Senior Full Stack Engineer (Golang)

About UsAt Redis, we are pioneers in creating the infrastructure that powers some of the world's fastest applications. Whether you're checking the weather, making a payment, or tracking your flight status online, our technology plays a crucial role. Join us in building a faster world with simpler, more efficient experiences.Our core mission is to accelerate the transition to AI-native systems globally. We are committed to delivering high-performance services that enhance developer and agent workflows, making them faster, more efficient, and easier to scale.As a Senior Engineer on our AI Services team, you will design and implement impactful memory and context capabilities for next-generation chatbots and AI agents. You will take ownership of architecture, implementation, and production deployment while ensuring high standards for quality, performance, and operability. Additionally, you will mentor emerging talent through code reviews and technical guidance, and collaborate closely with the AI Research team to align on roadmap and technical direction.This position offers a fantastic opportunity to spearhead innovation and expand the capabilities of the Redis platform in the burgeoning Agentic AI era.

About UsAt Redis, we engineer the technology that powers the fast applications that shape the modern world. If you've checked the weather, processed a payment, or tracked your flight online today, our technology has likely played a role. Join us in crafting a simpler and faster world with innovative solutions for over 10,000 global customers.Why You’ll Love Working HereWe are on a mission to accelerate the transition to AI-native systems. Our focus is on providing high-performance, developer-friendly services that enhance the speed and simplicity Redis is renowned for, making AI workflows more efficient and scalable.As a vital member of the Redis AI Services team, you'll play a crucial role in developing advanced memory and context functionalities essential for chatbots and AI agents. This is an incredible opportunity to drive innovation and enhance the Redis platform to meet the evolving demands of the AI era.Your ResponsibilitiesDesign and implement AI-driven features, prioritizing scalability, reliability, and performance.Foster innovation by exploring cutting-edge AI technologies and frameworks, contributing to Redis’ advancements in the AI domain.Collaborate closely with cross-functional teams, including engineering, support, and DevOps, to lead the development of the fastest NoSQL databases 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

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.

About Cast AI Cast AI builds an automation platform that combines artificial intelligence with Kubernetes infrastructure. The goal: improve performance, reliability, and efficiency in production environments by embedding autonomous decision-making into cloud systems. Manual management of Kubernetes and AI environments becomes less effective at scale. Cast AI addresses this by providing continuous automation that adapts infrastructure as conditions change. This approach helps reduce manual work, cuts costs, and boosts operational efficiency. More than 2,100 companies rely on Cast AI, including Akamai, BMW, Cisco, FICO, HuggingFace, NielsenIQ, Swisscom, and TGS. Global Team and Culture Headquartered in Miami, Cast AI operates across 34 countries, including Europe, North America, Latin America, and APAC. The team values diverse perspectives and intentionally builds a global workforce. Recent Milestone In January 2026, Cast AI reached unicorn status after a strategic investment from Pacific Alliance Ventures, part of the Shinsegae Group (a conglomerate valued at over $50 billion). The company’s valuation now exceeds $1 billion. Location Requirements This Senior Software Engineer - Infrastructure role is open to residents of Bulgaria, Croatia, Estonia, Greece, Hungary, Latvia, Lithuania, Poland, Romania, Slovakia, Slovenia, and Ukraine.

Join CyberArk as a Senior Software Engineer specializing in Secure AI Agents, where you will play a crucial role in developing innovative solutions that enhance security protocols. You will collaborate with a talented team of engineers and work on cutting-edge technology aimed at protecting critical business infrastructures.

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.

