Principal Engineer (Frontend)

Welcome to Kaizen GamingAt Kaizen Gaming, the driving force behind Betano, we rank among the world's leading GameTech companies, operating seamlessly across 19 diverse markets. Our mission is to harness the latest technological advancements to deliver unparalleled experiences to the millions of customers who rely on us for their entertainment.With a vibrant …

About the Role Entain is looking for a Senior Software Engineer with deep experience in Angular to help build and improve software that shapes our user experience. This position is based in Sofia. What You Will Do Develop and maintain Angular applications that support our products and services Work closely with engineers and designers to solve technical challenges Contribute to decisions that improve code quality and user experience Help deliver reliable, high-quality software in a collaborative environment Who We’re Looking For Strong background in Angular and front-end development Experience working on complex software projects Comfortable collaborating with cross-functional teams Motivated to make a real impact on products and users

About the Role SumUp’s Identity Lifecycle team manages the systems that control access to financial solutions for millions of small businesses worldwide. The focus: verifying every merchant accurately, efficiently, and in compliance with regulations. What You Will Do Lead the team responsible for identity verification across all SumUp markets. Oversee initiatives related to KYC (Know Your Customer) and adapt to diverse regulatory requirements. Guide the transformation of legacy systems into a platform that is adaptable, maintainable, and ready for regulatory changes. Influence architectural decisions for the future of verification at SumUp, drawing on technical leadership and engineering experience. Work closely with Product, Compliance, and Operations to build solutions that are practical, secure, and scalable from the start. Foster a team culture where engineers have support, guidance, and the freedom to own their work. Set and raise standards for designing, building, and operating verification systems. Location This position is based in Sofia, Bulgaria.

As part of the global technology organization TietoEVRY, MentorMate specializes in crafting robust technical solutions that facilitate large-scale digital transformation. Our approach integrates strategic insights, innovative design, and exceptional engineering to create advanced applications. With a strong foundation in enterprise web and mobile development, quality engineering, technical architecture, human-centered design, cloud computing, DevOps, data management, and analytics, we empower our team to engage in significant global projects for well-known brands. We appreciate every team member and celebrate our collective achievements through flexible work arrangements, competitive compensation and benefits, and excellent career advancement opportunities within our extensive international team.Role OverviewWe are in search of a skilled React Native Engineer to join our dynamic team and spearhead the development of high-quality mobile applications. You will be instrumental in designing and implementing scalable, efficient, and user-friendly mobile solutions utilizing React Native, with a strong focus on modern JavaScript (ES6+), state management, and clean architecture. This position is perfect for an individual who thrives in a collaborative atmosphere, enjoys tackling intricate challenges, and is dedicated to delivering impactful solutions.

Join Tieto Tech Consulting as a Senior Network Engineer specializing in Messaging. In this pivotal role, you will design, implement, and support advanced network systems to ensure seamless communication across various platforms. You will collaborate with cross-functional teams to enhance our messaging infrastructure, troubleshoot complex network issues, and develop innovative solutions that drive operational excellence.

Role Overview Tieto Tech Consulting is looking for a Senior Software Engineer in Test to join the team in Sofia. This role focuses on improving software development processes by building and maintaining testing frameworks. Collaboration with cross-functional teams is central to the work, with a shared goal of delivering high-quality software solutions. What You Will Do Design, implement, and maintain testing frameworks Work closely with teams across disciplines to support software quality Contribute ideas and solutions to improve how testing is done What Helps You Succeed Experience creating and maintaining test frameworks Strong problem-solving skills and a proactive mindset Interest in technology and quality assurance Location This position is based in Sofia.

Join our dynamic team as the Data Engineering Lead at Tieto Tech Consulting, where you will spearhead innovative data solutions and lead a talented group of engineers. This is an exciting opportunity to make a significant impact in our data-driven projects across various sectors.

As a key member of the global technology organization Tieto, MentorMate excels in crafting robust technical solutions that propel digital transformation. By merging strategic insights, innovative design, and exceptional engineering, we deliver impactful results on a grand scale. With established expertise in enterprise web and mobile development, quality engineering, technical architecture, human-centered design, cloud services, DevOps, data management, and analytics, our team is empowered to work on significant global projects for renowned brands.We are seeking a Senior FinOps Engineer to join our leading digital health solutions team within the health tech sector. This position emphasizes the monitoring, optimization, and enhancement of financial efficiency within AWS cloud environments while supporting critical CloudOps workflows. You will leverage cloud cost management, data-driven analysis, and hands-on AWS operations to promote sustainable and scalable cloud usage across the organization.

