Java Backend Developer Jobs

About Appier Appier (TSE: 4180) is an AI-native Agentic AI as a Service (AaaS) company that empowers businesses to create value through cutting-edge AdTech and MarTech solutions. Founded in 2012 with the vision of "Making AI Easy by Making Software Intelligent," Appier helps businesses turn AI into ROI through its Ad Cloud, Personalization Cloud, and Data Cloud—each powered by Agentic AI that enables autonomous, adaptive, and real-time decision-making. Today, Appier operates 17 offices across APAC, the US, and EMEA, and is listed on the Tokyo Stock Exchange. Learn more at www.appier.com . About the role Engineers at Appier build a wide range of platforms and services that interconnect data and AI with our customers and users—operating at scale where every millisecond and every nine of availability matters. As a Senior Backend Engineer (SRE / Reliability & Performance) , you will sit at the intersection of backend development and site reliability engineering: designing and building scalable, performant backend services while owning the reliability, observability, and performance characteristics of large-scale, high-traffic systems (QPS > 10k). You will profile and tune systems end to end, lead the response to production incidents, and drive the engineering practices that keep our services fast and resilient as traffic grows. Seniority and title are determined by job-related skills, experience, and evaluation following the interview. We welcome international candidates to our teams. This position is ideally to be based in Taiwan. Responsibilities Design and build scalable, reliable, and maintainable backend services and the components that support them Own system reliability and performance for high-traffic services, including SLO/SLA definition, error budgets, and capacity planning Profile, benchmark, and tune critical components to resolve latency, throughput, and scalability bottlenecks in medium-to-large systems (QPS > 10k) Diagnose and sol

We’re building a world of health around every individual — shaping a more connected, convenient and compassionate health experience. At CVS Health®, you’ll be surrounded by passionate colleagues who care deeply, innovate with purpose, hold ourselves accountable and prioritize safety and quality in everything we do. Join us and be part of something bigger – helping to simplify health care one person, one family and one community at a time. Position Summary CVS Health is seeking a Digital Development Engineer II to Improve the reliability, resilience, availability, and performance of critical applications and infrastructure. The Digital Development Engineer will establish and mature SLIs, SLOs, monitoring, and alerting for applications The right candidate will participate in production incident response, troubleshooting, stabilization, root-cause analysis, and MTTR improvement What you will do Develop automation to reduce manual operational work and improve reliability Create and maintain operational standards, procedures, and runbooks Analyze major releases and production changes for potential availability and reliability risks Identify application dependencies and potential failure points across distributed systems Develop and implement resiliency and testing strategies for applications and infrastructure Partner with application, platform, infrastructure, and business teams to drive reliability improvements Contribute to CI/CD and automation workflows that enable reliable software delivery Help drive SRE principles and reliability practices across engineering teams Required Qualifications 5+ years experience in software engineering & backend development Experience with Java/Spring Boot and/or Node.js/TypeSc

Location: Kfar Saba, IL (hybrid) ERGO NEXT's mission is to help entrepreneurs thrive. We’re doing that by building the only technology-led, full-stack provider of small business insurance in the industry, taking on the entire value chain and transforming the customer experience. Simply put, wherever you find small businesses, you’ll find ERGO NEXT. Since 2016, we’ve helped hundreds of thousands of small business customers across the United States get fast, customized and affordable coverage. We’re backed by industry leaders in insurance and tech, and we still have room to grow — that’s where you come in. Our Backend Software Engineer can expect to work with the latest backend technologies and programming languages. We’re big fans of server-side Kotlin, and we produce clean, testable code fast and push it into production several times a day via our CI / CD pipeline. What You’ll Do: Design, build, and maintain efficient, reusable, and reliable code, ensuring high performance and responsiveness of the system. Participate in architectural discussions and code reviews, actively contributing to elevating our engineering standards and best practices. Identify bottlenecks, optimize database queries, and continuously improve system performance and scalability. Embrace a 'you build it, you run it' approach, ensuring our production environments remain highly stable and observable. What We Need: At least 3 years of proven experience in Backend development. Java/Kotlin or similar languages (Python, .NET). A B.Sc. in Computer Science or equivalent is a must. Excellent knowledge and understanding of OOP concepts and best practices Hands-on development of highly distributed, cloud-based environments - an advantage. We work with AWS, but any cloud experience is a plus. Experience working with Relational Databases and good SQL skills. Adaptable, with a passion for quickly learning new technologies and working effectively in a dynamic environment Good interpersonal and co

