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20 jobs similar to Senior Backend Software Engineer (Java/Spring Boot + LLM Workflow Integration)

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  • Design, develop, and maintain scalable backend services and APIs, ensuring high performance, security, and reliability.
  • Build and optimize data pipelines to ingest, store, and serve large-scale datasets, including video and ML training data.
  • Balance rapid development of MVPs and POCs for user research with building robust, long-term backend foundations.

Frontera is reimagining how children with autism and other behavioral health needs get the care they deserve. They bring together clinicians, technologists, and autism specialists to build AI tools that help care teams work smarter and spend more time with the children and families who need them most.

Europe 5w PTO

  • Be the go-to person for all things backend in your product area.
  • Work closely with the CTO and the Tech Lead to set technical direction.
  • Design, build, and ship features on schedule, collaborating with product, design teams, and customers.

Secfix automates security compliance for SMBs in Europe, helping them automate ISO 27001, GDPR, TISAX, and SOC 2 in weeks instead of months.

Europe

  • Build the foundations that power our AI Agents at scale, designing systems for reliability, performance, and change.
  • Use modern AI tools in your daily work to explore designs, scaffold code, generate tests, and document decisions.
  • Expected to have solid engineering skills - clear contracts, readable code, strong test suites, observability, and maintainable architectures.

At Zowie, we’re revolutionizing how businesses interact with their customers by creating a future where AI Agents handle 100% of customer interactions.

Europe

  • Design, build, and maintain backend services and APIs that power core features of the Clari platform.
  • Collaborate with cross-functional teams to design scalable and maintainable solutions.
  • Contribute to improving performance, observability, and overall system reliability.

Clari is deeply committed to building an enterprise-grade platform that serves as the backbone for our customer's most critical business process - Revenue.

US

  • Design, develop, and maintain scalable backend services and APIs, ensuring high performance, security, and reliability.
  • Build and optimize data pipelines to ingest, store, and serve large-scale datasets, including video and ML training data.
  • Own and evolve the foundational data model that powers the entire Frontera platform.

Frontera is reimagining how children with autism and other behavioral health needs get the care they deserve. They bring together clinicians, technologists, and autism specialists to build cutting-edge AI tools that help care teams, expanding access to high-quality services for families everywhere.

US Canada

  • Design, build, and maintain the backend services that power Hatch’s mobile apps and IoT-enabled devices.
  • Lead backend system design, define best practices, and mentor other engineers.
  • Guide cross-functional technical strategy to improve the overall platform.

At Hatch, we’re on a mission to help people build better sleep habits—so they can feel more focused, energized, and present in their lives.

$100,000–$140,000/yr
US Unlimited PTO

  • Build and maintain secure, high-traffic backend services supporting critical Veteran-facing features.
  • Modernize legacy components, develop and refine REST APIs, and support identity and access workflows.
  • Integrate with VA enterprise systems, troubleshoot backend issues, and collaborate with partners to deliver scalable functionality.

Wilcore believes that the best products are built when companies understand and value the things they are working on.

India 5w PTO 2w paternity

Design, develop, and maintain backend services in Java using Spring Boot and related frameworks. Build scalable and performant microservices for SaaS applications. Collaborate with frontend engineers, product managers, and stakeholders to deliver high-quality features.

We use an AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements.

US Unlimited PTO

Work with a cross-functional team to define and validate new features. Implement microservice endpoints using Python or Java. Write unit tests and participate in code reviews.

Canopy is a fast-growing SaaS company in South Jordan, Utah building simple, efficient software for accounting firms.

US

  • Measure and optimize the performance, scalability, and uptime of backend services
  • Conduct design and code reviews and push the bar for engineering rigor and standards
  • Collaborate with product management, customer success, and customer support to deliver the best experience for our users

Branch empowers workers with financial freedom by helping companies accelerate payments and providing working Americans with accessible, free financial services. They value a diversity of opinions and working styles, fostering a shared belief in innovation and initiative.

$160,091–$228,702/yr
5w PTO 26w maternity

  • Design and build reliable backend services that scale across millions of creators and episodes, enabling seamless podcast ingestion into Spotify.
  • Drive technical discussions, propose new ideas, and help shape the future of podcast infrastructure.
  • Collaborate closely with engineers, product managers, and multi-functional partners across the Podcast Mission.