Join LivePerson, a leader in transforming customer care through innovative mobile messaging solutions. Our cloud-based platform, LiveEngage, empowers brands to engage with millions of customers and thousands of agents effectively. With 20 years of experience as a B2B SaaS company, we pride ourselves on fostering meaningful connections between brands and their customers.As a DevSecOps Engineer II, you will be instrumental in embedding security practices within our DevOps pipeline. Collaborating closely with development, operations, and security teams, you will help ensure that our applications and infrastructure are secure, scalable, and resilient. Your contributions will be vital in cultivating a proactive security culture throughout the organization.We are committed to providing you with an environment conducive to success, filled with complex and stimulating technical challenges.

As the landscape of payment processing continues to evolve, businesses seek dedicated and strategic partners to drive their growth.WE ARE NUVEI. We are a forward-thinking Canadian fintech company that empowers clients globally through innovative technology. Our modular, flexible, and scalable solutions enable leading businesses to accept cutting-edge payments, provide comprehensive payout options, and leverage services in card issuing, banking, risk, and fraud management. With operations in over 200 markets, local acquiring in 47 regions, and support for 150 currencies along with 586 alternative payment methods, Nuvei equips clients with the technology and insights necessary for success on both local and global stages through a single integration.At Nuvei, we embody our core values, thriving on the challenge of solving complex problems. Our commitment to continuous product improvement and exceptional customer service drives our search for outstanding talent to join our journey!The Role:The Implementation Engineer for API Products will play a pivotal role within the Technical Operations team, enhancing our daily operations. This position demands a comprehensive understanding of Nuvei's integration services and environment, as well as a deep expertise in our API products.The primary focus of the role is to develop and implement advanced technical solutions that facilitate product delivery and support the launch of new offerings. This involves conducting product validation and obtaining approvals to ensure an exceptional client experience throughout the integration process.Responsibilities:Gain extensive knowledge of all Nuvei API and integration products, including their functionality, features, and technical specifications, enabling the identification of deficiencies and fostering the development of new processes and enhancements to improve the client onboarding experience for both clients and Nuvei agents.Encourage innovation by not only maintaining existing systems but also promoting the adoption of new ideas, technologies, and best practices that bolster Nuvei’s competitive edge in the marketplace.In addition to supporting product delivery and new rollouts, the Implementation Engineer will conduct product sign-offs in the sandbox environment, assisting technical implementation and integration teams by providing critical support and insights to ensure effective operations.Deliver training sessions to empower support and customer-facing technical teams, enhancing their ability to serve clients. Contribute to the adoption of new technologies, tools, processes, and procedures aimed at continuously improving service quality.

WHO WE ARE:From our humble beginnings as a startup, we have transformed into a global fintech powerhouse, boasting a workforce of over 3,000 individuals from 80 diverse nationalities across 22 offices worldwide. Our rapid growth and diversification are unmatched.At SumUp, we empower businesses to receive payments effortlessly, manage orders swiftly, sell online seamlessly, and optimize their financial operations. Our mission is to equip businesses with the necessary tools to enhance both their operations and customer experiences.THE TEAM:Our advanced payments processing platform, which encompasses a variety of sub-platforms, has been the backbone of SumUp's global operations for more than a decade. A vital part of this platform is our Payouts team, dedicated to ensuring that our millions of merchants receive their payments reliably. This entire ecosystem is developed in Sofia by the Payments Tribe, consisting of several autonomous, cross-functional squads, each responsible for their segment of the platform from start to finish.We are currently in an exhilarating phase of scaling up and enhancing our existing products, while also innovating new solutions. Your contributions will be pivotal in refining and co-creating our existing and new microservices architecture, addressing complex scaling and development challenges where scalability and high availability are paramount.Join a team that prioritizes strong engineering principles and impactful solutions. You will play a significant role in the design and development of our new Java-based payout platform, utilizing cutting-edge technology to influence our product directly.OUR TECH STACK:Java (minimal setup, Spring Boot), Kafka Streams, PostgreSQL/RDBMS, RestEasy, VueJS.

