Founding Backend Engineer (Go) at TechBizGlobal | Berlin

Join a pioneering cybersecurity and AI startup in Berlin!TechBizGlobal is on the lookout for a Founding Backend Engineer (Go) to be an integral part of our founding team, responsible for architecting the essential security, identity, and enforcement frameworks for our cutting-edge AI-driven security risk management platform.Founded by seasoned cybersecurity …

Atolls is the world’s largest community-driven shopping platform, active in over 20 markets.Our mission is to empower millions to make informed spending decisions by connecting them with the right brands and retailers.With a team of over 1,000 professionals across 10 countries, we deliver products that are used daily on a global scale, giving you the opportunity to truly own your role and witness your impact. If you want to influence the platforms that consumers trust for confident shopping, we want to hear from you.About This Role:We are on the lookout for a Senior Backend Engineer (TypeScript, NestJS/Node.js) to join our Fulfilment team, based in Berlin or available for remote work from Germany. In this pivotal role, you will enhance our cashback reward platforms to create outstanding user experiences that enable our customers to earn and redeem rewards while shopping. As a vital member of our team, you will play a key role in developing and improving the digital environments our users depend on during their shopping journeys.Your contributions will significantly impact how millions of consumers interact with our platforms, guiding them towards smarter, fairer, and more rewarding choices.Our Benefits:At Atolls, we prioritize both your professional and personal advancement. Here’s what you can expect: • A culture that promotes personal and professional growth, with opportunities for internal mobility. • A supportive and open-minded team that values diverse perspectives and innovative ideas. • 32 days of paid vacation plus your birthday off, allowing you to recharge. • A flexible hybrid working model to ensure a healthy work-life balance. • A dedicated learning budget and internal training programs to facilitate your growth. • Mental health coaching to support your overall well-being.

JetBrains has developed tools for software teams since 2000. By automating routine checks and corrections, JetBrains products help developers focus on building and shipping software. The goal: make development more productive and creative. Role overview This Backend Customer Success Engineer role centers on supporting engineering teams as they adopt Kotlin for backend development. The position focuses on helping organizations successfully bring Kotlin into production environments. What you will do Guide organizations through the process of moving from Java to Kotlin, assisting with migration, integration, and scaling. Troubleshoot technical challenges that arise during the transition and support teams as they progress from initial experimentation to stable production use. Work with potential users to clarify how Kotlin adoption works and help design migration plans that fit their specific needs. Locations Amsterdam, Netherlands Berlin, Germany Munich, Germany Prague, Czech Republic Remote, Germany

Join Almedia, where ambition meets innovation. We are not just another company; we aim to become Germany’s next bootstrapped unicorn and are already recognized as Europe’s #3 fastest-growing company (FT1000, 2025). At Almedia, we’re revolutionizing marketing by empowering a community of over 70 million users who earn rewards for engaging with top brands. This is your chance to contribute to a groundbreaking approach to user acquisition for global enterprises.MLOps EngineerAs an MLOps Engineer, you will play a pivotal role in designing, scaling, and optimizing backend systems that enable our payout automation and growth initiatives. Your expertise will help transform intricate business logic into dependable, scalable data-driven systems.This hands-on position involves active engagement in architecture, automation, and the delivery of high-performance Python systems.Key ChallengesDeveloping automated systems for payout structure generation and transformation.Creating dynamic, personalized payout algorithms based on user behavior.Building continuous split-testing infrastructure to enhance payout experimentation.Scaling high-performance Python systems integrated with real-time data and machine learning pipelines.Your ResponsibilitiesOversee the complete delivery cycle: build, deploy, and optimize backend systems and services at scale.Establish technical direction and coding standards for Python development within ML and data projects.Align technical architecture with business objectives to minimize complexity and enhance efficiency.Collaborate with ML engineers and product teams to develop frameworks for experiment versioning and evaluation.Improve system reliability and performance to ensure robustness and scalability.