Spotify transformed music listening forever when we launched in 2008 and our mission is to unlock the potential of human creativity.

$156,000–$185,000/yr
US Unlimited PTO 12w maternity 6w paternity

  • Design, develop, and maintain backend services, APIs, and data pipelines that power Knock's customer-facing and internal applications.
  • Architect and build scalable backend services using Node.js and TypeScript, ensuring they integrate seamlessly with our frontend experiences.
  • Contribute to AI-powered features and initiatives, integrating AI services to enhance our risk analysis and decision-making capabilities.

Knock is redefining the home buying and selling experience. They are a passionate team of industry experts who knew there had to be a better, simpler way for people to navigate the journey between homes and have been honored as one of Inc.’s Best Workplaces six times in the past seven years.

Spain

  • Architect, develop, and maintain scalable, robust backend services, starting from our voice and chat AI applications.
  • Integrate 3rd party API integration such as Twilio (voice), WhatsApp, ElevenLabs, OpenAI and others.
  • Design, build, maintain, and improve multi-agent orchestration frameworks for AI-powered conversations.

Tuotempo is the trusted patient engagement platform powering some of Europe and Latin America's leading healthcare institutions.

Europe Unlimited PTO

  • Architect, design, and build backend systems that transform our internal AI technology into a scalable, market-ready product.
  • Design and optimize APIs, database schemas, and data processing workflows that seamlessly integrate with our AI/ML pipelines.
  • Collaborate with the Product, Data, and Engineering teams to define technical requirements and deliver features that enhance our users’ experience and overall system performance.

Sword Health is shifting healthcare from human-first to AI-first through its AI Care platform. Sword Health has 1,000+ enterprise clients and has raised more than $500 million from leading investors.

Europe 6w PTO

  • You develop and scale solutions primarily with Java & Spring Boot – independently and with realistic goals.
  • Analyze existing systems and decide whether refactoring or new development is the right way to achieve the goal.
  • Design performant REST-APIs and make well-founded design decisions in various project contexts.

Public Cloud Group (PCG) helps companies modernize, secure, and future-proof their IT landscapes in the cloud. They have nearly 500 cloud experts at 21 locations within Europe and are continuing to grow.

Europe

  • Writing well designed, reusable, testable and secure code by applying best software development practices
  • Designing and implementing low-latency, high-availability and performant applications
  • Architecting well defined APIs for user facing elements developed by front end developers

Dataroid is an award-winning digital analytics and customer engagement platform empowering leading brands to enhance customer experience. As Turkey's fastest-growing data analytics platform, they embrace challenges and explore new technologies with over 120 million users.

$177,300–$265,900/yr
US Europe

  • Architect, build, test, and monitor AWS-based workflows to solve critical business problems
  • Develop microservices for ML-driven applications using Python or Java, ensuring scalability and resilience.
  • Guarantee high levels of service availability through participation in an on-call rotation.

PlayStation is a global leader in interactive and digital entertainment. They've thrilled gamers since 1994 and are a wholly-owned subsidiary of Sony Corporation, striving to create an inclusive environment that empowers employees and embraces diversity.

$125,562–$179,374/yr
North America 5w PTO 26w maternity

  • Collaborate with stakeholders to design backend systems and APIs.
  • Develop and operate Java services deployed to millions of users.
  • Contribute to an agile team, solving problems and improving recommendation quality.

Spotify transformed music listening forever when we launched in 2008. Our mission is to unlock the potential of human creativity.

$220,000–$250,000/yr
US Unlimited PTO

  • Partner with the Senior Product Manager to translate AI product strategy into a clear technical roadmap.
  • Design, implement, and maintain backend services and APIs that power AI-enabled features for customers and internal users.
  • Mentor and level up engineers in AI/ML best practices, distributed systems design, and platform thinking.

Binance.US is America’s home to buy, trade, and earn digital assets and is a licensed and regulated U.S. crypto platform.

Spain

Architect, develop, and maintain scalable backend services for voice and chat AI applications. Lead the migration from PHP/HTTP to a real-time backend framework. Integrate 3rd party APIs such as Twilio (voice), WhatsApp, ElevenLabs, OpenAI and others.

Tuotempo transforms healthcare experiences through intelligent digital solutions, powering some of Europe and Latin America's leading healthcare institutions.