About Man GroupMan Group is a leading global alternative investment management firm dedicated to delivering superior performance for our sophisticated clients through our Systematic, Discretionary, and Solutions offerings. Leveraging exceptional talent and cutting-edge technology, our investment strategies encompass both single and multi-manager approaches, supported by extensive research and spanning public and private markets across major asset classes, with a strong emphasis on alternatives. We prioritize building deep partnerships with our clients, creating customized solutions to achieve their investment objectives for the millions of retirees and savers they serve.Headquartered in London, we manage $227.6 billion* and operate in numerous offices worldwide. Man Group plc is publicly traded on the London Stock Exchange under the ticker EMG.LN and is part of the FTSE 250 Index. For additional information, please visit www.man.com.* As of 31 December 2025The TeamOur team is currently experiencing significant investment aimed at optimizing the trading capabilities across AHL, Numeric, and Discretionary teams. The engineering team collaborates closely with the Trading Desk and the Execution Research team to design, develop, and maintain a world-class trading capability. We operate trading floors in London, Hong Kong, Boston, and New York, managing over $8 trillion annually.We are consistently broadening the markets, asset classes, and regions in which we trade while also diversifying our trading styles. Our team is tasked with creating innovative and adaptable software and tools to keep pace with these changes.

Join Experian as a Senior Data Analytics Engineer in Sofia, where you will play a pivotal role in transforming data into actionable insights. You will collaborate with cross-functional teams to design and implement robust analytics solutions that drive strategic decisions and enhance business performance.

Join our dynamic team at SiteGround as a Senior Front-End Engineer, where you will play a pivotal role in shaping the user experience of our products. In this position, you will collaborate with designers and back-end developers to create visually appealing and highly functional web applications. Your expertise in modern JavaScript frameworks and responsiveness will be essential in delivering top-notch solutions. We are looking for a passionate engineer who thrives in a fast-paced environment and is dedicated to continuous improvement.

Join our dynamic team at AJWalter Aviation in Sofia as an Aircraft Repair Cost Engineer. Reporting to the Head of Technical Services, you will play a pivotal role within our Technical and Compliance Team, ensuring the highest standards of maintenance, repair, and overhaul (MRO) for aircraft components.As a Repair Cost Engineer, you will leverage your expertise to optimize repair costs while maintaining technical integrity. Collaborating closely with Value Engineers, Technical Services, Procurement, and external repair vendors, your responsibilities will include scrutinizing repair costs, evaluating technical and commercial data, and facilitating informed decisions regarding repair, replacement, and market value assessments.Key Responsibilities:Evaluate repair costs and deliver actionable commercial insights (repair vs replace, BER, market value).Assess supplier quotations, teardown results, and repair scopes thoroughly.Assist in cost modeling and should-cost analysis in collaboration with Value Engineering.Contribute to strategic decisions regarding repair, overhaul, scrap, exchange, and alternative sourcing.Analyze the effects of modifications, reliability trends, and repair process changes.Challenge supplier pricing and support negotiations with data-driven insights.Identify and implement opportunities for cost reduction and enhanced value outcomes.Participate in supplier performance evaluations and contract assessments.Monitor repair cost performance, pinpointing trends, risks, and discrepancies.Provide critical data and insights to support strategic decision-making.Drive process improvements and optimize the use of systems, data, and automation tools.

Join devexperts as a Senior Systems/Networks Engineer (Tier 3) where you will play a crucial role in managing and optimizing our network and systems infrastructure. You will be responsible for troubleshooting complex issues, implementing scalable solutions, and collaborating with cross-functional teams to enhance system performance and reliability.

Join tinqin as a Manual Quality Assurance Engineer and play a crucial role in ensuring the quality and performance of our software products. You will collaborate with our development teams to identify and resolve defects, ensuring that our solutions meet the highest standards of quality and user satisfaction.

Join Tietoevry as a Senior Messaging Engineer and play a pivotal role in delivering innovative messaging solutions that enhance communication systems. You will collaborate with cross-functional teams to design, implement, and maintain robust messaging frameworks that ensure seamless data flow and connectivity. Your expertise will be crucial in optimizing performance and reliability while adhering to best practices in software development.

Join our innovative team at CyberArk as a Software Engineer focusing on our Secrets Hub product. In this role, you will design, develop, and enhance features that safeguard sensitive information for our clients. You will collaborate with cross-functional teams to implement robust solutions and ensure high-quality standards in software development.

Join the Bosch Group as a Regional Field Aftersales Engineer in the Home Comfort Group (HVAC) sector, where you'll play a critical role in supporting our customers with exceptional service and technical expertise. In this position, you will engage directly with clients to address their needs, troubleshoot issues, and provide solutions that enhance their experience with our innovative HVAC products.