Principal Java Engineer

Who We Are

Recruitment.bg is a boutique IT recruitment company based in Bulgaria. We collaborate with some of the most reputable technology employers, connecting top engineering talent with outstanding career opportunities. Our focus is on understanding professionals’ ambitions, aligning them with meaningful roles, and providing continuous guidance throughout their career journey. Integrity, expertise, and trust are at the core of everything we do.

About the Role

We are seeking a highly experienced Principal Java Engineer to provide technical leadership and drive architectural excellence across a complex, large-scale platform. This role is ideal for a seasoned professional who combines hands-on technical depth with strategic vision — someone who thrives on designing scalable systems, mentoring engineering teams, and defining the long-term technology direction.

Responsibilities

Lead the design and development of high-performance, scalable, and secure Java-based applications and platforms

Define and evolve architectural standards, coding guidelines, and engineering best practices

Collaborate with product, architecture, and DevOps teams to align technology decisions with business objectives

Mentor and guide senior engineers, fostering a culture of innovation, quality, and technical ownership

Perform design and code reviews, ensuring clean, maintainable, and efficient code

Evaluate and implement new technologies, frameworks, and tools that enhance performance and productivity

Lead initiatives focused on scalability, reliability, distributed systems, and cloud-native architectures

Troubleshoot and resolve complex issues in production and development environments

Contribute to the overall technology strategy, influencing long-term product and infrastructure roadmaps

Requirements

• 10+ years of software engineering experience with deep expertise in Java (8/11/17+) and frameworks such as Spring, Spring Boot, Hibernate
• Proven experience designing and delivering large-scale, distributed, mission-critical systems
• Strong understanding of system architecture, microservices, API design, and event-driven architectures
• Solid knowledge of databases (SQL & NoSQL), caching strategies, and messaging systems (Kafka, RabbitMQ)
• Hands-on experience with cloud platforms (AWS, GCP, Azure) and containerization (Docker, Kubernetes)
• Excellent understanding of CI/CD, testing methodologies, and observability tools
• Strong analytical and problem-solving skills with the ability to resolve complex technical challenges
• Excellent leadership and communication skills, with the ability to influence cross-team architecture decisions

Nice to Have:

• Experience in iGaming, fintech, or other high-volume transactional systems
• Knowledge of Domain-Driven Design (DDD) and event sourcing
• Contributions to open-source projects or published technical articles
• Familiarity with front-end technologies (React, Angular)

What We Offer

Competitive salary

Annual performance-based bonus

Biannual performance review and salary evaluation

25 days paid annual leave

Hybrid work model (2 days per week from home)

Flexible working schedule

Premium additional health insurance package

Fully paid annual transportation and sports cards

Free company shuttle to the office

Participation in sports teams and corporate events

Opportunities for professional development and training

Tickets for conferences and seminars

Regular team building events and office parties

Free snacks, soft drinks, coffee, and fresh fruit daily

Bonuses for birthdays, newborns, and first graders

Corporate discounts across partner venues

Modern office with relaxation and gaming zones (PS4, foosball, lounge area)

All applications will be treated as strictly confidential.

Only short-listed candidates will be contacted.

[GV]