Senior Backend Software Engineer | Mobile Fulfilment | Hybrid

Join Our Innovative Team as a Senior Backend Software Engineer! The Mobile Fulfilment Systems team at Ocado Group is pioneering state-of-the-art automation solutions for in-store and warehouse online order fulfilment. We harness the power of distributed backend systems, user-friendly mobile applications, and advanced autonomous robots to facilitate rapid, sc…

About the Role Ocado Group’s Mobile Fulfilment Systems team in Sofia, Bulgaria builds automation technology for online order fulfilment in retail and warehouse settings. The group combines distributed backend systems, mobile apps, and autonomous mobile robots to support rapid, scalable, and cost-effective order processing. This position sits within the In-Store Fulfilment (ISF) division. The team focuses on designing and developing cloud-based systems, progressive web apps, and web technologies that automate online order fulfilment at scale. About In-Store Fulfilment (ISF) ISF is a cloud-based platform that helps retailers efficiently fulfil online orders, improve the customer experience, and reduce operational costs. The system is live in over 1,000 stores across 11 countries and 4 continents. Each week, it manages more than 300,000 customer orders, covering every stage from routing and cubing to picking, buffering, loading, and dispatching. What You Will Do Architect, develop, and maintain large-scale distributed systems with high availability. Lead technical projects from initial planning through design and delivery. Apply best practices in testing, code quality, monitoring, and alerting to ensure reliable solutions. Shape the long-term architectural and product direction for the team. Integrate AI tools such as Claude Code, Gemini, and others into backend systems. AI and Engineering Focus AI is already part of the software development process at Ocado. The team is growing its AI capabilities and welcomes backend engineers with hands-on experience or a strong interest in AI. This role offers the chance to advance AI initiatives while contributing to core engineering projects.

Welcome to Kaizen Gaming!At Kaizen Gaming, the driving force behind Betano, we stand as one of the leading GameTech companies globally, operating across 19 dynamic markets. Our commitment is to harness the latest technological advancements, delivering unparalleled experiences to millions of customers who rely on us for their entertainment.With a vibrant team of over 2,700 Kaizeners from more than 40 nationalities across three continents, we embrace diversity and innovation.Proudly recognized among the Best Workplaces in Europe and certified as a Great Place to Work, we promise that every day here is unique and filled with potential. Are you ready to Press Play on your career?About the Role:As a Lead Principal Backend Engineer, you will be pivotal in designing and evolving high-performance, scalable backend systems. We seek a technical expert who excels in leadership and mentorship, guiding engineers at all levels. Your expertise will drive the development of our robust software solutions while collaborating with cross-functional teams to achieve excellence.Your Responsibilities Include:Architecting & Innovating: Partner with our agile team to create scalable, secure, and high-performing backend systems that power our innovative solutions.Code Craftsmanship: Write clean and efficient code that serves as the backbone of our technology stack.Mentorship: Inspire and mentor fellow tech leaders, fostering skill development and the adoption of best practices.Performance Optimization: Spearhead initiatives to identify and enhance system performance, ensuring seamless user experiences.Integration Collaboration: Work closely with cross-functional teams to guarantee smooth system integration.Tech Trendsetter: Stay ahead of technological trends, applying emerging technologies to augment our capabilities and disrupt the industry.Best Practices Advocate: Collaborate with Principal Engineers to establish company-wide best practices and foundational software development processes.Strategic Vision: Define and concentrate on the technical roadmap, aligning it with the company's long-term goals beyond immediate business needs.

Location: Sofia OfficeCompany: LivePerson Inc. About LivePerson LivePerson Inc. (NASDAQ: LPSN) helps leading brands connect with consumers through its Conversational Cloud platform. Companies such as HSBC, Chipotle, and Virgin Media use LivePerson to facilitate millions of interactions every month. The platform supports nearly a billion conversational exchanges monthly, using extensive datasets and advanced safety features to improve customer experience with Conversational AI. Role Overview The Senior Support Engineer serves as a technical expert for customers in the EMEA region. This role focuses on resolving complex technical issues, mentoring teammates, and acting as a bridge between customers and internal product teams. What You Will Do Address advanced technical concerns from customers across the EMEA region. Diagnose and resolve complex problems for global clients, aiming for high customer satisfaction. Take ownership of escalated support cases and resolve advanced technical challenges. Develop subject matter expertise in specific technical areas or platform features, and work with product developers to improve support tools and troubleshooting methods. Act as the main support liaison between customers, Product Management, Engineering/R&D, and other business units. Share customer feedback with development and service teams to address recurring issues. Mentor and train team members to handle technical escalations, reducing the need for further escalation. Analyze pain points and recurring issues, and help refine processes and requirements for better support tools and solutions. Lead or contribute to internal projects within the Support organization.

Ocadogroup is hiring a Senior Software Engineer in Sofia, Bulgaria. This position focuses on designing, developing, and implementing software solutions that support the company’s business goals. Role overview The Senior Software Engineer will work closely with colleagues from different teams to build and deliver products that align with customer needs. The role involves hands-on development and active participation in the full software lifecycle, from concept to deployment. What you will do Create and refine software designs to address business challenges Develop, test, and implement new features and applications Collaborate with cross-functional teams to ensure product quality Requirements Experience designing and building software solutions Ability to work collaboratively with colleagues from various disciplines Strong interest in technology and delivering results that make a difference

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.

Sutherland is on the lookout for an insightful and results-driven Technical Project Manager to spearhead client launches. Join our dedicated team of professionals, where your expertise in infrastructure project management and client onboarding will be pivotal to our success.Key Responsibilities:Lead multiple project activities for onboarding major clients and transitioning existing clients to new products and services.Demonstrate strong organizational, facilitation, and leadership skills to meet both client and Sutherland standards.Manage procurement processes and utilize tools such as Ariba.Employ project management software and collaboration tools like Smartsheet, SharePoint, and Webex.Bring expertise in Networking (VPN, Connectivity, Access Control), IVR, Telecom, and associated technologies.Desired Skills:Experience in BPO infrastructure and technology operations is highly preferred.In-depth knowledge of Genesys Platforms or similar technologies is essential.Experience with Coral Active or equivalent universal agent desktop solutions, and familiarity with WebRTC is advantageous.Proficient in deploying Cisco UCCE (Unified Contact Center Enterprise) and its components.Knowledge of OCI, Azure, Google Cloud, GKE, or related technologies is a plus.Project Management Duties:Ensure effective communication throughout all project phases.Manage IT, Telecom, and Development teams to fulfill voice, omnichannel, and data requirements.Identify, assess, and mitigate project risks while addressing issues as they arise.Document and fulfill specific requirements for new product launches and manage significant change requests.Create operational contingency plans for programs and assist the business development team in expanding accounts.Maintain a zero-client escalation rate by establishing regular meeting cadences and collaboration efforts.Prepare and present relevant project documentation and presentations.

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.