About the CompanyJoin coretylynt, an innovative AI-driven trade platform that is revolutionizing industrial supply across infrastructure, energy, and construction materials. Our platform connects carefully vetted suppliers from Asia, Europe, and the GCC region with local demand, all through a single, integrated system.Leveraging our proprietary AI technology, we digitize and automate the entire lifecycle of materials trade—from procurement and pricing to inventory management, logistics, and embedded financing—effectively replacing countless manual and relationship-driven processes with real-time orchestration.Our buyers receive instant quotes, dependable availability, and predictable delivery via a unified operating system, while suppliers benefit from accurate forecasts, stringent demand management, and seamless integration into cross-border fulfillment networks. We collaborate with leading brands to efficiently execute both dropship and cross-dock fulfillment for large-scale transactions, transforming global supply chains into predictable, repeatable workflows akin to software.With the backing of top-tier investors and institutional financing partners, coretylynt has achieved significant growth, operating across six international markets and on the path to profitability. Our dynamic team of over 80 professionals based in Berlin and Asia is dedicated to building the world’s first industrial-grade AI operating system for materials—redefining the landscape of global trade in one of the world’s most essential industries.Our Supply Chain & Logistics department is at the very heart of our operations, managing real-time data flows, intricate routing logic, and integrations with a diverse ecosystem of providers. In this role, you will play a pivotal part in shaping the systems that enhance operational predictability and scalability for our clients.Tech Stack: Java 21 (Spring Boot 3), Python, PostgreSQL, Kinesis, AWS, Terraform, GitHub Actions, Node.js, TypeScript.

Job OverviewPosition: Agentic Backend Engineer (Golang)Location: Ideally based in or near Vienna, or within a 2-hour time zone differenceLanguages Required: Fluent English; proficiency in any other European language is an advantageExperience: A minimum of 5 years in backend development with Golang and other OOP languages, contributing to a SaaS platform and overseeing the complete software lifecycleContract Type: Full-time only; freelancing is not an option

fiskaly is looking for a Staff Backend Engineer with strong Golang experience. This position focuses on designing, building, and maintaining scalable backend services that form the foundation of fiskaly’s products. Collaboration with colleagues from various teams is a key part of the role, with a shared goal of improving system performance and setting technical standards. Locations Berlin, Germany Madrid, Spain Milano, Italy Vienna, Austria What you will do Design, develop, and maintain backend services using Golang Work closely with teams across disciplines to deliver reliable solutions Drive improvements in system performance Help establish and promote technical quality and best practices within the backend team

Affinidi develops technology that helps individuals and organizations manage their data with greater control. The company specializes in privacy and security, delivering decentralized digital identity solutions. Its platform enables secure data exchange and digital credential management across various industries and international boundaries. Role overview The Senior Backend Engineer (Rust) will take part in designing and building backend systems that support Affinidi’s digital identity products. This position centers on applying strong Rust expertise to real-world engineering problems, always with a practical mindset. Requirements Extensive experience developing backend systems with Rust Ability to address engineering challenges with practical, effective solutions

Join our dynamic and innovative team at bitlane as a Senior Backend Developer. We are seeking a passionate software engineer to contribute to our product development journey from conception to deployment and beyond. In this role, you will collaborate closely with project managers and frontend developers to ensure that we meet and exceed our project requirements. The ideal candidate will possess a deep understanding of software engineering principles and industry best practices, delivering clean, maintainable, and error-free code with robust test coverage. You will be responsible for writing automated tests, conducting code reviews, and taking end-to-end ownership of your projects. We value problem solvers with an inquisitive and innovative mindset, ready to leverage their software development skills to create new services. Your role will involve backend development across a variety of projects, ranging from small applications and single-page websites to comprehensive e-commerce systems and complex CRM solutions. If this resonates with your skill set, we look forward to receiving your application!Responsibilities:Collaborate with our software team to design and launch new featuresEnhance our product and codebase with your analytical insightsMaintain our systems at the cutting edge while developing our growing environmentExpand our existing web technology portfolioCreate new microservices using AWS and improve existing onesDevelop and maintain tools for software and data interactionDefine project scope in collaboration with project managersCommunicate your work status and meet deadlines established with project managers

