Senior Software Engineer, Golang - Payments Platform

SumUp is hiring a Senior Software Engineer with deep Golang expertise to join the Payments Platform team in Sofia, Bulgaria. This team develops and enhances scalable payment solutions that form the foundation of SumUp’s core products. Key responsibilities Work closely with fellow engineers to design and implement features for the Payments Platform Write, review, and maintain high-quality Go code Focus on improving the platform’s performance and reliability Contribute to technical decisions that impact the future direction of payments at SumUp Requirements Professional experience working with Golang Proven background in building scalable backend systems Interest in payments technology and a commitment to platform reliability Strong collaboration and communication abilities

Role overview SumUp is hiring a Software Engineer with solid experience in Golang to join the team in Sofia, Bulgaria. This position centers on building and maintaining online payment solutions that help businesses worldwide process transactions reliably. What you will do Design, develop, and maintain payment services using Golang Collaborate with engineering, product, and design teams Enhance existing systems to improve performance and reliability Implement new features that support user experience and system efficiency Team culture SumUp engineers work together across disciplines to deliver payment products for a global audience. The team values practical approaches and prioritizes solutions that make a real difference for users.

SumUp’s Payments Tribe develops tools that make transactions easier for small businesses. The team in Sofia, Bulgaria, is searching for a Junior Backend Engineer with experience in Golang to help build and maintain these payment solutions. What you will do Collaborate with engineers to develop and maintain backend services using Golang Contribute to new features that support payment processing for users worldwide Assist in improving the reliability and usability of payment systems Role impact This position supports SumUp’s mission to simplify payments for small businesses and enhance the experience for users globally.

Mirantis seeks a Senior Software Engineer in Sofia with deep experience in Golang. This role centers on building and maintaining scalable software that meets client needs and supports business efficiency. Key responsibilities Design, develop, and support software solutions using Golang Collaborate with colleagues from various disciplines to deliver dependable, high-quality products Contribute to projects aimed at improving processes and serving client requirements What helps people thrive here Strong problem-solving skills and a drive to tackle complex technical challenges A commitment to writing clean, maintainable code Effective collaboration and communication with cross-functional teams

At SumUp, we champion the everyday heroes—those with the courage and determination to pursue their passions and realize their dreams.We place small business owners at the center of our mission, crafting powerful and user-friendly financial solutions designed to empower them in managing their businesses. With a founder's mentality and a collaborative, 'team-first' spirit, our diverse teams across Europe, South America, and the United States unite to ensure that small business owners can thrive in their endeavors.About the TeamThe Payments Reporting team is integral to SumUp’s financial infrastructure, developing systems that millions of merchants depend on daily to reconcile, report, and make sense of their finances. We are currently on an exciting journey to build a reporting platform that accommodates both external integrators and internal teams at scale, delivering functionalities from file-based exports to real-time API reporting. This role has emerged due to our ambitious growth outpacing the capacity of our current team of three backend engineers, and we need someone who can take significant ownership of complex backend tasks, allowing the team to accelerate critical architectural improvements.What You Will DoDevelop and maintain backend reporting features, including Payout Reports, Payment Reports, Fee Invoices, and Transaction Reports.Design and manage Reporting APIs (like Transaction History and Payout History) that cater to both external integrators and internal stakeholders.Lead the migration of core payments functionality from legacy systems, modernizing the infrastructure that supports our reporting platform.Ensure the operational health of reporting services through effective monitoring, incident response, and performance optimization.Actively engage in planning and refinement sessions, providing technical assessments and effort estimations.Mentor junior engineers through code reviews, collaborative sessions, and knowledge sharing.

Join SumUp as a Backend Engineer specializing in Go within our Payments Experience team. In this role, you will be instrumental in building and optimizing backend services that power our payment solutions. You will collaborate with cross-functional teams to enhance user experience and ensure seamless transactions.

About the Role Dev.Pro is looking for a Senior Software Engineer / Team Lead to guide a cross-functional team focused on advancing a high-throughput payment orchestration platform. This remote position is based in Sofia, Sofia City Province, Bulgaria. What You Will Do Lead a delivery team, setting priorities and maintaining clear direction in partnership with client stakeholders. Combine hands-on software development with team leadership responsibilities. Drive the implementation of key features from concept through release. Clarify complex requirements and help the team navigate ambiguity. Foster open communication and collaboration within the team. About Dev.Pro Dev.Pro builds technology solutions used by millions worldwide. The company values diversity and inclusion, recognizing and supporting the unique strengths of every team member.

