Backend Engineer

BACKENDdistanceREMOTE
• BELGRADE OR NOVI SADCONTRACT Backend Engineer We are looking for a Backend Engineer to help architect and build our platform from the ground up. The focus is API request optimization and database performance — designing efficient service APIs, tuning PostgreSQL schemas and queries, and scaling event-driven systems with Kafka on AWS. We care about strong backend fundamentals more than any single language: our services are mostly Go and Python, and we are happy for you to pick up Go on the job. PythonPostgreSQLAWSKafkaGoLangDockerKubernetesTerraformArgo CD bolt Ready to apply? We typically respond within 24 hours. Apply nowarrow_forward Apply via email recruitment@qbitech.iomail Contact Questions? Reach out directly. Jefimija jefimija@qbitech.io Responsibilities
• check_circle API Performance Design and optimize service APIs — request paths, latency, throughput, and reliability
• check_circle Database Optimization Tune PostgreSQL schemas, queries, indexes, and data models for performance at scale
• check_circle Service Development Build and maintain backend services (the stack is primarily Go and Python)
• check_circle Architecture Work with event-driven systems and message queues (specifically Kafka)
• check_circle Cloud Operations Manage and scale infrastructure within AWS
• check_circle Team Collaboration Participate in code reviews and help set the standard for development practices and CI/CD processes shieldRequirements
•

Location:
based in Belgrade or Novi Sad, Serbia
• 3–5 years of professional backend development experience
• Strong backend fundamentals in any modern server-side language — Go experience is welcome but not required
• API Design: Proven experience designing and optimizing high-performance APIs
• Database

Skills:
Strong PostgreSQL — schema design, query tuning, and optimization
• AWS Expertise: Hands-on experience with cloud architecture and deployment
• Communication: Strong analytical and written communication skills for a collaborative environment star_halfNice to have
• Experience with Docker, Kubernetes, or Terraform
• Familiarity with Fintech / Financial Services industry standards
• Knowledge of Microservices and CI/CD tools (like ArgoCD)
• Experience with security best practices and cloud monitoring/logging What will be your next steps? 01chat_bubble Quick non-technical conversation Our initial conversation is a brief, non-technical discussion to understand your background and career aspirations. We're keen to learn about your communication style and how you approach teamwork and decision-making. 02code 60 to 90 minutes technical interview This in-depth technical assessment, lasting 60 to 90 minutes, is designed to evaluate your specific skills and expertise. We will present you with challenges relevant to our client’s requirements. 03groups Client interview In this stage, you will meet directly with the client for a final technical discussion. This interview will be similar in format to our internal technical assessment, allowing the client to see firsthand how your expertise aligns with their specific project needs and team. 04workspace_premium Offer Congratulations on successfully completing our evaluation process. We are pleased to extend an offer and recommend you to our clients. Apply for this role Fill in your details below. We'll get back to you shortly. Full name
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