Back-End Developer
Join Kairostek and help build innovative technology solutions while working with talented professionals in a collaborative, growth-oriented environment.
We usually respond within a week
About Kairostek
At Kairostek, we believe great technology starts with great people.
We foster a culture of innovation, collaboration, and continuous growth, empowering our team to make a meaningful impact while building solutions that shape the future. Our teams work across software engineering, artificial intelligence, cloud infrastructure, cybersecurity, digital products, payments technology, and technology operations to deliver scalable and innovative solutions for global organizations.
If you are passionate about technology, problem-solving, and continuous learning, we would love to hear from you.
About the Role
As a Back-End Developer, you will work closely with Front-End Engineers, DevOps, QA, and Product Owners to develop reliable APIs, optimize system performance, and ensure seamless integration between microservices and client applications. You will be responsible for writing clean, maintainable code, improving architecture, and contributing to scalable backend solutions.
Key Responsibilities
Backend Architecture & Development: Design, build, and maintain server-side applications, APIs, and microservices. Develop high-performance, secure, and scalable RESTful/GraphQL endpoints. Implement efficient data processing workflows and integrate backend systems with external services, databases, and third-party APIs.
Database & Storage: Work with relational and non-relational databases (e.g., PostgreSQL, MySQL, MongoDB, Redis). Write optimized queries, contribute to database schema design, and implement caching, indexing, and data-retrieval optimizations.
Performance & Reliability: Optimize system performance, scalability, resource usage, and fault tolerance. Apply best practices for logging, monitoring, and alerting using tools like Grafana, Kibana, or Prometheus. Identify bottlenecks and implement improvements for uptime and reliability.
Security & Quality: Implement secure coding practices, input validation, authentication, and authorization mechanisms. Collaborate with QA to ensure proper test coverage, support automated testing, and participate in code reviews to uphold consistent engineering standards.
Delivery & Collaboration: Work closely with cross-functional teams including Product, DevOps, and Front-End. Participate in Agile ceremonies (standups, sprint planning, grooming, retrospectives) and contribute to CI/CD pipelines and deployment workflows.
Qualifications & Experience
5+ years of experience as a Back-End Developer
Strong knowledge of Node.js, Python, Java, Go, or another modern backend language
Experience building RESTful or GraphQL APIs
Strong understanding of microservices, distributed systems, and API-driven architecture
Familiarity with relational databases (PostgreSQL/MySQL) and NoSQL systems (MongoDB/Redis)
Experience with Git and modern development workflows
Understanding of containerization (Docker) and cloud concepts
Excellent analytical and problem-solving skills
PREFERRED SKILLS
Experience with message brokers (Kafka, RabbitMQ, AWS SQS)
Familiarity with container orchestration (Kubernetes)
Knowledge of CI/CD tools (GitLab CI, GitHub Actions, Jenkins)
Experience with authentication standards (JWT, OAuth2, SSO)
Understanding of event-driven architecture
Experience with high-traffic or real-time systems
What We Offer
Competitive compensation package.
Flexible and remote-friendly work environment.
Professional growth and development opportunities.
Exposure to international projects and teams.
Collaborative and inclusive company culture.
Opportunity to work with modern technologies and innovative solutions.
Equal Opportunity Employer
Kairostek is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We welcome applications from qualified candidates regardless of race, ethnicity, gender, age, disability, religion, sexual orientation, or background.
- Division
- Kairostek
- Department
- Software Development & AI
- Locations
- Limassol
- Remote status
- Hybrid
- Employment type
- Full-time
- Job Category
- Tech Job
About Kairostek
At Kairostek, we build technology that drives progress. From custom software and cloud infrastructure to strategic consulting, we help organizations innovate, grow, and succeed in a rapidly changing digital landscape. Join us and be part of building what's next.