Senior Application Developer

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Our Benefits:

💰Paid Referrals

💻Equipment: laptop and monitor

🩺Private Medical & Dental care & Life Insurance covered

🏋🏽 ♀️ MyBenefit program (sports card, well-being program etc.

🌎 Internal Mobility program - possibility of rotation between projects, locations, accounts

🎓 LuxTalent platform (webinars, training, courses)

...and more!

Project Description:

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.

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

Mandatory Skills Description:

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-Have Skills Description:

Experience 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

Languages:

English: B2 Upper Intermediate