Hybrid Backend Engineer

at Genestack

• Job title: Backend Engineer
• Job type: Full Time
• Experience level: Mid level, Senior
• Salary: Not specified
• Degree requirement: Bachelor's Degree
• Tech skills: Java, Kotlin, MySQL, Spring
• Location requirements: Hybrid, Belgrade, Serbia

About the role

• Backend Engineer at Genestack tackling bioinformatics challenges and working on high-load systems. Driving technical solutions and collaborating with engineers in a significant scientific domain.

Responsibilities

• Take end-to-end ownership of complex User Stories and actively contribute to feature analysis and solution design, from refining requirements to delivering production-ready solutions.
• Collaborate closely with backend engineers on system design and implementation, proactively proposing technical solutions and taking ownership of decisions within your scope.
• Contribute to the evolution of core backend components and APIs.
• Write clean, maintainable code and participate in refactoring initiatives.
• Optimize database queries and backend components for performance and scalability, and investigate performance bottlenecks in your areas of ownership.
• Break down complex tasks into pragmatic, deliverable increments.
• Proactively suggest backend and technical improvements that enhance product reliability, performance, and maintainability.
• Contribute to improving engineering practices and development processes.

Requirements

• 6+ years of experience in software engineering
• strong foundation in computer science (OOP, data structures, algorithms)
• solid experience with relational databases (e.g., MySQL)
• experience working with ClickHouse (writing and optimizing queries)
• strong proficiency in Java and/or Kotlin
• strong practical experience with Spring Framework in production systems
• hands-on experience writing automated tests (functional and integration)
• ability to independently drive complex User Stories to completion and make sound technical decisions within your scope
• strong practical use of AI tools to improve development efficiency and code quality, with readiness to share effective practices within the team
• strong communication skills and fluent English
• interest in life sciences or willingness to work in the domain

Benefits

• international team of professionals
• comfortable office in the very heart of the historical center of Belgrade
• opportunity to work 100% remotely
• medical insurance, fully paid sick leaves
• onboarding and domain training for newcomers
• flexible work schedule