senior java backend engineer java 21 spring boot Jobs in Berlin

KAYAK, part of Booking Holdings (NASDAQ: BKNG), is the world's leading travel search engine. With billions of queries across our platforms, we help people find their perfect flight, stay, rental car and vacation package. We're also transforming business travel with a new corporate travel solution, KAYAK for Business. As an employee of KAYAK, you will be part...

Lead a team of engineers, shape the architecture of a fast-growing hospitality platform, and drive AI-powered engineering with direct impact alongside the CTO. We aren’t just another B2B SaaS company - we are the engine behind the next era of hospitality. Smart Host is a B2B SaaS platform helping hotels turn fragmented guest and booking data into...

Job Title: Senior Data Engineer (Fixed-Term Contract) Location(s): Berlin, Germany and London, England Application Deadline: 23/10/2026 About the Role As a Senior Data Engineer in SN Data, you will be joining a new programme of work to transform how Springer Nature uses its data: building up data capabilities, creating a data platform and engineering...

Senior Software Engineer – AI Projects Remote | Contract | Approx. 15 Hours Per Week Flexible Hours | $30–$150/hr equivalent, with specialist projects paying more We are recruiting experienced Software Engineers and Senior Software Engineers to support large-scale AI training projects. No previous AI experience is required. The work is focused on real...

Company DescriptionSince its creation in 2007 in the financial city of Frankfurt am Main, Solactive AG has grown to one of the key players in the indexing space. The German multi-asset index provider focusses on tailor-made indices, offering to its clients a faster service, with greater flexibility and at a reasonable cost. Solactive AG and its subsidiaries...

Deine Rolle bei uns Als Softwareentwickler:in bei Assecor entwickelst du qualitative und robuste Lösungen und bringst deine Expertise aktiv in ein crossfunktionales Team ein. Du arbeitest mit aktuellen Technologien, begleitest die Entwicklung qualitativ hochwertiger Anwendungen und übernimmst Verantwortung in vielseitigen Kundenprojekten. Wir setzen auf...

Europace ist Deutschlands größte Transaktionsplattform für Immobilienfinanzierungen, Bausparprodukte und Ratenkredite. Mit der Ausgründung des Ratenkreditgeschäfts in die Europace Ratenkredit GmbH im November 2024 hat Hypoport einen strategischen Schwerpunkt auf das Geschäftsmodell Ratenkredit gesetzt, mit dem Ziel, die innovativste und wirtschaftlich...

Europace ist Deutschlands größte Transaktionsplattform für Immobilienfinanzierungen, Bausparprodukte und Ratenkredite. Mit der Ausgründung des Ratenkreditgeschäfts in die Europace Ratenkredit GmbH im November 2024 hat Hypoport einen strategischen Schwerpunkt auf das Geschäftsmodell Ratenkredit gesetzt, mit dem Ziel, die innovativste und wirtschaftlich...

Company Description Since its creation in 2007 in the financial city of Frankfurt am Main, Solactive AG has grown to one of the key players in the indexing space. The German multi-asset index provider focusses on tailor-made indices, offering to its clients a faster service, with greater flexibility and at a reasonable cost. Solactive AG and its subsidiaries...

Join Choco, where we build and own solutions that reshape a broken food system. The global food supply chain is inefficient by design. Waste is high, margins are thin, and most distributor order processes are done over the phone, tracked across broad spreadsheets, and based on intuition rather than strong data. At Choco, we’re changing that. We build...

Select how often (in days) to receive an alert: Senior Software Engineer (all genders) Contract::Full-time/Part-Time Language(s):English(C1)andGerman(isanadvantage) Serrala is the global leader in finance process automation. For over 40 years, we have been advancing the office of the CFO with our award-winning suite of finance automation applications. Our...

Senior Software Engineer - Local paymentsAt PPRO, we simplify access to local payments - providing a local payments platform that empowers giants like PayPal, Stripe, and Microsoft to connect with billions of consumers worldwide. We are on an ambitious, fast-paced mission to 3x our growth by 2028 - and we’re just getting started.Our magic lies in our team...

Europace ist Deutschlands größte Transaktionsplattform für Immobilienfinanzierungen, Bausparprodukte und Ratenkredite. Mit der Ausgründung des Ratenkreditgeschäfts in die Europace Ratenkredit GmbH im November 2024 hat Hypoport einen strategischen Schwerpunkt auf das Geschäftsmodell Ratenkredit gesetzt, mit dem Ziel, die innovativste und wirtschaftlich...

Zertificon Solutions – Software Manufacturer since 2004.We are IT security specialists: our products encrypt business communications. More than 25% of the 100 highest-revenue companies in Germany, as well as hundreds of medium-sized enterprises across all industries, already use our Z1 encryption solutions. We have big plans and continue to grow steadily....

KAYAK, part of Booking Holdings (NASDAQ: BKNG), is the world's leading travel search engine. With billions of queries across our platforms, we help people find their perfect flight, stay, rental car and vacation package. We're also transforming business travel with a new corporate travel solution, KAYAK for Business.As an employee of KAYAK, you will be part...

About Eye Security Eye Security is an international scale-up providing cyber security with embedded cyber insurance to SMBs in Europe. Our cyber security innovations, state-of-the-art automation and platforms are being built and maintained by our Product and Engineering Teams. Our engineers and product managers collaborate closely with cyber security experts...

Deine AufgabenDu gestaltest die technische Architektur unserer Enterprise-Lösungen und nutzt dabei AI-driven Development als strategisches Werkzeug: Du designst als IT Backend Architekt Systeme mit modernen KI-Tools, triffst durchdachte Tech-Entscheidungen und begleitest Kunden zudem als IT Consultant durch ihre digitale Transformation. In unserem...

THE ROLE & THE TEAMThe ZEOS Outbound team handles article liquidation and return of articles to merchants. As a Senior Software Engineer, you will join an agile, cross-functional team dedicated to building the high-performance services that power our partner-facing products. We work in an API-first environment where we turn complex business logic into...

A11 is the execution engine behind Europe’s top tech unicorns like Trade Republic, Sennder and Kry. We are a SWAT team for business performance in different expertise areas ranging from Marketing, Sales, Data, Tech to People Ops. With 100+ international experts, we step in with tactical precision to tackle complex challenges across business and tech. From...

As a Senior Software Engineer on the LiveIntent Real-Time Ad Serving team, you will design, develop, and own the business logic that powers programmatic advertising at scale — ad selection, targeting, frequency capping, budget pacing, and delivery optimization. The real-time platform is built on C++ and Lua: C++ provides the high-performance server...