Transform the Future of TravelBecome part of the GetYourGuide mission to connect travelers with unforgettable experiences worldwide. Our platform is trusted by millions for unique activities, all driven by our commitment to enhance each journey — including yours. Are you ready to unlock your potential alongside a community of fellow explorers? Explore your next opportunity at our Berlin headquarters or one of our regional offices worldwide, from New York to Bangkok. Visit getyourguide.careers to take the first step.Team MissionThe Supply Tech team empowers suppliers to deliver outstanding experiences at scale, enabling travelers to discover and book top-quality activities with confidence. We develop the essential platform and product capabilities that allow our supply partners to thrive: broadening their reach, maximizing revenue, differentiating their offerings, and streamlining operations through effective tools and support, all while ensuring a reliable marketplace characterized by fairness and transparency.Our group is driven by AI and a platform-oriented mindset, collaborating closely with Product, Design, Data, and Business teams to implement robust systems that scale within a complex supplier ecosystem. We grant engineers high levels of autonomy and ownership, encouraging practical trade-offs while maintaining high standards of quality, integrity, and long-term market adaptability.Your RoleEstablish the technical direction for Supply Tech: define target architecture, quality benchmarks, and multi-quarter technical initiatives that foster supplier growth (including self-serve onboarding, optimization, and quality assurance).Lead cross-functional collaboration on intricate projects: facilitate alignment, coordinate tasks across teams, and deliver measurable results while managing dependencies and trade-offs.Design and enhance scalable, maintainable systems facilitating supplier workflows (onboarding, catalog quality, and optimization cycles), emphasizing simplicity, resilience, and long-term viability.Elevate engineering standards and operational excellence: enhance reliability, monitoring, and incident preparedness; minimize systemic technical debt; and ensure our services operate safely at scale.Translate business objectives into technical strategies: collaborate closely with Product, Design, Data, and Commercial stakeholders to clarify outcomes, propose solution alternatives, and make decisions that balance speed, accuracy, and strategic flexibility.Develop effective methodologies for the team: promote reusable patterns (platform primitives, guidelines, etc.) and support engineering best practices.

Are you ready to take your career to the next level? Join dev2 as a Senior Data Engineer specializing in Python and play a pivotal role in our data-driven projects. You will work closely with cross-functional teams to design and implement scalable data solutions that drive innovation and efficiency.In this role, you will:Design, develop, and maintain data pipelines and ETL processesCollaborate with data scientists and analysts to optimize data storage and retrievalEnsure data quality and integrity through rigorous testing and validationContribute to architectural discussions and guide best practices

Greetings from AMBOSS! We are on the lookout for a Senior Backend Engineer specializing in PHP to join our dynamic Educator Experience team and help us redefine the future of medical education!About AMBOSSFounded in 2012, AMBOSS is a pioneering learning and clinical decision support platform dedicated to empowering physicians worldwide to provide the best possible care. By leveraging cutting-edge technology, we are transforming how medical professionals acquire and utilize scientific knowledge. Our team, known as AMBOSSians, shares a passion for supporting clinicians and medical students alike, striving for success that resonates with our mission—when a user expresses, “AMBOSS makes practicing medicine enjoyable and efficient,” we know we are making a difference. Curious about our vibrant culture? Check out our video to discover what sets us apart.Why This Role is ExcitingAs a Senior Backend Engineer at AMBOSS, you will play a pivotal role in enhancing the user experience for doctors and medical students, enabling them to make informed decisions that affect the healthcare of billions globally. We are looking for an individual who is deeply passionate about harnessing technology to its fullest potential and leading the charge in engineering excellence. Join our agile team in transforming educational institutions, such as medical schools and clinics, by optimizing the use of AMBOSS resources in their teaching methods.Your Responsibilities:Lead engineering projects for our innovative B2B product, “Educator Tool,” from inception to deployment.Promote best practices in coding standards, testing, and maintainability.Collaborate with cross-functional teams to establish project requirements and specifications.Respond to ad-hoc requests from customer support.Contribute to a culture of continuous learning by sharing knowledge within the AMBOSS community.Your Qualifications:Extensive experience with PHP and its modern frameworks such as Symfony, Slim, and Laravel, alongside proficiency in MySQL.Comprehensive experience across the full web development lifecycle, including requirements analysis, design, development, testing, and deployment.

Atolls is the world’s largest community-driven shopping platform, active in over 20 markets.We empower millions to make informed spending choices across discovery, evaluation, and (re-)purchase by connecting individuals with the ideal brands and retailers.Our team of 1,000+ members across 10 countries develops products utilized daily on a global scale, providing you with genuine ownership and the chance to witness your impact. Are you ready to help shape the destinations people trust for confident shopping? We invite you to learn more.About This Role:We are on the lookout for a Senior Java Backend Engineer to become an integral part of our expanding engineering team in Berlin. In this pivotal role, you will be responsible for designing, developing, and scaling high-performance backend systems utilizing contemporary Java technologies and cloud-native architectures. This position is perfect for individuals who thrive on tackling complex systems, prioritize code quality, and possess a robust architectural mindset.Our Benefits:At Atolls, we are committed to fostering both your professional and personal development. Here’s what you can look forward to:A culture that champions personal and professional growth, alongside opportunities for internal mobility.A supportive and open-minded team that welcomes diverse perspectives and innovative concepts.32 days of paid vacation plus an additional day off for your birthday, ensuring you have ample time to recharge.A flexible hybrid working model to help you find the right balance between work and life.Access to a learning budget and internal training to enhance your skills in your role.Mental health coaching to promote your well-being.Regular global and local gatherings to celebrate achievements and strengthen connections.The chance to take a sabbatical after three years with the company.A cloud-based company setup, allowing flexibility and collaboration regardless of your location.*These are global benefits applicable to all employees, with additional local perks based on your location.Responsibilities:As a Senior Java Backend Engineer, you will...