Reolink , a leader in intelligent visual technology for homes and businesses, was founded in 2009 by a group of engineers with a strong commitment to and passion for smarter security solutions. Our products are now trusted by millions of users across more than 110 countries and regions worldwide. Building on this trust, we continue expanding our presence and bringing our innovations to more markets around the globe. Reolink remains committed to delivering advanced, reliable, and user‑centric solutions that empower people to protect what matters most. Position: Java Software Trainee Duration: 4-6 Months Full Time Internship Opportunity to Convert to Permanent Staff 5 Work Days Per Week Office Near Tai Seng MRT, Singapore' Tai Seng Exchange Tower B Job Responsibilities 5 Days, Onsite Full Time Internship From 2027 at Tai Seng Exchange Assist in the design, development, and optimization of backend systems and services Support refactoring and performance improvements of core system components Troubleshoot and solve technical issues with guidance from senior engineers Participate in system design discussions, focusing on scalability and reliability Contribute to the full software development lifecycle (development, testing, deployment) Job Requirements Bachelor’s or Master’s degree in Computer Science, Software Engineering, or related field Strong foundation in data structures, algorithms, operating systems, and networking Proficiency in Java or Node.js Basic understanding of databases (MySQL) and SQL Familiarity with backend concepts such as APIs, system design, and debugging Good problem-solving skills and willingness to learn in a fast-paced environment Nice to Have Exposure to Redis, Kafka, RocketMQ, Zookeeper, or Dubbo Experience with database schema design or SQL optimization (through projects/internships) Understanding of distributed systems or microservices architecture Internship or project experience in backend development Why Join Us Kickstart Your Engin

About Us “Capco, a Wipro company, is a global technology and management consulting firm. Awarded with Consultancy of the year in the British Bank Award and has been ranked Top 100 Best Companies for Women in India 2022 by Avtar & Seramount . With our presence across 32 cities across globe, we support 100+ clients across banking, financial and Energy sectors. We are recognized for our deep transformation execution and delivery. WHY JOIN CAPCO? You will work on engaging projects with the largest international and local banks, insurance companies, payment service providers and other key players in the industry. The projects that will transform the financial services industry. MAKE AN IMPACT Innovative thinking, delivery excellence and thought leadership to help our clients transform their business. Together with our clients and industry partners, we deliver disruptive work that is changing energy and financial services. #BEYOURSELFATWORK Capco has a tolerant, open culture that values diversity, inclusivity, and creativity. CAREER ADVANCEMENT With no forced hierarchy at Capco, everyone has the opportunity to grow as we grow, taking their career into their own hands. DIVERSITY & INCLUSION We believe that diversity of people and perspective gives us a competitive advantage. MAKE AN IMPACT Job Description: Experience:5.1-7 yrs Direct Responsibilities Analyze, Discuss, Document Solution architecture and design with leads and architects. Do backend development primarily and frontend development as secondary skill. Perform quality Unit, Integration tests (Test & Business Driven Development is preferred.) Engage with external vendor consultancy development and delivery team and do effective collaboration for delivery and development of product. Assist test team in performance & endurance testing. Write technical specifications. Propose technical solutions and improvements proactively, based on pr

We’re building a world of health around every individual — shaping a more connected, convenient and compassionate health experience. At CVS Health®, you’ll be surrounded by passionate colleagues who care deeply, innovate with purpose, hold ourselves accountable and prioritize safety and quality in everything we do. Join us and be part of something bigger – helping to simplify health care one person, one family and one community at a time. Position Summary Health100 is an AI‑native health technology platform that unifies pharmacies, providers, insurers, PBMs, and digital health solutions into a single, consumer‑focused ecosystem. Powered by Google Cloud AI, we’re reimagining personalized and connected health experiences. As a Senior Software Engineer for Health100, you will play a crucial role within a collaborative team — designing, developing, and maintaining backend services and APIs while ensuring releases are well-coordinated, fully prepared, and successfully deployed to production. The ideal candidate brings strong technical expertise in modern backend development, excellent problem-solving skills, and a proactive approach to production monitoring, issue triage, and cross-team coordination. This position is critical in maintaining high engineering standards, ensuring smooth release cycles, and driving operational excellence across the development lifecycle. *This role can be based anywhere in the US; hybrid or remote with preference for candidates to work out of our corporate headquarters in Woonsocket, RI. Responsibilities: Partner with technical leaders and the open-source community to contribute to technical designs, frameworks, roadmap definition, and requirements-gathering. Provide domain knowledge and engineering insight to guide early designs, ac