Join our dynamic team at Sutherland as a Senior Platform Automation Engineer. In this role, you will be at the forefront of enhancing our automation capabilities, driving efficiency, and ensuring seamless operations across our platforms.Your expertise in automation tools and methodologies will be crucial in optimizing our processes and delivering exceptional results. Collaborate with cross-functional teams to design, implement, and maintain robust automation frameworks that support our business objectives.

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

At Yotpo, we're at the forefront of revolutionizing trust and loyalty in eCommerce. Our AI-driven Reviews and Loyalty solutions empower brands to transform casual browsers into loyal customers and advocates. With deep integrations across the eCommerce landscape and the backing of over 30,000 global brands, Yotpo offers seamless omnichannel experiences that enhance conversion rates, strengthen customer relationships, and foster sustainable growth.As we innovate Yotpo's next-generation platform, we are also investigating how artificial intelligence can create smarter, more personalized eCommerce experiences. If you're passionate about leveraging AI technology alongside modern engineering practices, this position offers a unique opportunity to make a significant impact.In this role, you will be instrumental in developing and refining our platform, ensuring it is reliable, scalable, and serves as a robust foundation for subsequent product lines. You will face complex challenges, including constructing critical applications capable of efficiently managing large datasets and high data volumes.

Role Overview Lifted An Upwork Company is hiring a Senior Web Software Engineer in Sofia. This position focuses on building and maintaining web applications that meet high standards for quality and user experience. The role involves hands-on design, implementation, and ongoing support of web projects. What You Will Do Design and develop web applications from concept through deployment Implement features that improve usability and performance Maintain and update existing web solutions as requirements evolve Collaborate closely with team members to deliver reliable results What We Look For Strong experience with web development technologies Commitment to writing clean, maintainable code Ability to work well with others and share knowledge Focus on delivering a smooth, effective user experience

LucidLink develops cloud-based solutions that allow teams to access data securely from anywhere. The platform is built for handling large files and extensive data sets, offering a user experience similar to a local hard drive. Founded by storage industry veterans in 2016, LucidLink enables real-time collaboration for creative organizations, including major names in media and entertainment. The company operates from San Francisco and maintains an engineering office in Sofia, Bulgaria, serving customers in over 40 countries. Role overview The Senior Fullstack Software Engineer position is based in LucidLink’s Sofia office. This role centers on building and improving the platform that supports instant, secure data access and real-time collaboration. The work directly affects how teams worldwide manage and share large-scale content. What you will do Work on technical challenges that shape global collaboration, especially in media and entertainment. Contribute to a platform designed for performance, security, and ease of use with massive data sets. Collaborate with a team of over 230 professionals, where individual input quickly influences product direction. What we value Integrity, innovation, and empathy in daily work and team interactions. Commitment to personal growth and learning as the company expands. Supportive culture that encourages advancement and open communication. Benefits Flexible paid time off Competitive salary Stock options Health coverage

At SumUp, we recognize that small businesses are the driving force behind Europe's economy. Our mission has always centered around empowering these businesses to flourish. We are now embarking on an exciting new venture: a stablecoin designed to ensure payments are instant, cost-effective, and fully compliant with regulations.This is a unique opportunity to contribute to a product that sits at the convergence of fintech, cryptocurrency, and regulatory compliance, supported by a profitable organization that serves over 4 million merchants across 35+ markets.What’s the opportunity?We are seeking a Senior Backend Engineer who is passionate about building innovative solutions from the ground up. This role is ideal for someone who thrives in fast-paced environments and desires to enhance their technical skills in a high-impact field. You will collaborate closely with our Staff Engineer and cross-functional teams to bring our stablecoin project to fruition.This newly created position is pivotal for a high-priority project. It entails a dynamic, complex environment filled with learning opportunities, perfect for an individual who enjoys tackling challenging problems and delivering high-quality code.Your responsibilities will include:Building from the ground up: Participate in technical discovery and MVP development for SURO, coding daily in Kotlin or Go.Designing reliable systems: Assist in creating high-SLA, service-oriented systems that integrate with our ledger, reconciliation, and treasury platforms.Delivering quality: Write clean, maintainable code with a focus on reliability, security, and observability.Collaborating across teams: Work alongside Product, Finance, Legal, and Banking teams to ensure features comply with regulatory standards.Expanding your skills: Learn from seasoned engineers and deepen your expertise in payments, compliance, and blockchain technologies.Owning features end-to-end: Take full responsibility for specific components from design through deployment and monitoring.

