Software Engineer Performance

Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams.

• 5+ years of experience in Software Engineering, Performance Engineering, Site Reliability Engineering, or a related field.
• Hands-on experience with load testing, performance analysis, and scalability improvements.
• Strong analytical and problem-solving skills, including hypothesis creation, experiment design, metric definition, and result interpretation.
• Experience working with high-scale backend systems and distributed architectures.
• Strong programming skills in Java; experience with Scala, Go, Python, or TypeScript is considered an advantage.
• Experience with backend applications, messaging systems, asynchronous processing, reactive programming, and databases.
• Knowledge of Infrastructure as Code tools such as Terraform or Ansible.
• Experience with observability and monitoring solutions (e.g., Prometheus, ELK stack, APM tools).
• Familiarity with REST API load testing tools and frameworks.
• Experience with GitHub and CI/CD pipelines, including GitHub Actions.
• Understanding of Site Reliability Engineering (SRE) principles and practices.
• Experience working in Agile environments (Scrum, Kanban, SAFe, Pair Programming).
• Strong communication skills in English.
• German language skills are considered a plus.
• Curiosity, ownership mindset, and willingness to continuously learn new technologies and engineering practices.

• Analyze performance bottlenecks and identify root causes across distributed system components in high-load environments handling large volumes of traffic.
• Collaborate with development teams to continuously assess and improve platform performance.
• Design, develop, and execute load and performance tests in close cooperation with architects and engineering stakeholders.
• Evaluate existing and new platform components from a performance, scalability, and resilience perspective.
• Develop and maintain infrastructure dedicated to performance and load testing activities.
• Create, enhance, and maintain automated performance tests, reports, dashboards, and monitoring solutions.
• Support engineering teams in implementing performance best practices and optimization initiatives.