
• AI Mindset: You have hands-on experience with AI-assisted development tools and use them daily as an integral part of your work, with a strong drive to integrate AI into your daily work.
• Tech-Stack: You are experienced with databases (e.g. MySQL) and modern development tools such as Jira or CI/CD pipelines.
• Technical Depth: You are comfortable working with complex or legacy systems (e.g. reverse engineering).
• Language Skills: You can easily communicate in English in our intercultural environment in any situation; German is an advantage.

Our values - One Team, Innovation & Transformation, Ownership, Entrepreneurship, and Empowerment - reflect your mindset as well? Then you're exactly right for us!

Benefits

• Hybrid Working: At epay, you will have a long-term, secure position in a globally operating company, with the option to partly work from home.
• Personal Development: We support your personal and professional growth through regular employee discussions and tailored development measures. In addition, we offer an e-learning platform and regular in-house training sessions.
• Benefits from Day One: You will have immediate access to our corporate benefits platform. We also subsidize your DeutschlandTicketJob as well as your EGYM WellPass membership.
• After the Probation Period: In addition to numerous employee discounts, you will gain access to the Employee Benefit Club, which provides a monthly shopping voucher worth €50. You can also lease a bicycle through the company with EuroRad.
• Work Environment: We place great value on mutual respect and treating each other as equals. Transparent, regular communication and an open corporate culture with strong team spirit are a given at epay.

epay

We are epay, and as an independent full-service payment provider, we offer our global partners a single-interface platform that allows them to stay completely flexible at any point in the ever-changing payment journey. Our sales network is one of the fastest-growing, with hundreds of innovative partners across numerous countries. In this way, we connect retailers, brands, and customers with scalable gift card, prepaid, payment, issuing, acquiring, and incentive solutions across all channels and borders.

Lets drive the payment journey of the future together!
We deliver highly advanced, secure and sustainable payment & incentive products and solutions that drive contribution to our partners and exceptional value to their customers.