Backend Software Engineer

Join Our Journey at Welcome!Established in 2015 in Athens, Greece, Welcome is revolutionizing travel experiences by offering more than just a transfer service. We are pioneers in delivering a comprehensive and personalized journey for travelers from their arrival to their departure. Welcome Pickups caters to every travel need, providing seamless transfers, e…

The Sportsbook Area within Product Development is expanding rapidly, and we are on the lookout for a talented Backend Software Engineer to join our world-class Sportsbook team. Our platform, meticulously crafted in-house, is gaining traction not only in new markets but also as a B2B offering. With our product available globally, we provide around-the-clock support to enhance the experience for users betting on various sports.Our Product Development organization boasts a truly global presence, featuring cross-functional teams across five Tech Hubs: Malta, Budapest, Stockholm, Tallinn, and Athens. Life at Betsson Group is akin to a thrilling rollercoaster ride—fast-paced, full of unexpected turns, and always exhilarating. Our diverse team of over 2,800 colleagues from more than 75 nationalities collaborates daily to tackle new challenges and seize opportunities for growth. If you thrive in an innovative environment and enjoy pushing boundaries, you will find your place among us.As a vital member of our Sportsbook tech team—a high-performance group focused on delivering optimal functionality and user experience in the iGaming sector—you will play a key role in ensuring our platform meets the demands of our brands serving over 20 different markets. Join us in our mission to create unmatched performance and functionality in the industry!

Join Our Innovative Team at SchooxAt Schoox, we pride ourselves on being a cutting-edge platform for learning and talent development, dedicated to transforming traditional, compliance-driven training into a dynamic approach that empowers employees and drives business growth. Unlike other learning management systems, our platform enables organizations to assess the challenging-to-measure impacts of their learning initiatives on overall business performance.In a competitive landscape with over 500 players, Schoox has emerged as one of the fastest-growing talent development platforms, thanks to our innovative product strategy and commitment to reimagining corporate training. Our mission is to foster a culture of satisfied customers through the happiness of our employees.Your Role as a Backend Software EngineerAs a key member of our development team, you will take on the role of a Backend Software Engineer, where you will have the autonomy to influence crucial technology and product decisions. Collaborating with fellow engineers, you will contribute to building a product that resonates with our users. Given the rapid evolution of our product, your ability to adapt to both qualitative and quantitative feedback will play a vital role in shaping our offerings. Proficiency in PHP and MySQL is essential, while experience with NoSQL databases like MongoDB and familiarity with Java will be considered a significant advantage.We seek talented software engineers who possess a profound understanding of system engineering and thrive in a fast-paced startup environment. Responsibilities may expand based on your skills and contributions.What We Expect from You:The ideal candidate will embody the following traits:Acquisitive Learner: Resourceful in seeking knowledge and learning independently.Principled: Aligns activities and tasks with overarching goals and values.Disciplined: Brings structure to both work and life.Adaptable: Adjusts beliefs and actions based on new information.Facilitative: Cultivates talents and capitalizes on opportunities.Qualifications:We are looking for candidates who meet the following criteria:Technical Proficiency: Strong experience with PHP and MySQL.NoSQL Knowledge: Familiarity with MongoDB is a plus.Design Patterns: Understanding of design patterns will be appreciated.Language Skills: Proficient in English; a CPE certificate is a plus.Education: A university degree is required.What We Offer:We are looking for someone who enjoys solving problems and making things work smoothly. Our team operates in an open and collaborative environment, and we are committed to fostering a fun and engaging workplace.