About commercetools At commercetools, we believe that true innovation is built on a solid foundation, which is a harmonious blend of our cutting-edge products and dedicated team. Our diverse group of innovators, builders, and problem-solvers have redefined the landscape of commerce architecture, fostering a culture of exploration and experimentation. Together, they drive the evolution of commerce, empowering ambitious brands around the globe. We are committed to facilitating the next generation of commerce for our clients. From AI-powered tools that enhance business decisions to seamless integration of digital and brick-and-mortar shopping experiences, we enable our clients to experiment, scale, and thrive without constraints. In our environment, the best ideas prevail regardless of their source. Here, you will have the autonomy, resources, and trust to shape the future of commerce while also crafting your own journey.

Role overview AMOSS is looking for a Backend Engineer to work on Content-API development. The position centers on backend systems that influence both user experience and overall system performance. Go is the main programming language, and the work includes close collaboration with teams using React. What you will do Develop and enhance backend APIs for content delivery Write clear, maintainable code in Go Work alongside frontend teams that use React Identify and solve complex backend issues Help improve system performance Location This role is based in Berlin.

Join Our Mission to Transform HealthcareBe part of a dedicated team of innovators at Doctolib as we revolutionize healthcare accessibility!As a member of our tech department, you will play a key role in creating cutting-edge products and features that enhance the lives of healthcare professionals and patients alike. We thrive in an agile environment, collaborating closely with product, design, and business teams.Your Role as a Senior AI EngineerWe are seeking a Senior AI Engineer (Python) to join our Conversational AI (CAI) team within the Practice Efficiency domain.In this position, your primary goal will be to develop and expand our Phone Assistant product, aiming to transform patient access to care and streamline daily operations for practitioners. Leverage state-of-the-art technologies in AI, NLP, and speech recognition to create exceptional user experiences and scale your innovations to millions of users.

About coretylyntcoretylynt is revolutionizing the industrial supply chain with an innovative AI-powered trading platform that facilitates seamless connections between vetted suppliers across Asia, Europe, and the GCC region and local demand. Our integrated platform digitizes and automates the entire lifecycle of materials trade, optimizing processes from procurement and pricing to inventory management, logistics, and embedded financing. This automation replaces thousands of manual, relationship-driven tasks, enabling real-time orchestration of supply chains.Our platform provides buyers with instant quotes, dependable availability, and predictable delivery through a unified operating system. Suppliers enjoy precise forecasting, effective demand management, and smooth integration into cross-border fulfillment networks. Partnering with leading brands, we manage both dropship and cross-dock fulfillment for large-scale transactions, transforming global supply chains into predictable, efficient workflows akin to software systems.With strong backing from top-tier investors and institutional financing partners, coretylynt has achieved triple-digit million GMV, operates in six international markets, and is swiftly moving toward profitability. Our team of over 80 professionals, based in Berlin and Asia, is committed to creating the world’s first industrial-grade AI operating system for materials, redefining how global trade functions in one of the world’s largest and most critical industries.Join our dynamic Tech team, where you will collaborate with highly ambitious and knowledgeable engineers, tackle complex challenges, and gain exposure to commercial aspects.Our Tech Stack: Python, LangGraph, LLM APIs (OpenAI, Anthropic, Gemini), AWS, GitHub Actions, Node.js, Java 21 (Spring Boot 3), Postgres, Kinesis, Terraform, Typescript, NextJS, React.

