Go Developer

Andersen is hiring a Go Developer in Denmark for a project modernizing payment infrastructure and delivering scalable, cloud-native solutions for high-volume transaction processing. The customer is a large international organization operating in the technology and services sector. It provides digital solutions and professional services to businesses and institutions across multiple markets, supporting operational improvement, technology adoption, data-driven decision-making, and implementation of complex business initiatives. The project is focused on supporting a large-scale issuer processing migration and modernizing payment infrastructure through scalable, cloud-native solutions. It includes high-volume transaction processing, API integrations, event-driven services, and migration activities, with a strong emphasis on reliability, scalability, and high availability. Responsibilities:

• Supporting a large-scale issuer processor migration program within the payments industry.
• Designing and implementing integrations between complex platforms.
• Developing and maintaining high-volume backend services using Go/Golang.
• Working with transaction processing systems, APIs, and event-driven architectures.
• Contributing to distributed systems and microservices-based solutions.
• Supporting integration activities across client and vendor platforms.
• Performing technical analysis related to migration and integration initiatives.
• Participating in testing activities throughout the programme lifecycle.
• Investigating and resolving technical issues arising during migration and integration phases.
• Working in cloud-native environments following modern engineering practices.
• Ensuring reliability and continuity of business-critical, high-availability systems.
• Collaborating closely with client and vendor teams throughout the migration programme lifecycle.

Must-haves:

• Senior-level backend engineering experience with strong expertise in Go / Golang for 3+ years.
• Proven experience designing, building, and integrating complex backend systems.
• Strong knowledge of distributed systems and microservices architecture.
• Hands-on experience with event-driven architectures and platforms such as Kafka.
• Strong experience in API design, backend integrations, and system-to-system communication.
• Experience supporting or delivering large-scale migration initiatives.
• Solid understanding of cloud-native environments and modern software engineering practices.
• Experience working with transaction processing systems and high-volume backend services.
• Experience building or supporting business-critical, high-availability systems.
• Relevant domain experience in card payments, issuer processing, banking, fintech, transaction switching, or payment infrastructure is highly desirable.
• Ability to collaborate effectively with client, vendor, and cross-functional engineering teams.
• Experience supporting technical analysis, integrations, testing, troubleshooting, issue. resolution, and migration activities throughout the programme lifecycle.
• Level of English – from Upper-Intermediate and above.

Reasons why this job would be interesting to you:

• Experience in teamwork with leaders in FinTech, Healthcare, Retail, Telecom, and others. Andersen cooperates with such businesses as Samsung, Siemens, Johnson & Johnson, BNP Paribas, Ryanair, Mercedes, TUI, Verivox, Allianz, T-Systems, etc..
• The opportunity to change the project and/or develop expertise in an interesting business domain.
• Guarantee of professional, financial, and career growth! The company has introduced systems of mentoring and adaptation for each new employee.
• The opportunity to earn up to an additional 1,000 EUR per month, depending on the level of expertise, which will be included in the annual bonus, by participating in the company's activities.
• Access to the corporate training portal, where the entire knowledge base of the company is collected and which is constantly updated.
• Bright corporate life (parties / pizza days / PlayStation / fruits / coffee / snacks / movies).
• Certification compensation (AWS, PMP, etc).
• Referral program.
• Private health insurance and sports compensation, depending on the type of employment.

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