At Skroutz, we are driven by a straightforward mission: to amaze our customers. Since our inception in 2005, we've believed that satisfied customers lead to satisfied merchants. Our goal is to understand and anticipate customer needs, providing them with an unparalleled and worry-free shopping experience.Our vision is ambitious: we strive to be the Everyday App, the ultimate platform where millions can satisfy their online shopping desires. Whether you’re in search of the latest smartphone, replenishing pantry staples, finding the ideal outfit for an occasion, or hunting down that elusive gaming console, Skroutz is your reliable partner for effortless shopping.Our aspirations extend well beyond Greece. We are on track to become one of Europe’s fastest-growing marketplaces, with exciting expansions already taking place in Cyprus and the Balkans. Our unwavering commitment to customer satisfaction drives every decision we make.To fulfill our vision, we are in search of individuals who share our enthusiasm for e-commerce and technology. If you are motivated by the desire to create extraordinary shopping experiences for our users and assist sellers worldwide in growing their businesses, we would love to have you on our team.Join us at Skroutz and be part of a transformative journey that is redefining online shopping. Together, let’s turn everyday moments into extraordinary experiences.Are you ready to embark on this challenge?#AimToAmazeOur Engineering ValuesMaster Your Craft: Develop and refine your technical skills, and take pride in your work.Release Early & Iterate: Launch prototypes swiftly to gather critical feedback and refine based on insights. Don’t hesitate to make adjustments and revisit to enhance.Be a Team Player: Offer assistance, listen, and seek to comprehend. Take initiative and be proactive.Avoid Over-Engineering: Steer clear of unnecessary complexity or regulation.Enjoy Your Work: Celebrate achievements along the way.Technologies We UseOur primary tech stack includes Ruby for backend development, utilizing the Ruby on Rails framework, along with JavaScript (ES6) and React/Redux for frontend development. We operate on a MariaDB cluster for storage and utilize Elasticsearch, Kafka, MongoDB, Redis, and Memcached extensively. Jenkins is employed for CI, while tools like Sentry, DataDog, and Grafana are used for monitoring. We strive to select the best tools available to meet our needs. To learn more about our projects, visit our Engineering blog.Your Contribution to Skroutz's Vision

Are you excited about the power of Artificial Intelligence? At Satori Analytics, we are dedicated to transforming industries through innovative Data & AI solutions. Our mission is to empower global brands by providing unparalleled clarity and insights, utilizing cutting-edge technologies. Our diverse range of services spans from developing cloud-based ecosystems for fintech to creating predictive models for the airline industry, covering the entire data lifecycle—from data ingestion to AI implementation.As a rapidly expanding scale-up, our talented team of over 100 professionals—including Data Engineers, Data Scientists, and other tech experts—delivers pioneering analytics solutions for various sectors, including FMCG, retail, manufacturing, and financial services. Join us as we spearhead the data revolution in South-Eastern Europe and beyond!Ready to collaborate with one of Greece's largest energy companies?Your Daily Responsibilities:Design, construct, and maintain backend services that address real-world business challenges, guiding projects from concept to production.Engage in the complete software development lifecycle—from gathering requirements to deploying and managing systems in a live environment.Monitor, diagnose, and enhance production systems and cloud infrastructure utilizing observability tools.Work closely with product teams and stakeholders to translate business requirements into precise, actionable technical solutions.

Join the Kaizen Gaming family!At Kaizen Gaming, we are the driving force behind Betano, one of the largest GameTech companies globally, with operations in 19 markets. Our mission is to harness leading-edge technology to deliver unparalleled experiences to the millions of customers who rely on us for their entertainment.Our diverse workforce of over 2,700 Kaizeners hails from more than 40 nationalities across three continents, creating a vibrant and inclusive workplace. Proudly recognized as one of the Best Workplaces in Europe and certified as a Great Place to Work, we ensure that every day is an opportunity for growth and collaboration. Ready to Press Play on your potential?Role OverviewAs the Software Engineering Team Lead, you will be pivotal in guiding and inspiring a team of software engineers in the development and delivery of top-notch software products. Your responsibilities will include managing project execution, mentoring team members, and upholding engineering best practices. This role blends technical prowess with leadership and communication skills to foster team and organizational success.

