Senior Java Developer/Architect (m/w/x)

Join our client, a leading company established in 2013, specializing in digital transformation projects within the telecommunications and construction sectors. They have built a reputation as a reliable partner in the industry. To strengthen their development team, they are seeking a skilled Software Developer with a strong background in software architectur…

Join our dynamic team at CHECK24 as a Professional/Senior Java Backend Developer (m/w/d) in Vienna! In this role, you will be responsible for developing and enhancing our financial and insurance products using cutting-edge technologies. Your expertise in Java, Spring, MongoDB, Elasticsearch, and Kubernetes will be crucial as you take charge of the design, implementation, and quality assurance of state-of-the-art Java web applications within our microservices architecture.You will oversee complete project cycles and product lifecycles, ensuring that our solutions are robust and innovative. If you are passionate about software development and eager to make an impact from day one, we encourage you to apply!

Join our client, a leading European company in the education sector, as a Fullstack Developer specializing in React and Java. Contribute to the development of modern web applications and be a vital part of an agile development team.Development and enhancement of web applications within a cross-functional teamSupport in architecture and design decisionsIdentification of weaknesses and development of effective solutionsParticipation in the implementation of AI-based tools and methodologies

About the Role REWE International Dienstleistungsgesellschaft mbH is looking for a Senior Full-Stack Developer to strengthen the team in Wien. This position focuses on building and improving solutions that support logistics and supply chain management. What You Will Do Work across both front-end and back-end systems to deliver new features and enhancements Collaborate with colleagues from different departments to turn business needs into technical plans Contribute ideas and technical expertise to ongoing and upcoming projects Who We’re Looking For Experience in both front-end and back-end development Strong problem-solving skills and a proactive approach Comfort working with cross-functional teams

Join our innovative team at CHECK24 as a Senior Full-Stack Java Developer. In this pivotal role, you will leverage your expertise in Java development to create scalable and robust applications that enhance user experience. You will work collaboratively with cross-functional teams to design and implement cutting-edge solutions that meet our clients' needs.

Project OverviewWe are seeking a seasoned Technical Solution Architect (f/m/d) for a cross-departmental IT large-scale project in the public sector. The ideal candidate will have extensive experience in the design, development, and integration of complex JAVA architectures. In this role, you will shape the technological foundation of the system, develop tailored architectural solutions, and mentor development teams in building robust, maintainable, and scalable frameworks.

We are seeking a passionate and skilled Senior .NET Developer to join our client's dynamic development team within an internationally renowned company in the medical technology sector. This position offers an exciting opportunity to contribute to the development of cutting-edge web applications.Engage in the creation and enhancement of modern web applications using ASP.NET Core and Blazor WebAssembly.Design and implement backend functionalities adhering to Clean Architecture principles.Develop, maintain, and document RESTful APIs.Produce automated unit tests to ensure high code quality.Conduct code reviews to uphold quality standards and foster knowledge sharing within the team.Collaborate closely with the testing team throughout the development and release phases.

Join us in revolutionizing product cost and CO₂ intelligence!Tsetsoftware is at the forefront of transforming the manufacturing sector's approach to cost efficiency and sustainability. Our innovative software enables engineers to make informed, eco-friendly, and cost-effective decisions throughout the entire lifecycle—from development to production and procurement.With esteemed clients such as BMW Group, Brose, and Stabilus, we are rapidly expanding our reach across Europe, North America, and Asia.If you are driven by a passion for developing impactful software that fosters sustainability and you aspire to contribute to the backend of a purpose-driven product, we invite you to join our team.

Pineapple seeks a Fullstack Developer (w/m/x) in Wien with a focus on .NET and Blazor. This position supports the team by building and maintaining core web applications. What you will do Maintain and enhance the main Blazor-based application that drives key business functions. Contribute to the design and development of new single-page applications using Angular in upcoming projects. Plan, implement, and maintain unit and integration tests to help ensure software quality. Collaborate with colleagues from various departments to gather requirements and keep projects moving forward. Role overview This role focuses on both backend and frontend development, with an emphasis on .NET and Blazor technologies. Over time, work will also include projects using Angular. Strong teamwork and communication skills are important, as the position involves regular interaction with different teams.

About the Role REWE International Dienstleistungsgesellschaft mbH is looking for a Senior Full-Stack Developer (m/w/x) in Wien, with a particular strength in frontend development. This position centers on designing and building web applications that improve user experience and support business goals.

Engage in the development and ongoing enhancement of a customizable white-label platform tailored for marketing and e-commerce websites.Integrate new functionalities on both the frontend and backend, alongside refactoring and enhancing existing solutions.Contribute actively throughout the software development lifecycle within an agile, cross-functional product team, working alongside Frontend, Backend & Full-Stack Developers, UX/UI designers, QA specialists, Product Owners, Scrum Masters, and DevOps professionals.Design, implement, and maintain RESTful services that support our platform's functionality.Assess and adopt new technologies to deliver cutting-edge solutions.Uphold high standards for code quality, performance, maintainability, and testability.Document technical specifications and promote knowledge sharing and coaching within the team.

Join the innovative team at ServiceNow as a Senior Platform Architect in Wien, where you will play a crucial role in shaping the architectural vision of our cutting-edge platform. You will collaborate with cross-functional teams to design scalable and highly available solutions that meet the needs of our diverse clientele. Your expertise will guide the development of best practices and ensure the integrity of our platform architecture.

