Senior Application Developer

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.

What we offer

• Global Relocation - (Relocation options; Experience in an international environment; Cross-cultural experience)

• Recognition and Evaluation - (Feedback culture; Regular appraisals)

• Time Off - (Annual holiday - 20 or 26 days. The duration of the leave depends on the overall seniority; Occasional leave - 1 or 2 days/ depending on the circumstances; Child care leave - 2 days or 16 hours per year; Absence due to force majeure - 2 days or 16 hours per year; Maternity Leave - 20 weeks; Parental Leave - 41 weeks; Paternity Leave - 14 days)

• Luxoft Training Center - (Expert-led tech courses covering basic to advanced topics; Internal instructor-led soft skills courses; Comprehensive in-house self-learning resources for both soft and hard skills; Access to external self-learning libraries like ProQuest eBook and Udemy for Business; Cloud Programs: MS Cloud Academy, AWS Partner Academy, Google Cloud Academy; Custom Learning Programs: upskilling, reskilling, technical mentorship; Leadership Programs for Managers)

• Well-being and Work-life Balance - (Multisport card; Possibility to order Multisport card at the corporate rate for family members; LuxGood Program: wellbeing seminars, contests, relaxation sessions, yoga sessions, etc.; One Team Program: Buddy for each New Joiner; seminars, meeting and workplace space to support integration with local community and culture; “Hire me” workshops for partners; Preferential banking offer; Preferential car leasing offer; Cafeteria program discounts for shops, cinema tickets, holiday offers; Luxoft Social Benefit Fund: sport and recreation benefits, the possibility to receive financial support)

• Health Care - (Private Healthcare Insurance with unlimited access to specialists; Full dental support; Travel Insurance; Possibility to add private healthcare coverage for family members at the corporate rate; Life insurance at the corporate rate for employees and family members, including payment of the basic package for the employee by the employer; Reimbursement for corrective glasses)

• Company Events and Friendly Environment - (Many fun social activities organized by the Luxoft team offline in your city; Online entertainment events for whole company and local team events; A workplace where you’re treated with respect within a multicultural team)

• Internal Mobility - (Rotation between projects and accounts; New career opportunities)

• Self-Learning Library

• CSR Projects

Other

• Languages: English: C1 Advanced

• Seniority: Senior

Requirements

• 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)

• 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

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