At Jamf, we believe in an open, flexible culture based on respect and trust. Our track record and thriving work environment all stem from the freedom we grant ourselves to get the job done right. We take pride in helping tens of thousands of customers around the globe succeed with Apple. The secret to our success lies in our connectivity, while operating with a high degree of flexibility. Work-life balance remains our priority while feeling connected is important to maintain our strong culture, achieve our goals, and thrive as #OneJamf. This role is offered as a hybrid in Brno, Czech Republic . We are only able to accept applications for those based in the Czech Republic or who have sponsorship to live and work in the Czech Republic . What you'll do at Jamf : At Jamf, we empower people to be their best selves and do their best work. You will join Ocean, the team that owns "Blueprints" - Jamf's implementation of Apple Declarative Device Management (DDM). Blueprints is how Jamf administrators declare the desired state of their Apple fleet and have it delivered reliably to hundreds of thousands of devices. This is a primarily frontend role. You'll spend most of your time in our micro-frontend layer, building the interfaces admins use to compose and manage Blueprints. Backend development is not expected: over time you'll grow comfortable reading and debugging the Java services your UI depends on, but that's a bonus, not a day-one requirement. You'll work in a close-knit agile team, developing new features, breaking down customer problems, and owning the areas you touch. As part of an international ART, you'll collaborate daily with engineers in Czechia and Poland, and join a team that knows the Blueprints domain deeply and is invested in bringing new members up to speed - with a clear onboarding path, a manager who runs regular 1:1s and cares about your growth, and space to learn Apple device management on the job. What you

Forward was founded in 2013 by four Stanford Ph.D.s, building the industry's first network digital twin: a mathematically accurate model of the production network. It's the foundation for autonomous networking, giving engineers and AI agents the ability to know the impact of every change before it touches production. That founding instinct still defines how we work. We're accurate and evidence-driven, relentless about clarity, and we'd rather be certain than comfortable, building a groundbreaking platform that transforms how teams run and secure networks across every major cloud and vendor environment. Global leaders like Goldman Sachs, PayPal, S&P Global, IBM, and Dell trust Forward, alongside fast-growing enterprises and government agencies, realizing an average of $14.2 million in annual benefits, according to IDC. Backed by top-tier investors, including A. Capital, Andreessen Horowitz, Goldman Sachs, MSD Partners, Omega Venture Partners, Section 32, and Threshold Ventures, and headquartered in Santa Clara, we're most proud of our team: curious people who'd rather build what doesn't exist than accept how things have always been done. Forward is currently seeking a Java Backend Software Engineer to work as part of our Apps - Server team. The work will involve developing our web server, REST APIs, and product core by writing clean and solid code that interacts with our other services and components. Responsibilities include: Developing new product features that leverage the network model to help users: visualize their network, understand how it behaves, see how it has evolved, answer specific questions, and plan changes Designing the data model for new product features Proposing and implementing REST APIs to support the Forward web application and to publish to customers Constructively reviewing product designs, technical design documents, and code changes Requirements: At least 5+ years of full lifecycle software development experience Expertise in Java (versi

