Senior Developer

Position Overview

We’re hiring a Senior Backend Developer to join our growing engineering team in Poland.

You’ll be working on a modern, cloud-based identity platform, building scalable backend services that support real-world, high-security use cases.

You’ll join a strong, established team and play a key role as the platform continues to scale.

Key Responsibilities

• Design, develop and maintain secure back-end services using Java and Spring Boot
• Build and maintain RESTful APIs aligned to clean architecture and secure coding standards
• Own the design, development, testing, and documentation of backend services, ensuring scalable and maintainable solutions
• Translate functional requirements into technical solutions, working closely with Product Owners and Functional Analysts
• Identify gaps and drive improvements in system design, collaborating with Team Leads, Architects, and stakeholders
• Ensure high software quality through testing, code reviews, and engineering best practices
• Build and maintain reliable, high performance systems with a focus on scalability and resilience
• Enhance observability and monitoring to support production stability and troubleshooting
• Support platform maintenance, including security patching and dependency management
• Contribute to CI/CD pipelines and DevOps practices within a cloud-based environment
• Continuously develop your technical expertise and contribute to team knowledge

Tech stack

• Languages & Frameworks: Kotlin, Java (17/21), Python, Spring, Vert.x
• Databases & Data: PostgreSQL (AWS Aurora), Redis
• Cloud & AWS: KMS, S3, MSK, IAM, CloudWatch, ElastiCache, Route53, ELB, Shield Advanced, Cognito, WAF, API Gateway, OpenSearch
• Infrastructure & DevOps: Kubernetes (Amazon EKS), Docker, Istio, Helm, Terraform, ArgoCD
• CI/CD & Testing: Jenkins, JFrog, Robot Framework
• Observability & Monitoring: FluentBit, Fluentd, Logstash, Prometheus, Thanos, Grafana, Jaeger, Kiali
• Additional Tools & Platforms: Kafka, Kong API Gateway, Allegro Hermes, MinIO (on prem alternatives)

Company Overview

IDEMIA Public Security is a global leader in identity and security solutions. We work with governments and organisations worldwide to build safer environments through advanced biometric and digital identity technologies.

Our teams design and deliver high-impact platforms that power identity verification at scale, from border control to secure digital access