Senior Go Engineer

Ciklum is looking for a Senior Go Engineer to join our team full-time in Poland.

Weare a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live.

As a Senior Go Engineer, become a part of a cross-functional development team engineering experiences of tomorrow.

Our Client is a cybersecurity company that secures private cellular (solo) networks used by large enterprises, including Fortune 100 companies. Its platform provides purpose-built security and operational visibility for isolated cellular networks that traditional security solutions cannot protect.

Join our talented R&D team to create groundbreaking products in a rapidly growing market. You'll collaborate closely with the Client’s product team to develop and implement innovative features from conception to deployment. As a key contributor, you'll build and maintain our core product offering, ensuring scalability, performance, and stability.

• Design, develop, and maintain backend services written in Go as part of a large-scale cybersecurity product
• Work on an event-driven backend architecture, leveraging message brokers (e.g. Kafka / NATS)
• Implement and optimise Go concurrency mechanisms (go routines, channels, synchronisation primitives)
• Build scalable, reliable services running on Kubernetes-based infrastructure
• Own code quality end-to-end: design, implementation, testing, and production readiness
• Collaborate within a cross-functional squad (backend, frontend, QA, Dev Ops as enablers)
• Contribute to a long‑term product codebase
• Follow and help shape engineering standards and best practices under the guidance of Tech Leads
• Participate in technical discussions, reviews, and architectural decisions within the team

• 3+ years of experience developing backend systems
• Strong knowledge, experience, and proficiency with Go programming language
• Extensive experience with large-scale databases (Postgre
  
  SQL, Neo4j)
• Familiarity with microservices architecture and cloud design patterns
• Broad knowledge of container ecosystem and orchestration tools (Docker, Kubernetes)
• Experience with AWS cloud services
• Proficiency in REST API, gRPC, message brokers (Kafka/NATS), and server‑side API integration
• Background in cybersecurity, Linux, and networking

• Strong community:
  Work alongside top professionals in a friendly, open‑door environment
• Growth focus:
  Take on large‑scale projects with a global impact and expand your expertise
• Tailored learning:
  Boost your skills with internal events (meetups, conferences, workshops), Udemy access, language courses, and company‑paid certifications
• Endless opportunities:
  Explore diverse domains through internal mobility, finding the best fit to gain hands‑on experience with cutting‑edge technologies
• Flexibility:
  Enjoy flexibility – full remote working possibilities
• Care:
  We’ve got you covered with company‑paid medical insurance, mental health support, and financial & legal consultations

At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting‑edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress.
With delivery centers in Wrocław and Gdańsk, our 300+ professionals in Poland drive forward‑thinking solutions for global clients. Join a community where collaboration sparks innovation—and your impact reaches millions.

Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum.