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, proven experience working with certificates and encryption mechanisms, and the ability to design and deliver scalable, secure, and high-performance applications in modern cloud-native environments.
As a senior member of the team, you will play a key role in system architecture, technical decision-making, mentoring junior developers, and ensuring best practices in application security and reliability.
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
MUST
Required Skills & Experience
Core Technical Skills
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
Security & Certificate Management
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)
NICE TO HAVEExperience with major cloud platforms (AWS, Azure, or GCP)
Knowledge of Infrastructure as Code tools (Terraform, Helm)
Familiarity with security standards and frameworks (OWASP, NIST)
Experience with observability tools (Prometheus, Grafana, ELK)
Background in distributed systems and event-driven architectures
Luxoft DXC
2000
Luxoft, a DXC Technology Company is a global digital strategy and software engineering firm with over 17,000 international employees within its 58 offices in 29 countries. It is headquartered in Zug, Switzerland.
In January 2019, Luxoft was acquired by U.S. company DXC Technology. Luxoft partnered with LG Electronics to create a next-generation Autonomous Mobility concept vehicle that integrates consumers' personalized digital lifestyles into a driving experience. Luxoft enabled Switzerland's first Blockchain based e-vote platform with the City of Zug and Hochschule Luzern's Blockchain Lab.
Luxoft, a DXC Technology Company is a world-renowned company. It has been present on the Polish market for over 13 years. We have offices in Krakow, Warsaw, Wroclaw, and Gdansk. We employ over 2,000 professional experts carrying out projects for over 100 clients from the financial, automotive, medical, tourist industries, etc. We work for many international clients, including the USA, Great Britain, and Switzerland.
So far, Luxoft Poland has made a name for itself as a company that offers work on innovative projects, we offer various experiences in the field of IT, opportunities for rapid development, an extensive training program, and attractive benefits for employees.
At present, 62% of Luxoft Poland employees come from Poland, and 38% from around 50 countries, including Ukraine, Brazil, India, Turkey, Spain, Portugal, Italy, Romania, USA, etc.
At Luxoft, a DXC Technology Company almost 80 percent of employees are experts with the "Senior" experience level, with at least five years of experience. We care about our employees, so every day we try to provide them with the best possible conditions for work and development.
Technology is our passion! We focus on top engineering talent means that you will be working with the best industry professionals from around the world. Because of that, Luxoft is a global family with an epic atmosphere – we love what we do!