Join the Kaizen Gaming Team!At Kaizen Gaming, the driving force behind Betano, we are proud to be recognized as one of the leading GameTech companies globally, operating across 19 markets. Our commitment to leveraging innovative technologies allows us to deliver exceptional experiences to millions of customers who rely on us for their entertainment needs.Our diverse team comprises over 2,700 Kaizeners from more than 40 nationalities, collaborating across three continents. We are honored to consistently rank among the Best Workplaces in Europe and have received the Great Place to Work certification for our offices. Embrace the opportunity to unlock your potential with us!About the RoleAs a Senior Backend Engineer, you'll be an integral part of an autonomous Agile team, collaborating closely with the Product Owner, Agile Delivery Lead, Automation Testers, and fellow Software Engineers to establish a distinct competitive edge for Kaizen and deliver an unparalleled online experience for our users. You will also engage with skilled backend professionals within the Backend Chapter. Key Responsibilities:In your role as a Senior Software Engineer at Kaizen, you will oversee a wide array of projects, ranging from customer-facing websites and mobile applications to internal tools and backend services designed to handle high traffic volumes.Take full ownership of our applications throughout a dynamic development journey.Design and implement innovative solutions, guiding them from conception to deployment.Transform requirements into both simple and sophisticated technological systems, tackling challenges presented by our large-scale, high-availability infrastructure.Contribute significantly to the design, construction, and maintenance of efficient, reusable, and reliable code.Explore and evaluate new technologies to discover effective methods for addressing daily challenges.Deliver high-value features swiftly.Challenge existing norms and drive continuous improvement within the team and the product.Our Technology Stack:Our platforms are predominantly developed in C# / ASP.NET, with new services utilizing .NET Core. Front-end applications are built using Vue.js or Angular, while legacy systems employ server-rendered (Razor) views in conjunction with jQuery. We leverage Microsoft Orleans for scalable distributed applications, and rely on MS SQL Server for most storage needs, supplemented by Redis and ElasticSearch where appropriate. RabbitMQ serves as our primary message broker.

Join Skroutz, where our mission is to deliver extraordinary experiences. Since our inception in 2005, we have believed that satisfied customers lead to satisfied merchants, driving us to understand and fulfill their needs while providing a seamless shopping journey.Our ambition is to transform into the Everyday App, the preferred platform for millions to meet their online shopping requirements. From the latest smartphone to essential pantry items, stylish outfits, or collectible gaming consoles, Skroutz is your reliable partner for effortless shopping.With aspirations that extend beyond Greece, we are on the path to becoming one of Europe's fastest-growing Marketplaces, with exciting ventures underway in Cyprus and the Balkans. Our commitment to customer satisfaction shapes every decision we make.We are looking for passionate individuals who thrive in the intersection of e-commerce and technology. If your drive is to create remarkable shopping experiences for users while enabling sellers globally to thrive, we want you on our team.At Skroutz, be a part of a transformative journey that redefines online shopping. Together, let’s turn everyday moments into exceptional experiences.Are you ready for the challenge?#AimToAmazeOur Engineering ValuesMaster your craft and take pride in your work.Deliver early and iterate based on feedback.Collaborate and be proactive within your team.Avoid over-engineering and focus on simplicity.Enjoy the process and celebrate achievements.Technologies We UseOur primary stack includes Ruby for backend development, utilizing the Ruby on Rails framework, alongside Javascript (ES6) and React/Redux for frontend. We leverage a MariaDB cluster for storage, with extensive use of Elasticsearch, Kafka, MongoDB, Redis, and Memcached. Jenkins is our go-to for CI, and we utilize tools like Sentry, DataDog, and Grafana for monitoring purposes. We consistently seek the most effective tools tailored to our needs. Discover more about our projects on our Engineering blog.Your Contribution to Skroutz's VisionWe are searching for Senior Backend Software Engineers with a robust technical background...

