Senior Golang Developer

15 hours ago

Belgrade, Central Serbia Unlimit Full time €60,000 - €120,000 per year
About Unlimit Founded in 2009, Unlimit is a global fintech company with 16 offices worldwide and more than 500 employees, offering a comprehensive portfolio of financial services—from acquiring (payment processing) to banking-as-a-service. Our mission is to be "ready for tomorrow," providing our customers with stability in the ever-changing financial landscape and empowering them to seize opportunities ahead of the curve. While others observe, our customers take the lead.

About the Role We're looking for a Senior Golang Developer (Blockchain) to help us build the next generation of payment solutions, combining blockchain innovation with AI-powered development.
In this role, AI tools and copilots are part of your daily work — helping you with coding, testing, and optimization. You'll create systems that connect traditional payment rails with decentralized blockchain protocols, ensuring fast and secure transactions.
What You'll Do
- Design and develop blockchain-based payment applications using Go and microservices. - Work with AI copilots and automation tools to speed up development and improve code quality. - Build solutions that connect payment processors with blockchain networks. - Use AI-driven analytics to improve transaction speed and reliability. - Collaborate with engineers, product managers, and compliance teams to deliver new features.

At Unlimit, AI isn't just a tool — it's part of how we build. It helps our engineers focus on creativity and problem-solving, while automation handles repetitive work. Key Responsibilities:
  • Architect, build, and evolve high-performance blockchain-enabled payment applications, using AI copilots and agents to accelerate design, coding, and testing.
  • Create seamless bridges between traditional financial systems and decentralized protocols, ensuring transactions flow smoothly across rails with minimal latency.
  • Drive architectural decisions in collaboration with the team, applying AI-assisted modeling and analysis to validate scalability, security, and performance.
  • Continuously refine and optimize our systems by leveraging AI-driven monitoring, anomaly detection, and performance tuning.
  • Integrate emerging blockchain frameworks and smart contract designs, pairing them with AI automation to shorten development cycles.
  • Champion code quality and security by embedding AI-powered testing, static analysis, and vulnerability scanning into the development workflow.
  • Stay ahead of the curve through ongoing research into both blockchain innovations and AI development tools, ensuring our platform remains at the industry forefront.
Requirements:
  • Nearly 6 years of professional software development experience, with a proven track record of building high-quality, scalable applications.
  • 3-5 years of hands-on experience building applications that interact with blockchain technologies (e.g., smart contracts, nodes, wallets, and explorers).
  • 2 years of experience developing with Go (Golang) in a professional environment.
  • A strong understanding of microservice architecture and experience designing, developing, and debugging RESTful web services.
  • Solid knowledge of traditional and blockchain-based payment flows and financial systems.
  • Comfortable and proficient in building software with the assistance of AI agents or AI copilots.
  • You are a proactive problem-solver who takes initiative, thrives on complex challenges, and is dedicated to delivering exceptional results.
  • Ability to communicate effectively in English, collaborating with both technical and non-technical stakeholders to achieve shared goals.
Join Unlimit Team now
Unlimit is an equal opportunity employer. We believe passionately that employing a diverse workforce is central to our success. We make recruiting decisions based on your experience and skills. We welcome applications from all members of society irrespective of age, sex, disability, sexual orientation, race, religion or belief. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

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