Senior Software Engineer

Senior Software Engineer Salary: 5500€-6500€ gross per month Apply We are looking for a Senior Software Engineer to join our cross-functional development team that builds, maintains, and improves scalable software solutions powering our products and operations. In this role, you will take part in the full development lifecycle, from design and development to quality assurance, release, and maintenance. You will also contribute to the creation of supporting tools and libraries, applying software engineering best practices and working closely with your teammates to deliver reliable, high-quality solutions. Core responsibilities Designing, developing, and maintaining complex software systems, delivering high-quality, scalable, and secure solutions with minimal oversight. Solving critical business and technical problems independently, ensuring reliability and performance at scale. Driving architectural discussions and collaborating on the design and implementation of large-scale technical changes. Taking ownership of the team’s development lifecycle, including dependency upgrades, security practices, codebase health and process improvements. Ensuring security and compliance standards are met across systems by proactively identifying risks and mitigating vulnerabilities. Providing guidance, mentorship, and technical leadership to junior and mid-level developers to foster growth and continuous improvement. Facilitating meetings and discussions with team members and business stakeholders, communicating effectively with both technical and non-technical colleagues. Contributing to and establishing software development policies and guidelines, while promoting best practices and continuous improvement. Applying the “scout rule” of leaving systems better than they were found and continuously pursuing technical excellence. Setting, owning, and delivering on strategic goals that support team and company objectives. Participating in the on-call rotation after the probationary period, including occasional evening or weekend responsibilities, depending on system needs. Experience and key competencies Strong professional experience in software development, with proven ability to design and deliver complex, large-scale solutions. Proficiency in at least one modern programming language, preferably JavaScript/TypeScript, and experience with multiple frameworks and tools. Solid knowledge of software architecture, design patterns, and system scalability best practices. Hands-on expertise in one or more core domains such as Kafka, PostgreSQL, Kubernetes, logging/monitoring, or error handling. Experience with event-driven and messaging systems (Kafka, RabbitMQ, Debezium) and performance optimization at both the application and system levels. Strong understanding of security principles, secure coding practices, and incident response. Ability to take ownership of the development lifecycle, including codebase health, dependencies, security, and documentation. Experience working directly with stakeholders to clarify requirements and propose technical solutions. Fluent in spoken and written English. Collaborative and approachable mindset, with strong communication skills for both technical and non-technical colleagues. Technical leadership and initiative, with the ability to mentor others and drive improvements across the team. Problem-solving focuses on long-term scalability, maintainability, and technical excellence. Curiosity and commitment to continuous learning and improvement. Coolbet operates in a highly regulated environment. This role requires a gaming license in any jurisdiction in which the company operates, and this position may require the ability to secure and maintain a license in all relevant jurisdictions. A gaming license application utilizes personal data, a criminal and credit check, and fingerprints. Coolbet will cover all costs and provide access to an Identity Protection program. Our Benefits, Your Happiness Enjoy 28 days of vacation with the option to use your balance on business days only, effectively giving you up to 10 extra days off. Combined with flexible working hours, you can make the most of your time off. Elevate your well-being with monthly sports/health compensation, full sick leave coverage for the first 8 days, our in-house gym, and a chill games room to unwind. Unlock a generous Supplemental Training Program that includes training and company-wide knowledge-sharing opportunities to fuel your growth. Our office is a cozy (and dog-friendly) haven right in the heart of the city. Enjoy complimentary fruits and beverages and free parking. It's the perfect place to be productive and feel right at home. Be part of the most legendary events and make amazing connections with colleagues from across the entire company. Comprehensive relocation support for a smooth transition. We foster innovation and independence while celebrating success in a multicultural and diverse company, where you'll work alongside people from around the globe. ..plus, if you're not already a pro, we'll teach you how to play poker! Recruitment flow Interview - Technical Interview - Background check - Offer Open to candidates based in the EU and eligible to work in Estonia. Applications are open until we find the one - take the leap and apply now! We do not discriminate on the basis of race, religion, color, ancestry, national origin, sex, sexual orientation, gender, gender identity or expression , age, disability, medical condition, pregnancy, marital status. Compensation At Coolbet, we carefully consider a wide range of factors when determining your salary, including market benchmarks, specific job family, background, location, skills, and experience. The typical range for this role is 5500€-6500€ gross per month. This reflects total compensation. Location Tallinn, Estonia Coolbet is an award-winning gaming company delivering both B2C and B2B platforms across international markets. We offer sportsbook, casino, and poker experiences to players in 8 countries across 3 continents and provide advanced B2B solutions to operators in the US. Part of the Sega Sammy Creation gaming segment, our core team of 500+ experts collaborates across borders to create world-class experiences for both players and operators. With a strong presence at our Tallinn HQ, home to a diverse team representing over 50 nationalities, we bring different perspectives together to shape the future of gaming through continuous product development, a collaborative culture, and a strong commitment to responsible play. Find out more about Coolbet! Department IT Locations Tallinn, Estonia Remote status Hybrid