Join the dynamic team at FINARTIX as a passionate Backend Application Developer. Contribute to innovative projects across various sectors, playing a vital role in developing, implementing, and managing technology-driven business solutions that enhance our clients' delivery approaches. Key Responsibilities Engage in the complete software development lifecycle, including the implementation, testing, and maintenance of custom applications. Adhere to established standards for programming, security, and performance while ensuring thorough code documentation. Act as a technical consultant to clients, providing expert advice and support. Assist both business and IT users with existing applications to ensure optimal performance. QualificationsBachelor's or Master's degree in Computer Science, Engineering, or a related field is required.A minimum of 3 years of experience in Software Engineering.Strong proficiency in Backend Engineering with the .Net Framework.Hands-on experience with various database technologies, including SQL, NoSQL, and Vector.Familiarity with Web Services (SOAP/REST) and Application Servers (IIS).Understanding of system frameworks such as Git and Azure DevOps (ADO), as well as container technologies like Docker or Kubernetes.Previous experience in Infrastructure Architecture and support is a plus.Cloud Services certification (AWS, Azure, GCP) is an added advantage.Exceptional programming skills and a creative approach to problem-solving.Excellent communication and time management skills.Proficient in both English and Greek, with strong written and verbal capabilities.BenefitsProfessional development through engaging, real-world projects across diverse industries.Work within a rapidly-growing technology company with esteemed partners.Opportunity to collaborate with talented colleagues in a diverse environment.Competitive salary package.Comprehensive private health insurance.Access to training and development opportunities.Company laptop provided.Flexible work environment.

Join the dynamic team at Finartix as a Senior Software Engineer specializing in .NET technologies. We are seeking a motivated and talented Backend Application Developer to contribute to our Software Engineering Practice. You will play an essential role in designing, implementing, and managing innovative technology-driven solutions that enhance our clients’ operational efficiency across various sectors. Key ResponsibilitiesEngage in the complete software development lifecycle including designing, testing, and maintaining bespoke applications.Adhere to established programming standards for naming conventions, security, performance, and ensure comprehensive code documentation.Act as a trusted technical advisor to clients, offering solutions tailored to their needs.Provide ongoing support to both business and IT users for existing applications.

Join Kaizen GamingAt Kaizen Gaming, the driving force behind Betano, we are proud to be one of the leading GameTech companies globally, with operations spanning 20 diverse markets. Our commitment lies in leveraging state-of-the-art technology to deliver unparalleled experiences for millions of customers who rely on us for their entertainment.Our vibrant team consists of over 2,700 talented individuals from more than 40 nationalities across three continents.Recognized as one of the Best Workplaces in Europe and certified as a Great Place to Work in all our offices, we guarantee that no two days will ever be the same. Are you ready to Press Play on Your Potential?About the RoleAs a Backend Engineer, you will be an integral part of an autonomous Agile team, collaborating closely with the Product Owner, Agile Delivery Lead, Automation Testers, and fellow Software Engineers to create a competitive edge for Kaizen and provide an exceptional online experience for our customers.At Kaizen, our software engineers are entrusted with a variety of projects, ranging from customer-facing websites and mobile applications to internal tools and backend services, all designed to handle high traffic and volume.Your ResponsibilitiesDevelop innovative solutions from the ground up, guiding them from concept to production.Transform requirements into efficient and sophisticated technological systems, leveraging our large-scale, highly available infrastructure.Design, build, and maintain efficient, reusable, and reliable code.Explore new technologies to identify effective solutions for everyday challenges.Deliver high-value features rapidly.Question the status quo and drive improvements for both the team and the product.Technology StackOur platforms primarily utilize C# / ASP.NET, with new services developed in .NET Core. Contemporary applications employ Vue.js for the frontend, while legacy systems utilize server-rendered (Razor) views combined with jQuery and Knockout.js. We predominantly rely on MS SQL Server for data storage, supplemented by Redis and ElasticSearch when applicable. RabbitMQ serves as our primary message broker, and we use GitLab for code versioning and continuous integration, alongside the Atlassian suite for issue tracking and documentation.