Location - Bangalore Experience - 10 +yrs Skills and Qualifications : Experience in backend development with a strong focus on Java, Microservices ,Spring boot, Kafka and TDD. Specialization in building Java Spring Boot microservices and integrating with databases, message brokers, api-gateways Good knowledge of fundamentals with hands-on experience in Java (Desirable for candidate to have knowledge on latest versions - Java 17 or later) Good Sql fundamentals and data persistence frameworks (For eg JPA, Hibernate, Spring Data JDBC, Jooq etc) Knowledge on database index optimization (for eg PostgreSQL) ensuring performance efficiency Good hands-on experience with Kafka , containerization technologies(For eg Docker ), and Kubernetes Good hands-on experience with memory leak identification and performance tuning java microservices Test-driven development ( Code Coverage / CI - Integration / CI - Acceptance / CI - Performance ) experience and knowledge of automated test frameworks and tools Proven expertise in engineering scalable, robust and high-performance applications in on-prem and public cloud Good experience in drafting API design , building rest apis and good understanding of http, messaging protocols (JMS, Kafka etc) Good to have knowledge on integrating with aws services (For eg S3 , SQS, SNS, Lambda etc) Knowledge of Infra as code tools like Terraform(Desirable) Roles and Responsibilities Highly skilled engineer, specializing in building Java Spring Boot microservices and integrating with databases, message brokers, api-gateways etc Building high quality code, conducting code reviews, and ensuring adherence to best practices. Test-driven development experience and knowledge of automated test frameworks and tools Proven expertise in engineering and building scalable, robust, and high-performance applications in on-prem and public clo

The Platform team creates the technology that enables Spotify to learn quickly and scale easily, enabling rapid growth in our users and our business around the globe. Spanning many disciplines, we work to make the business work; creating the infrastructure, tooling, frameworks, and capabilities needed to welcome a billion customers. The Data Platform team develops and maintains the infrastructure that supports Spotify’s data ecosystem. Within Data Platform, the Data Collection product area builds infrastructure that makes it easier to collect and consume data at scale. You’ll join a team focused on making user behaviour data seamless and reliable for data teams across Spotify. What You'll Do Collaborate with product and engineering teams to build and support critical data infrastructure and datasets. Build systems that collect and process user behaviour data at scale. Help power Spotify’s personalization and recommendation systems, as well as the tools teams use to build and test new features. Design and evolve data architectures that support high data volumes and a broad range of internal users. Improve the reliability, scalability, and usability of our data infrastructure. Work across disciplines to solve complex data challenges and make an impact across Spotify. Who You Are You are an experienced Data Engineer, and proficient in backend development using Java. You are comfortable working with large-scale datasets using SQL and platforms such as BigQuery. You have experience with JVM-based data processing frameworks such as Flink, Beam, Dataflow, or Spark. You are familiar with DevOps practices, cloud infrastructure, containerized applications, and Kubernetes fundamentals. You have experience with data modeling and schema design. You care about high-quality code and engineering practices such as continuous delivery and automated testing.</

For over 20 years, Smartsheet has empowered teams to manage work seamlessly and scale solutions smarter. Now, in our most ambitious chapter yet, we are uniting human teams with AI agents. By orchestrating the work agents do best, automating manual tasks and uncovering insights at scale, we create the space for people to focus on what truly matters: judgment, creativity, and big thinking. That is magic at work, and it’s what we show up for every day. Smartsheet is a tech company with a human story to tell. We're here to empower teams to manage projects, automate workflows, and rapidly build new secure solutions, using simple no-code tools. We're revolutionaries – so for us changing the way the world works is all in a day's work. The Forms team builds one of the most widely used features in the Smartsheet ecosystem — the experiences that let our customers easily manage and collect intake from their own customers and internal teams. We're a vibrant team with engineers at every level — from early-career to senior — and we're responsible for making it simple and reliable for anyone to gather structured information at scale. We're deepening our investment in operational excellence and exploring how AI can make intake smarter, and we're looking for an Engineering Manager to help lead the team through this next chapter. You will lead and grow a team of engineers spanning all experience levels, coaching them to deliver high-quality, highly available backend systems on time and with lasting technical health. You'll bring strong technical judgment in backend development, architecture, and design to guide the team's decisions, own the roadmap creation and execution for the Forms team, partner closely with Product and cross-functional stakeholders, and help raise the bar on operational excellence for a feature that's critical to the Smartsheet experience. You Will: Lead, coach, and grow a team of engineers across all experience levels, building a culture of technical excellence,