About the Team: As a Senior Android Engineer in the Mobile Platform Squad, you will play a crucial role in the foundation of Mobile Engineering at SumUp. Your team is tasked with developing and maintaining an environment that empowers Mobile Developers to efficiently deliver high-quality products. Additionally, you will provide assistance and support to SumUp employees interacting with our mobile applications. We foster an engineering culture rooted in autonomy, collaboration, and innovation. You will liaise with mobile engineers across the organization as your initiatives will have a widespread impact. The squad is focused on: Maintaining CI/CD pipelines for mobile projects. Creating tools and infrastructure to enhance the developer experience. Supporting and optimizing the codebase across SumUp's mobile applications. Driving long-term technical improvements at scale across the organization. What You Will Do: Shape the core experience for merchants and developers using SumUp’s Android ecosystem. Develop and maintain tools, frameworks, and infrastructure that enhance the consistency, scalability, and reliability of our mobile applications. Collaborate with cross-functional teams, including product management, design, and backend development, to deliver seamless user experiences. Work on CI/CD systems, developer tools, and performance enhancements to streamline mobile development processes. Mentor team members and provide technical guidance across various projects. Uphold high engineering standards and continuously elevate them by introducing new technologies and best practices. Take ownership of technical projects from conception to implementation, ensuring alignment with business objectives and technical standards.

Join our dynamic team at CyberArk as a Senior Software Engineer specializing in Python. In this role, you will be instrumental in designing and developing cutting-edge software solutions that secure the world's most sensitive data.We are looking for a passionate engineer who thrives in a collaborative environment and is eager to tackle complex challenges. Your expertise will help drive innovation and enhance our product offerings.

Join CyberArk Software Inc. as a Senior Software Engineer specializing in Workload Identity. In this pivotal role, you will be responsible for designing and implementing robust software solutions that enhance the security and efficiency of workload identity management. Collaborate with a talented team of engineers, contribute to innovative projects, and drive the development of cutting-edge technology.

Join our dynamic team at CyberArk as a Senior Software Engineer specializing in Secrets Hub. In this role, you will be at the forefront of developing innovative software solutions that enhance security and manage sensitive information effectively. Your expertise will contribute to designing, implementing, and maintaining robust applications that support our clients' security needs.

Join our dynamic team at Bosch Group as a Senior Software Engineer specializing in AUTOSAR for the automotive sector. In this pivotal role, you will contribute to innovative projects that shape the future of mobility. Collaborate with cross-functional teams to design, develop, and implement cutting-edge software solutions that enhance vehicle performance and safety.

About UsAt Redis, we are at the forefront of technology, powering the applications that millions rely on every day. Our innovative solutions streamline processes and enhance user experiences across various industries. If you've ever checked the weather, made an online payment, or tracked your flight status, you've touched our technology. Join us in our mission to create a faster, simpler world.We are seeking a talented and experienced Senior Software Engineer with a passion for polyglot programming, particularly in Go. You'll play a pivotal role in advancing the Redis ecosystem by enhancing the developer experience through collaboration with open source communities and contributing to our widely used client libraries.Why You'll Love This RoleIf you thrive in a collaborative environment and have a passion for open source, this is the perfect opportunity for you. We believe that APIs should be intuitive and delightful to work with, and you’ll have the chance to drive that vision forward. Your strong engineering mindset will help transform innovative ideas into reality as you work across multiple programming paradigms.Your ResponsibilitiesContribute to the development of key client libraries like go-redis, redis-py, predis, and node-redis.Engage with open source communities to foster collaboration and innovation.Promote best practices to ensure an exceptional developer experience.Assist in adding support for new Redis features in client libraries.Act as a technical lead on cross-language initiatives.Work closely with external contributors, library users, product managers, and fellow engineers to drive projects forward.QualificationsStrong team collaboration skills.Proficiency in multiple programming languages and paradigms.Experience with open source projects and community engagement.A passion for creating intuitive and enjoyable APIs.