Join Kiefer Tech, a pioneering force in the technology sector, where we harness over 12 years of engineering expertise from the Green Energy domain to craft innovative AI, robotics, and enterprise solutions throughout Greece and the EU. Our mission is to construct sovereign AI infrastructure that upholds data privacy within EU borders while driving substantial business outcomes. We are committed to our values of innovation, quality, and sustainable partnerships with clients, which empower us to develop cutting-edge AI infrastructure, including the first authentic Greek Large Language Models and intelligent automation solutions that help organizations flourish.Collaborating with NVIDIA, we merge our sustainable infrastructure knowledge with top-tier AI technology, fostering an ecosystem that drives innovation and augments Greece’s technological independence. Join our team to help shape the AI-driven future.Technology Stack: Python (FastAPI) and TypeScript (Node.js) microservices deployed on Kubernetes, supported by PostgreSQL, Redis, and AWS.Role Overview: As a Senior Backend Engineer within the Sophea platform team, you will be pivotal in defining the architecture for enterprise-grade AI products. Your contributions will enhance system reliability and empower engineering teams to deploy faster and with greater confidence. You will enjoy significant technical autonomy, focusing on innovation rather than maintenance.

Ferryhopper is an equal-opportunity employer that embraces diversity and is dedicated to fostering an inclusive work environment. We firmly oppose all forms of discrimination and harassment, and this commitment extends to every aspect of our employment practices.About FerryhopperFerryhopper is transforming the online ferry booking landscape, striving to enhance the travel experience for ferry passengers. We partner with over 180 ferry companies across 35 countries to deliver a modern and hassle-free booking process. Our mission is to address the needs of all travelers continuously and elevate our service quality.To learn more about our team, check out Ferryhopper in a nutshell.Role OverviewWe are in search of a Quality Assurance Engineer specializing in backend and API testing to ensure the reliability, performance, and overall quality of our products.In this position, you will collaborate with developers, product owners, and fellow QA engineers to validate the functionality and stability of our backend services and integrations. Your contributions will be crucial in confirming that our systems operate correctly across various services, APIs, and data flows.Although the role mainly focuses on backend validation and API testing, it will also involve automation testing as needed to enhance efficiency and coverage.Key ResponsibilitiesAs a QA Engineer, your duties will include:Analyzing specifications and technical requirements to identify potential gaps and edge cases.Designing and executing comprehensive test plans and cases for backend services and APIs.Conducting API testing utilizing tools such as Postman, Insomnia, Swagger, or equivalent tools.Validating data integrity, system integrations, and backend workflows.Identifying, documenting, and tracking bugs using issue tracking systems.Working closely with developers to investigate issues and confirm fixes.Performing regression testing to ensure system stability across releases.Contributing to test automation, particularly for API and backend testing, where applicable.Proposing enhancements to testing processes, tools, and quality practices.QualificationsWe are looking for someone with exceptional skills in detecting existing bugs and anticipating potential issues throughout the product lifecycle.Analytical mindset with strong problem-spotting abilities.Commitment to advocating for quality at every stage of the process.Attention to detail and a dedication to excellence.Enthusiasm for process enhancement and elevating testing standards.Proactive problem-solving attitude with a user-focused approach.Strong communication and collaborative team spirit.

IKH is a globally recognized leader in Software & Robotics Solutions, renowned for our innovative approach to digital transformation. In just a few years, our dynamic team has expanded by over 80%, and we have relocated to a modern, spacious office to accommodate our growth. As we embark on numerous exciting projects in 2026, we are eager to welcome a skilled Backend Developer to our team to tackle challenging outsourced projects.Key Responsibilities:Execute complex project tasks with precision.Utilize Waterfall implementation methodologies effectively.Translate client requirements into robust functionalities.Collaborate closely with the architecture team to align solutions with client needs.Integrate applications with developed modules and external systems.Support deployment and configuration management activities.