Jobgether is looking for a Senior Software Engineer in Bulgaria to help build AI-powered SaaS products. This role centers on designing, implementing, and maintaining software applications that use artificial intelligence to improve user experiences and support business goals. Role overview This position involves close collaboration with teams across the company. The Senior Software Engineer will work with others to define project requirements, create technical specifications, and deliver reliable, high-quality code. What you will do Design and develop software applications that incorporate AI features Maintain and enhance existing systems to meet evolving needs Work with cross-functional groups to gather requirements and clarify technical details Contribute technical expertise to expand the company’s portfolio of AI-driven products Requirements Experience as a software engineer, with a focus on designing and building applications Ability to collaborate with diverse teams and translate requirements into technical solutions Strong commitment to delivering high-quality, maintainable code

About UsWelcome to Redis! We are the driving force behind the high-performance applications that power everyday experiences. Whether you're checking the weather, making online purchases, or tracking flight statuses, our technology is at work. At Redis, you will engage with cutting-edge technology that’s both fast and easy to use, as we strive to create a simpler and faster world for our over 10,000 clients globally. Are you ready to make an impact?Your RoleAs a Software Engineering Team Lead for Redis AI Services, you will take on a pivotal leadership role, guiding a team of skilled engineers to develop highly scalable, reliable, and production-ready services. Your leadership will be instrumental in promoting software excellence and engineering best practices, as you harness your expertise to enhance Redis’ functionalities—especially in memory and context capabilities for chatbots and agents, as part of our expanding AI Services suite. This role requires a blend of software engineering leadership, strategic decision-making, and execution of impactful product initiatives.Key ResponsibilitiesLead and Develop a High-Performing Engineering Team. Mentor team members to produce top-tier software quickly, underpinned by strong engineering principles, pragmatic design, and flexible testing methodologies.Facilitate Agile Execution and Decision-Making. Cultivate a culture of rapid iterations and data-driven decisions to effectively balance immediate product delivery needs with long-term strategic goals.Enhance the AI Services Platform. Collaborate with diverse teams, including AI research, product management, and cloud infrastructure, to advance Redis’ AI solutions into robust, customer-ready offerings.Operational Leadership. Establish and track SLAs, SLOs, and KPIs. Build strong observability, incident management, and release processes to ensure high service uptime and performance.Recruit and Cultivate Talent. Attract top engineering talent and nurture a culture of technical curiosity, operational excellence, and continuous improvement.What We’re Looking For6+ years of experience as a software engineer specializing in backend, cloud, or distributed systems, with a minimum of 2 years in a technical leadership role.Demonstrated success in leading product-focused engineering teams to deliver high-quality outcomes.

About Cast AI Cast AI builds an automation platform focused on streamlining cloud-native and AI infrastructure at scale. The platform integrates autonomous decision-making into Kubernetes and cloud environments, aiming to optimize performance, reliability, and efficiency in production. Over 2,100 companies, including Akamai, BMW, Cisco, FICO, HuggingFace, NielsenIQ, Swisscom, and TGS, use Cast AI to automate away manual tickets, alerts, and adjustments, replacing them with systems that adapt infrastructure dynamically. This shift helps organizations improve efficiency and reduce costs. Our Team and Culture Headquartered in Miami, Cast AI operates in 34 countries across Europe, North America, Latin America, and APAC. The company values diversity and inclusion, drawing on a wide range of perspectives to inform its work. In January 2026, Cast AI reached unicorn status following a strategic investment from Pacific Alliance Ventures, part of the Shinsegae Group. The company’s valuation now exceeds $1 billion. Location This Senior Software Engineer role is open to candidates based in Bulgaria, Croatia, Estonia, Greece, Hungary, Latvia, Lithuania, Poland, Romania, Slovakia, Slovenia, or Ukraine. Role Overview Senior Software Engineers at Cast AI contribute to core product features across several teams. Openings are available in the following areas: Workload Optimization: Automate resource management by dynamically adjusting allocations to lower costs and improve application reliability. Karpenter: Enhance integration between Karpenter and Cast AI, adding enterprise features to the open-source Kubernetes autoscaler and supporting large-scale deployments. Reporting: Build scalable solutions for data reporting and analysis, improving user experience and insights. Join Cast AI to help shape the future of autonomous infrastructure.