Unser Kunde ist seit über einem Jahrzehnt erfolgreich im österreichischen Gesundheitswesen etabliert und bietet innovative Lösungen im Bereich Unternehmenssteuerung, -planung und Controlling an. Um das familiäre Team zu verstärken, suchen wir eine/n Fullstack Developer (m/w/x).Entwicklung und (Weiter-)Optimierung von webbasierten Anwendungen zur effektiven Unternehmenssteuerung, die sich durch hohe Funktionalität und Performance auszeichnen.Erweiterung und Verbesserung bestehender Applikationen.Nach einer umfassenden Einarbeitung übernehmen Sie die Full-Stack-Betreuung eines Moduls.Als Ansprechpartner/in für Kunden unterstützen Sie bei der Konzeption bis hin zur Implementierung.

About the Role REWE International Dienstleistungsgesellschaft mbH is looking for a Senior Backend Developer to strengthen our eCommerce Checkout and Order Services team in Wien. This position focuses on building and improving backend systems that support checkout processes and order management for our online customers. What You Will Do Develop and maintain backend services for eCommerce checkout and order workflows Work closely with other engineers to design solutions that improve the user experience Contribute ideas to streamline and optimize our checkout processes Location This role is based in Wien.

Qualysoft is on the lookout for a skilled Java Full Stack Developer with a strong emphasis on backend development to enhance our agile team. In this role, you will be instrumental in creating and maintaining high-quality enterprise services and streamlining business processes through BPMN, ideally utilizing Camunda BPM. Your responsibilities will include designing and developing robust APIs, implementing microservices architectures, and ensuring seamless database integration, all while working collaboratively with cross-functional teams in a dynamic agile environment. Experience in the telecommunications sector will be considered a significant advantage.

Location: Vienna (1–2 days on-site per week during onboarding, then 2-4 days per month; otherwise fully remote) Start: ASAP | Duration: 12 months (extension possible) | Workload: 100% Language: English (must-have) + German (nice to have)Join our dynamic team at Qualysoft as a Java Full Stack Developer. We seek an individual with robust backend development skills to contribute to our agile projects. Your responsibilities will include designing and developing APIs, implementing microservices architectures, integrating with databases, and participating in frontend development utilizing JavaScript/TypeScript with frameworks such as React or Angular. Collaborate with cross-functional teams in a fast-paced agile setting. Prior experience in the telecommunications industry is highly desirable.

We are seeking a seasoned Software Development Expert (f/m/d) for a long-term, cross-departmental transformation project in the public sector. The ideal candidate will possess extensive knowledge in developing multi-tier application systems, with a focus on Java EE, Angular, PowerBuilder, as well as database and middleware components in accordance with TA 2.0 and TA 3.0J architectures.Position: Software Development Expert (f/m/d)Location: Wien (1–2 days per week on-site), otherwise remoteStart: Q1 2026 | Duration: 12 months | Workload: 100%Languages: German required

ABOUT CCE.CCE is an international company dedicated to the energy transition, with offices in seven countries. We specialize in developing and delivering clean energy solutions based on photovoltaic systems across the entire value chain – from project development and financing to construction, operation, maintenance, and energy management.Our mission is to contribute significantly to a global energy transition.We are currently seeking a passionate and driven M&A Manager (m/f/x) for our office in Vienna.YOUR RESPONSIBILITIESAssist the Head of Mergers & Acquisitions and the M&A team in taking a leading role in the day-to-day operations of M&A projects and ongoing transactions.Aid in identifying and evaluating acquisition and divestiture opportunities, as well as other internal M&A initiatives.Support the preparation of acquisition or divestiture proposals for the CCE Investment Committee.Assist in conducting and managing buy-side and sell-side due diligence processes with financial, tax, legal, technology, and other advisors, along with relevant internal departments.Review or prepare marketing and transaction documents such as teasers, information memoranda, process letters, (non-)binding offers, letters of intent, and purchase agreements.Support negotiations related to ongoing transactions, including valuations and structuring, while coordinating with various departments within the CCE Group (e.g., Finance, Legal, Asset Development, and relevant country departments).Assist in relationship management concerning investors and external advisors (e.g., financial advisors, legal advisors, market and technical consultants) for initiating and managing transactions.

Join our client in the telecommunications industry as they embark on a significant modernization and cloud transformation initiative. We are seeking skilled Senior Solution Architects / Solution Designers to enhance cross-functional collaboration between business and IT. Your role will focus on crafting scalable, cloud-based enterprise solutions that align business requirements with technical implementation, ensuring a smooth transition into the modern digital landscape.

Join our client's dynamic software company that specializes in tailored solutions and practical IT services. We are currently seeking a skilled Senior Software Tester to enhance our testing team.Design and execute software tests (both manual and automated).Create and maintain comprehensive test cases and test plans.Document testing outcomes and manage defects using tools like Jira.Automate test cases and further develop existing frameworks.Collaborate closely with development and project management teams.Proactively contribute to the development of testing strategies and quality processes.Optional: Assume the role of Testing Community Lead, organizing exchanges with other communities, sharing best practices, mentoring, and hosting tech talks without formal leadership responsibilities.