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Luxoft Poland
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BackendSenior

Senior Application Developer

Go (Golang)JavaDockerKubernetesPodmanVmwareKvmHyper-VREST APIMicroservicesLinuxUnixGitSSL/TLSPkiX.509 CertificatesKeystoresTruststoresOAuthJWTMtls
Work Type
Hybrid
Job Type
-
Location
Worldwide
Salary
Not specified

About the Position

We are seeking a Senior Application Developer with extensive experience in Go (Golang), Java, virtualized environments, and containerization technologies. The ideal candidate will bring a strong security-first mindset and proven experience working with certificates and encryption mechanisms.

Responsibilities

  • Design, develop, and maintain secure, scalable backend applications using Go (Golang) and Java
  • Lead the development of containerized microservices using Docker and Kubernetes
  • Build and optimize applications running on virtualized platforms
  • Implement and manage application-level security, including authentication, authorization, and secure communication
  • Work extensively with TLS, SSL certificates, keystores, truststores, and certificate lifecycle management
  • Ensure secure handling of secrets, keys, and credentials
  • Collaborate with DevOps, Cloud, and Security teams to integrate solutions into CI/CD pipelines
  • Conduct code reviews, mentor junior developers, and promote coding best practices
  • Troubleshoot complex production issues in distributed systems
  • Contribute to architectural designs, technical roadmaps, and security reviews
  • Ensure compliance with security and regulatory standards where applicable

Requirements

  • Strong hands-on experience with Go (Golang) and Java (5+ years total development experience preferred)
  • Deep experience with containerization and orchestration: Docker / Podman, Kubernetes / OpenShift
  • Solid understanding of virtualization technologies (VMware, KVM, Hyper-V)
  • Proven experience developing RESTful APIs and microservices architectures
  • Strong knowledge of Linux/Unix-based systems
  • Experience with Git and modern CI/CD pipelines
  • Strong experience with application security principles
  • Hands-on experience with: TLS/SSL certificates, PKI, X.509 certificates, keystores and truststores (e.g., JKS, PKCS12)
  • Understanding of secure communication protocols and encryption
  • Experience implementing authentication and authorization mechanisms (OAuth2, JWT, mTLS)
  • Familiarity with secure secret management tools (e.g., vault-based systems)

Benefits

  • Copyrights which means higher net salary for Developers
  • Stable employment based on an employment contract
  • LuxMed health & dental care
  • Life insurance, Travel insurance
  • MyBenefit program (sports card, well-being program etc.)
  • Employee assistance program for you and your family! (consultations with a psychologist, coaching sessions, assistance in private life)
  • Car rental
  • LuxTalent platform (webinars, training, courses with certificates)
  • Internal Mobility program - possibility of rotation between projects, locations, accounts
  • ...and even more!
Senior Application Developer