About UsWelcome to Redis! We are the creators of the technology that powers the fast applications that drive our modern world. Whether you checked the weather, made a purchase online, or tracked your flight today, our contributions are at work. At Redis, you will engage with cutting-edge technology that is reshaping the digital landscape, enhancing experiences for over 10,000 customers globally. Join us in our mission to create a faster, simpler world.This is a distinctive chance to influence Redis capabilities as we transition into the era of Artificial Intelligence.You will be part of the core Redis Search/Vector team, tackling some of AI’s most pressing challenges, including advanced indexing, vector and hybrid retrieval, and latency-sensitive solutions on a global scale. Your work will directly impact millions of developers by transitioning features from research to production, optimizing latency and recall while managing costs effectively.

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

Join CyberArk, a leading provider of identity security solutions, as a Staff Software Engineer specializing in Secure AI agents. In this pivotal role, you will leverage your expertise to develop cutting-edge AI-driven security solutions that safeguard enterprises against emerging threats. You will work collaboratively within an innovative team, contributing to the design and implementation of secure software applications that enhance our product offerings.

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

Role overview Jobgether is seeking an AI Automation Engineer for a partner organization in Bulgaria. The main goal of this position is to develop intelligent systems that streamline business operations and reduce manual tasks. What you will do Design and build automation workflows using large language models (LLMs), APIs, and current integration platforms Create scalable solutions that link different tools and platforms into unified, data-driven processes Collaborate with sales, marketing, and customer success teams to boost productivity and efficiency Explore new AI technologies to address complex business problems Who thrives in this role Engineers who enjoy combining technical problem-solving with practical business needs Individuals who like working across teams and disciplines People who are comfortable with evolving technology and global projects Location This position is based in Bulgaria.

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

Why Choose Cast AI?At Cast AI, we are revolutionizing the cloud-native and AI infrastructure landscape through our cutting-edge automation platform. By integrating autonomous decision-making into Kubernetes and cloud environments, we ensure continuous optimization of performance, reliability, and efficiency in production settings.The traditional methods of operation are becoming obsolete. With the increasing complexity of Kubernetes and AI environments, relying on manual decisions is no longer viable. Cast AI transforms the process by replacing tickets, alerts, and manual tuning with seamless automation that adjusts infrastructure dynamically as conditions evolve, resulting in natural cost savings and enhanced efficiency.Join over 2,100 leading companies that trust Cast AI, including Akamai, BMW, Cisco, FICO, HuggingFace, NielsenIQ, Swisscom, and TGS.A Global Team with Diverse PerspectivesHeadquartered in Miami, we are committed to a global and intentional approach to diversity. Currently, Cast AI operates in 34 countries across Europe, North America, Latin America, and APAC, bringing a wealth of perspectives into our operations and leadership.Unicorn MomentumHaving achieved unicorn status in January 2026 thanks to a strategic investment from Pacific Alliance Ventures, the corporate venture arm of Shinsegae Group (a $50+ billion Korean conglomerate), our valuation exceeds $1 billion. This is just the beginning of our exciting journey.Join us in shaping the future of autonomous infrastructure!About the RoleOptimizing databases is a challenging task—PostgreSQL alone has over 350 configuration parameters, making it difficult for even seasoned engineers to identify optimal settings. Have you envisioned a database that self-optimizes continuously in the background, allowing you to concentrate on developing outstanding products?At times, query performance may degrade unexpectedly. Envision a system that can proactively identify performance issues, analyze root causes, and automatically refine your queries and indexes, generating pull requests with the precise optimizations required.Cast AI is in search of a talented Senior Software Engineer with a passion for databases and a desire to delve into the underlying technologies that drive them. Your understanding of implementation specifics around transactions, wire protocols, WAL, indexes, query planning, and other core database functionalities will empower you to create a product that automates traditionally intricate and manual processes.