Senior Java Developer

  • Location: Sofia
  • Term: Permanent Position
  • Net monthly salary: €2300 - €4300
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Job description

Waracle are looking for a Senior Developer for an exciting new role joining our world-class digital technology consultancy and home to a diverse, smart, curious and ambitious community of specialists in technology-driven transformation.

We work with ambitious clients to help them solve their biggest business and customer challenges. We help our clients to innovate and create intelligent digital products and services. We thrive on complex  challenges and deliver business-critical IT transformation projects, moving seamlessly from strategy, design and delivery to operations.

This is a Hybrid role working from our Sofia office 2 days a week

As a Senior Java Developer, you will do so much more than just write code; you will be a vital technical mentor, a collaborator, and a guardian of software quality. You will have the creative freedom to design and deliver end-to-end backend features and subsystems that are modular, scalable, and secure.

We know that great technology is built by supported, collaborative teams. If you enjoy uplifting others through constructive feedback, sharing knowledge, and balancing technical excellence with real-world delivery, you will find a highly rewarding home here

In this role, you will report to the Lead Developer and impact our projects across several key areas:

  • Architectural Delivery: Designing and delivering end-to-end backend subsystems while ensuring code remains modular, maintainable, and scalable.
  • Quality & Security: Act as a champion for software excellence by conducting thoughtful peer reviews and applying defensive measures for robust application security.
  • Technical Guidance: Shaping our testing strategies across unit and service levels while introducing innovative industry ideas to the practice.
  • Consulting & Communication: Translating complex technical trade-offs into clear, inclusive language for clients and stakeholders, presenting confident product demonstrations.
  • Mentorship & Practice Growth: Nurturing the growth of junior colleagues through supportive coaching , while contributing lessons learned to Waracle’s collective body of knowledge.
  • Delivery Accountability: Thoughtfully evaluating the trade-offs between speed and quality, taking collaborative ownership of successful feature delivery.

What you'll bring

  • 3+ years of experience working with Java.
  • Deep expertise in backend architectures, specifically with microservices and event-based systems.
  • A strong understanding of industry-standard security (OWASP) and compliance (such as GDPR or SOC2).
  • Proven capability in optimising application performance, including query tuning, caching, and threading.
  • A collaborative approach to testing, with the ability to guide testing strategies across multiple levels.
  • Excellent communication skills, with a passion for mentoring others and building an inclusive engineering culture.

Recruitment process

The Recruitment Process

The recruitment process you can expect for this role is an initial call with your dedicated Talent Attraction Partner and an engineer from our technical panel who will chat with you about Waracle, what you are looking for in a new position, the salary for the role, notice period and benefits (the important stuff!). It’s also a great opportunity for us to get a high-level overview of your technical background.

After that, you’ll be invited to a interview process where you have an opportunity to find out more about the role and showcase your skills and experience. Your Talent Attraction Partner will guide you through the whole process to your first day with us.

Our Benefits

We believe in supporting our team, inside and outside of work. Here's a glimpse of what you can expect:

Additional health insurance – comprehensive supplementary coverage beyond the mandatory social insurance, provided by one of Bulgaria’s leading insurance companies.

Sports cards (Multisport / CoolFit) – access to a wide range of sports and wellness facilities across the country.

We champion hybrid working, providing a home office setup budget to ensure you're comfortable and productive wherever you are.

Invest in yourself with access to Udemy Business and a dedicated learning and development budget for continuous growth.

We foster a vibrant culture with regular fun meet-ups and lunch on us in the office once a month. You'll also have the opportunity to make a local impact through Spirit of Waracle, our initiative for getting involved in charitable causes locally, building strong team bonds and giving back.

Our values

To make the world a better place through impactful software

We take pride in delivering high quality work and seeing the impact it has. We are curious, proactive, and always learning; continuously improving ourselves and our skills. We strive for excellence in everything we do. We see every opportunity as a chance to raise the bar - for Waracle, our clients, and for our own professional growth.

We succeed together: whether we’re leading, supporting or learning. We lead with empathy, working as a unified team to understand and appreciate other people’s perspectives and experiences. This commitment to one another empowers everyone to do their best work and reach their full potential. We build trust, celebrate every contribution, and create a space where everyone has the opportunity to shine.

We have big goals, but we don’t try to do everything. We know there are a limited number of hours in a day, so we make every one of them count. We accomplish this by regularly pausing to assess the potential impact of our work, prioritising what matters most and then acting with purpose.

We are transparent in how we think and act. We seek and share context, give and accept feedback, and communicate openly. We take full ownership of what we deliver as individuals and as a team, and hold ourselves accountable. This openness and accountability gives us the clarity and purpose to deliver at our best.

We love what we do and find the fun in each day, celebrating our shared successes and the satisfaction of doing hard work well. We’re in this together, creating space for connection, laughter, and fun. When we look after our clients and each other, and do work we’re proud of, we go home happy.

Frequently-asked questions

Here are some of the things that people tend to ask about working at Waracle.

Absolutely! At Waracle, we welcome both permanent and contract applicants. Each job posting indicates if it's open to contract applications. We offer a diverse range of projects, both within and outside IR35 regulations, catering to various preferences and expertise levels.

We work on a Hybrid working model and offer flexible working hours. We're spread across 4 vibrant UK offices, but our teamwork isn't confined to those spaces, it's all about collaboration! While using the office is encouraged for our teams to work together, each of us has a home office setup, relishing the freedom of hybrid workstyles. As of now, remote work outside the UK isn't part of our standard practice.

We always want to hear from talented people, join our talent pool 👇 and we'll contact you when a new opportunity becomes available.

Equal Opportunities

We are an equal opportunities employer and welcome applications from all suitably qualified persons regardless of their race, gender, disability, religion/belief, sexual orientation or age.

We are not accepting applications from recruitment agencies.

Feel like a good fit?

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