We’re building a world of health around every individual — shaping a more connected, convenient and compassionate health experience. At CVS Health®, you’ll be surrounded by passionate colleagues who care deeply, innovate with purpose, hold ourselves accountable and prioritize safety and quality in everything we do. Join us and be part of something bigger – helping to simplify health care one person, one family and one community at a time. Position Summary: We are seeking a highly skilled backend-focused Senior Software Engineer to join our modernization team focused on transforming the legacy CVS pharmacy systems into a cutting-edge, cloud-native platform. As part of the team, you will play a crucial role in designing and developing microservices that drive the modernization of critical patient and drug domains. You will work on integrating cloud-native solutions, enhancing performance, and ensuring seamless operation within a highly scalable and secure environment. The ideal candidate will have extensive experience in backend development, system design, and a strong understanding of cloud-native software engineering principles. Responsibilities: · Design, build, and maintain scalable data pipelines to support analytics, ML, and operational reporting · Develop robust data ingestion, transformation, and integration workflows using Python, SQL, and modern data engineering frameworks · Build and maintain batch and streaming data pipelines leveraging technologies such as Kafka (or similar pub/sub tools) · Work with Google Cloud Platform (GCP) services, including Cloud Storage, Dataflow, Pub/Sub, BigQuery, Cloud Spanner and Cloud Functions · Develop and manage data APIs and interfaces (REST and GraphQL) to enable high-performance data access across microservices · Implement CI/CD automation fo

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars. SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next. ABOUT THE ROLE: We are seeking a talented Software Engineer to join our X Money team, focused on building a revolutionary global payment network that will serve over 600 million users and rival the world’s largest financial institutions. In this role, you will specialize in backend development, designing and optimizing robust microservices to ensure scalability, security, and reliability. You will support full-stack efforts, collaborate with cross-functional teams on payments, fraud detection, and compliance initiatives, and contribute to the creation of a high-scale financial products platform. This is an opportunity to work on greenfield projects in a fast-paced, startup-like environment, driving innovation at the intersection of AI and finance. RESPONSIBILITIES: Develop backend services, APIs, and data models to support high-volume, multi-user environments. Work with iOS, Android & Web client engineers to ship products. Design robust infrastructure and microservices for payments, transactions, growth, monetization, and engagement across platforms. Build and maintain fullstack features, including user dashboards, personalized experiences, content delivery, interactive tool

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars. SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next. ABOUT THE ROLE: We are seeking a talented Software Engineer to join our X Money team, focused on building a revolutionary global payment network that will serve over 600 million users and rival the world’s largest financial institutions. In this role, you will specialize in backend development, designing and optimizing robust microservices to ensure scalability, security, and reliability. You will support full-stack efforts, collaborate with cross-functional teams on payments, fraud detection, and compliance initiatives, and contribute to the creation of a high-scale financial products platform. This is an opportunity to work on greenfield projects in a fast-paced, startup-like environment, driving innovation at the intersection of AI and finance. RESPONSIBILITIES: Develop backend services, APIs, and data models to support high-volume, multi-user environments. Work with iOS, Android & Web client engineers to ship products. Design robust infrastructure and microservices for payments, transactions, growth, monetization, and engagement across platforms. Build and maintain fullstack features, including user dashboards, personalized experiences, content delivery, interactive tool

About Flexport: At Flexport, we believe global trade can move the human race forward. That’s why it’s our mission to make global commerce so easy there will be more of it. We’re shaping the future of a $10T industry with solutions powered by innovative technology and exceptional people. Today, companies of all sizes—from emerging brands to Fortune 500s—use Flexport technology to move more than $19B of merchandise across 112 countries a year. The recent global supply chain crisis has put Flexport center stage as we continue to play a pivotal role in how goods move around the world. We are proud to have the support of the best investors in the game who believe in our mission, solutions and people. Ready to tackle global challenges that impact business, society, and the environment? Come join us. The opportunity Global trade runs on data. Every shipment, every customs clearance, every delivery depends on the right information flowing through the right systems at the right time. At Flexport, data infrastructure is the foundation that enables billions of dollars in global commerce. We're looking for a Senior Software Engineer, Backend who will take end-to-end ownership of the data systems that power Flexport's global trade platform. In this role, you'll own critical data pipelines and architecture that process millions of supply chain events daily, ensuring that our customers have real-time visibility into their shipments across the world. As a Senior Software Engineer focused on Data Infrastructure and Backend development, you'll have deep technical ownership over the systems that ingest, process, store, and deliver data across Flexport. You'll architect solutions that handle the complexity of global trade, from tracking containers across oceans to coordinating multi-modal logistics, all while ensuring our data infrastructure scales reliably as we grow. You will Build strong relationships with producers and consumers of data across the organization. Partner