Senior Backend Software Engineer

4 Months ago • 5 Years + • Backend Development

Job Summary

Job Description

EveryMatrix seeks a Senior Backend Software Engineer in Zagreb to architect and build scalable, reliable, high-performance backend systems using Node.js microservices. Responsibilities include designing, implementing, and maintaining these services; collaborating with product, front-end, and DevOps teams; leading small engineering teams; writing clean, well-tested code; mentoring junior developers; and troubleshooting production issues. The role requires significant experience with Node.js, databases (PostgreSQL, MySQL, MongoDB), building scalable systems and RESTful APIs, and strong system design principles.
Must have:
  • 5+ years software development experience (1+ year senior role)
  • Strong Node.js proficiency
  • Database experience (PostgreSQL, MySQL, MongoDB)
  • Scalable system & microservices expertise
  • RESTful API design
  • Advanced English skills
Good to have:
  • Real-time monitoring (Prometheus, Grafana)
  • Event-driven architecture/message queues (Kafka, RabbitMQ)
Perks:
  • Hybrid work schedule
  • Sliding work schedule
  • 23+ annual leave days
  • 10 paid sick leave days
  • Paid parental leave
  • Monthly meal allowance
  • Paid personal days
  • Private health insurance
  • Access to online learning platforms
  • In-house English course
  • Multisport card
  • Travel expenses
  • Bonuses

Job Details

About us:

EveryMatrix is a leading B2B SaaS provider delivering iGaming software, content and services. We provide casino, sports betting, platform and payments, and affiliate management to 200 customers worldwide.

But that's not all! We're not just about numbers, we're about people. With a team of over 1000 passionate individuals spread across twelve countries in Europe, Asia, and the US, we're all united by our love for innovation and teamwork.

Join us on this exciting journey as we continue to redefine the iGaming landscape, one groundbreaking solution at a time.

Zagreb office is part of OddsMatrix, which empowers clients to unleash bold ideas and deliver outstanding player experiences. For over a decade, we have offered tailored B2B sports betting solutions for every market. Featured services include turnkey betting software (online, retail and omnichannel), real-time sports data APIs and data feeds.

We are looking for a passionate and dedicated Senior Backend Software Engineer to join our team in Zagreb, Croatia!

What you'll get to do:

  • Architect and build scalable, reliable, and high-performance backend systems.
  • Design, implement, and maintain Node.js microservices.
  • Work closely with product managers, front-end engineers, and DevOps teams to deliver end-to-end solutions.
  • Take ownership of technical projects and lead a small team of engineers.
  • Write clean, maintainable, and well-tested code.
  • Mentor junior developers and conduct code reviews.
  • Troubleshoot and resolve complex production issues.

What You need to shine:

  • 5+ years of experience in software development, with at least 1 year in a senior/lead role.
  • Strong proficiency in Node.js.
  • University technical degree.
  • Solid experience with databases (PostgreSQL, MySQL, MongoDB, etc.).
  • Expertise in building scalable systems, microservices, and designing RESTful APIs.
  • Advanced English skills in speaking and writing.
  • Strong knowledge of system design principles and software architecture.
  • Bonus points if you are familiar with the following:
    • Real-time monitoring systems and tools (Prometheus, Grafana).
    • Experience with event-driven architecture or message queues (e.g., Kafka, RabbitMQ).

Here's what we offer:

  • A starting salary from 4.000 EUR (gross/brutto1).
  • Hybrid work schedule: 60% work from the office and 40% work from home per quarter (during your first 3 months, you'll be in the office full-time).
  • Sliding work schedule (start anytime between 8:00 to 10:00 am).
  • Start with 23 days of annual leave, with 2 additional days added each year, up to 33 days by your fifth year with us.
  • Stay Healthy: 100% paid 10 sick leave days per year, no doctor's note required.
  • Support for New Parents:
    • 21 weeks of paid maternity leave, with the flexibility to work from home full-time until your child turns 1 year old.
    • 4 weeks of paternity leave, plus the flexibility to work from home full-time until your child is 13 weeks old.
  • Our office perks include parking, on-site massages, and frequent team-building activities in various locations.

Benefits & Perks:

  • Monthly meal allowance.
  • Paid Personal Days for specific life events, including but not limited to childbirth, wedding, relocation, blood donation, and volunteering.
  • Private health insurance and an extended health plan – Wiener; annual medical checks at the Aviva polyclinic.
  • Access online learning platforms like Udemy for Business, LinkedIn Learning or O’Reilly and a budget for external training.
  • In-house English course and presentation skills training.
  • Multisport card.
  • Travel expenses – depending on the place of residence.
  • Easter, Christmas, summer and referral bonuses.

At EveryMatrix, we're committed to creating a supportive and inclusive workplace where you can thrive both personally and professionally. Come join us and experience the difference!

EveryMatrix is a member of the World Lottery Association (WLA) and European Lotteries Association. In September 2023 it became the first iGaming supplier to receive WLA Safer Gambling Certification. EveryMatrix is proud of its commitment to safer gambling and player protection whilst producing market leading gaming solutions.

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