Note: This position requires relocation to our Milan office.About SatispayAt Satispay, we aim to transform everyday payments into a straightforward, equitable, and accessible experience for all. Our mission now extends to shaping the future of financial transactions.We are a dynamic movement empowering millions, united by our ambition to confront significant challenges. Our fast-paced culture encourages bold thinking, collaboration, and continuous growth.If you seek more than just a typical job—if you're eager to collaborate with a talented team to create something meaningful—you've come to the right place.Your ResponsibilitiesAs a Senior Backend Software Engineer within the Business Team, you will be instrumental in designing the future of digital welfare payments, overseeing everything from employer benefits to intricate product offerings. Your role will encompass the entire journey for employers and employees, ensuring their long-term satisfaction. You will guide the technical direction, maintain quality, and ensure the delivery of complex systems affecting multiple services that enable thousands of employers to manage their corporate welfare efficiently. Here’s what a typical day looks like:Develop Multi-Service Solutions: Lead technical analysis for medium to large projects that affect multiple services in the Employer domain. Design comprehensive, reliable solutions with a focus on scalability, security, and maintainability for products that define the core of welfare.Maintain Technical Quality: Implement strong testing strategies that balance automation with manual oversight, and manage gradual rollouts with stringent monitoring to ensure precision and reliability in welfare distributions.Proactively Address Challenges: Anticipate and resolve technical challenges, fostering knowledge sharing within the organization. Tackle unique B2B registration flows and high-volume benefit allocations while ensuring code quality through diligent reviews.Ownership of Execution: Take full responsibility for your projects from conception to completion, delivering features that truly address user needs—from the employer's signup process to the employee's first use of welfare benefits—through seamless backend integration.

About lemon.markets At lemon.markets, we empower individuals to invest with ease. Our mission is to expand investment opportunities for all European clients and businesses by providing seamless access to capital markets. By enabling FinTechs, banks, and wealth managers to offer cutting-edge investment products, we aim to foster financial well-being for their clientele.lemon.markets offers a Brokerage-as-a-Service platform, delivering uncomplicated digital access to capital markets through a single API. Our API-first infrastructure ensures that launching investment products is both customer-centric and compliant. We simplify complexity for our partners with comprehensive documentation, a self-service customer operations portal, and adherence to a clear regulatory framework, allowing them to launch in weeks, not months.Having experienced firsthand the challenges of brokerage infrastructure, we understand that building an investment product can be costly and daunting. We alleviate this burden by shielding our partners and their clients from underlying complexities, making investing accessible to everyone. We thrive on tackling challenging problems and creating significant value, attracting exceptional talent because we believe that outlier companies are built by extraordinary individuals like you.Your Mission:As a Solutions Engineer, you will play a crucial role in ensuring the success of our commercial partnerships. Acting as a vital technical liaison, you will connect our external partners with internal product development teams, ensuring that the solutions we design are both commercially attractive and operationally feasible. You will assist prospects in comprehending how their investment use cases align with the lemon.markets platform and what it entails to bring those use cases to fruition across teams.This position offers a unique opportunity to influence every stage of the partner and product lifecycle, from aiding pre-sales go-to-market efforts to facilitating seamless partner onboarding post-sales. You will guide prospects through deep qualification processes, uniting internal teams around a shared understanding of requirements, risks, and solution pathways. You will transform complexity into clarity by structuring workshops, mapping operational models, and coordinating across disciplines to ensure the design of end-to-end solutions.We seek a strategic thinker, a problem solver, and a passionate advocate for both our partners and our product. You will thrive in a dynamic, collaborative setting, motivated by the challenge of building lasting solutions.

Pleo’s Berlin-based Commercial team is looking for a Solution Engineer to support the pre-sales process for its spend management platform. This role blends technical expertise with an understanding of accounting to help prospective customers see the value Pleo brings to financial workflows in B2B SaaS. Role overview The Solution Engineer works closely with sales, guiding customers through product capabilities and tailoring demonstrations to their needs. The position involves both technical and business conversations, ensuring potential clients understand how Pleo can streamline their expense management. Team structure This position reports to the Solutions Manager and is part of a small, collaborative team of three. The group partners with the wider Commercial team to accelerate sales cycles and provide input that helps refine the product. Teamwork and open communication are essential in this setting. What you will do Lead product demonstrations, presentations, and workshops tailored to customer requirements. Create and deliver technical proposals, respond to RFPs, and build proof of concepts. Develop a deep understanding of each customer’s objectives, technical environment, and accounting processes. Share customer feedback and insights with product and engineering teams to influence future development. Ensure a seamless transition from pre-sales to implementation and onboarding teams.