Join our team as a Senior Backend Engineer (Python) and engage in a challenging project that focuses on data-intensive processing, system integration, and semantic technologies. In this pivotal role, you will take charge of an established codebase, enhancing its stability and evolving it to meet the project’s demands. This position is perfect for seasoned engineers who thrive in working with complex systems and have a solid grasp of data-driven architectures.Key Responsibilities:Thoroughly analyze and take ownership of an existing Python-based backend.Refactor and optimize backend components with an emphasis on maintainability and performance.Develop and sustain data processing pipelines and integration workflows.Collaborate closely with data and semantic engineers on RDF/SPARQL-driven processes.Contribute to the architectural redesign and technical documentation.Assist with deployment, configuration, and troubleshooting tasks.Ensure high code quality through rigorous reviews, testing, and adherence to best practices.Requirements:A minimum of 3 years of professional experience in backend development.Expertise in Python programming.Experience with:Apache Airflow and AWS.Data-intensive or integration-heavy systems.APIs, batch processing, and backend services.Configuration-driven systems (XML / JSON / YAML).Strong understanding of:Software architecture and design patterns.Debugging and maintaining legacy codebases.Proven experience in complex, multi-stakeholder projects (experience in EU or public-sector projects is a plus).Preferred Qualifications:Familiarity with Semantic Web technologies (RDF, SPARQL, OWL).Experience in data modeling or knowledge-based systems.Exposure to DevOps practices (CI/CD, containerization).Experience in contributing to or maintaining technical documentation (e.g., AsciiDoc, Antora).Benefits:We value talent and commitment, offering the following perks:Attractive full-time salary.Private health insurance under the company’s group plan.Flexible working hours.Access to top-quality tools.Opportunities for professional development, including language courses and specialized training.Career advancement potential by collaborating with leading specialists in the field.A dynamic work environment that encourages personal and professional growth.If you're ready for an exciting challenge, we would love to hear from you!

About the Role netcompany1 is looking for a Software Engineer / Consultant in Athens. This role involves building software solutions and working closely with colleagues to deliver projects that match client requirements. What You Will Do Develop and implement software based on project goals Work alongside a team of engineers and consultants Contribute to delivering reliable, high-quality results for clients Who We’re Looking For Interest in technology and solving complex problems Ability to collaborate with team members If this sounds like a fit, netcompany1 would like to connect.

Role overview Renesas Electronics Corporation seeks an Associate Software Engineer to join its team in Kallithea, Athens. This entry-level position involves supporting the creation of new software solutions while working closely with experienced engineers. The role provides practical experience with modern technologies and the opportunity to contribute to ongoing projects. What you will do Collaborate with team members to design, develop, and test software components Participate in team projects and take part in code reviews Gain knowledge and skills from experienced colleagues in a supportive environment Work environment The team emphasizes collaboration and ongoing professional development. Mentorship and skill-building are part of daily work, creating a setting where learning and growth are encouraged.

Role overview Renesas Electronics Corporation seeks an Embedded Software Engineer for its Kallithea, Athens location. The position centers on developing embedded systems used in a range of applications. Teamwork across multiple functions is essential, as projects often require input from colleagues in different areas. What you will do Design and implement software tailored for embedded systems Collaborate with cross-functional teams to deliver integrated solutions Optimize existing code and support ongoing system improvements

Who are we?At Agile Actors, we are a dynamic tech company dedicated to enhancing and empowering technical teams for both international and Greek clients. Our distinctive approach combines coaching, continuous learning, and innovation, creating a thriving ecosystem where professionals not only contribute but also grow.Joining Agile Actors means being part of diverse, high-performing teams that work on cutting-edge solutions for global leaders in their industries, including Austrian Post, Red Hat, and Swissquote.Work should be more than just a job; it should be a place where individuals can thrive. We are proud to hold the title of a Great Place to Work 2026, affirming our commitment to fostering an environment where talent, passion, and growth can flourish.

Join our dynamic team at netcompany1 as a Junior Software Engineer! We are looking for enthusiastic individuals who are eager to learn and grow in a collaborative environment. This is a fantastic opportunity for recent graduates or those early in their careers to gain hands-on experience in software development.