Java Developer Jobs

Lead Software Engineer-Simulation Company: The Boeing Company The Boeing Company is currently seeking a Lead Software Engineer-Simulation (Level 5) to join the Flight Simulation | Labs team located in Berkeley, MO. Flight Simulation | Labs provides comprehensive simulation and laboratory solutions for the design, development, and deployment of Boeing Defense Systems products. This position is for a Lead Software Developer on the Test Development Kit (TDK) project on the Flight Simulation Core Software team. TDK is a simulation architecture and toolset which comprises the core Modeling & Simulation infrastructure for multiple current and future generation Boeing defense platforms. The TDK product is critical to the success of the supported programs. The TDK Lead Software Engineer will lead the design, architecture, and development of the TDK framework, models and tools to facilitate the testing and analysis needs of the programs. The Lead Software Engineer will serve as a subject matter expert on the TDK product and simulation in general, and as a customer facing technical expert for the Flight Simulation | Labs (FSL) TDK product and capabilities. Position Responsibilities: Oversees the design, architecture, and development of simulation models, simulation visualizations, virtual environments/platforms and frameworks to enhance test performance, safety, and durability of software and hardware systems throughout the entire product lifecycle. Partners with stakeholders to advise on the review and identification of simulation requirements and dynamics of the systems being simulated. Oversees the design

About the job Senior Backend Engineer |100% Remote | India We are searching for a seasoned Sr Backend Engineer who will be responsible for developing and maintaining our backend systems, ensuring their efficiency, scalability, and reliability. The ideal candidate has a strong background in PHP and Java, with optional experience in Golang and Node.js. You should be well-versed in working with databases such as MongoDB, Redis, and Postgres, and have a solid understanding of cloud technologies, specifically AWS. Responsibilities Design, develop, and maintain backend systems and APIs to support our application's functionality. Collaborate with cross-functional teams, including front-end developers, product managers, and designers, to deliver high-quality solutions. Write clean, scalable, and well-documented code that adheres to industry best practices and coding standards. Perform code reviews and provide constructive feedback to peers to ensure code quality and consistency. Optimize and improve the performance of existing backend systems. Troubleshoot and debug production issues, providing timely resolutions. Stay up-to-date with emerging technologies and industry trends, identifying opportunities for innovation and improvement. Collaborate with DevOps teams to ensure smooth deployment and operation of backend services in the AWS cloud environment. Requirements Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent work experience). 5-10 years of professional experience as a Backend Engineer. Strong proficiency in Java/Golang is a must. Experience with Node js is a plus. In-depth knowledge of database technologies, including MongoDB, Redis, and Postgres. Solid understanding of cloud computing platforms, particularly AWS. Familiarity with containerization technologies such as Docker and orchestration tools like Kubernetes. Proficiency in writing efficient and optimized SQL queries. Experience with version control systems, such as Gi

Who we are At Twilio, we’re shaping the future of communications, all from the comfort of our homes. We deliver innovative solutions to hundreds of thousands of businesses and empower millions of developers worldwide to craft personalized customer experiences. Our dedication to remote-first work , and strong culture of connection and global inclusion means that no matter your location, you’re part of a vibrant team with diverse experiences making a global impact each day. As we continue to revolutionize how the world interacts, we’re acquiring new skills and experiences that make work feel truly rewarding. Your career at Twilio is in your hands. . Hiring and how we work We use Artificial Intelligence (AI) to help make our hiring process efficient. That said, every hiring decision is made by real Twilions! Also, while we are a remote-first company, you may be asked to report in person on an ad-hoc basis for team gatherings, functional off-sites or customer meetings. . See yourself at Twilio Join the team as Twilio’s next Software Engineer L2 (Messaging Channels). About the job This position is needed to power the future of communications by developing the connectivity, compliance and rich messaging features required to enable adoption of new messaging channels and drive continued growth of existing channels such as WhatsApp, RCS and Facebook Messenger. Our team navigates the complexities of requirements across many channels to enable Twilio customers to have a unified and seamless experience. We enable startups, non-profits and Fortune 500 companies to send billions of messages a year on our platform. We are looking for candidates passionate about designing, developing, deploying and operating software solutions at scale to help Twilio deliver the best user experience for modern, rich messaging. Responsibilities In this role, you’ll: Build High-Scale APIs: Design, develop, and maintain high-performance REST APIs and bac

Who we are At Twilio, we’re shaping the future of communications, all from the comfort of our homes. We deliver innovative solutions to hundreds of thousands of businesses and empower millions of developers worldwide to craft personalized customer experiences. Our dedication to remote-first work , and strong culture of connection and global inclusion means that no matter your location, you’re part of a vibrant team with diverse experiences making a global impact each day. As we continue to revolutionize how the world interacts, we’re acquiring new skills and experiences that make work feel truly rewarding. Your career at Twilio is in your hands. . Hiring and how we work We use Artificial Intelligence (AI) to help make our hiring process efficient. That said, every hiring decision is made by real Twilions! Also, while we are a remote-first company, you may be asked to report in person on an ad-hoc basis for team gatherings, functional off-sites or customer meetings. . See yourself at Twilio Join the team as a Staff Mobile Software Engineer for Stytch, where you'll shape the next generation of identity and fraud prevention products. About the job As a Staff Mobile Software Engineer you will help scale Stytch’s core identity and fraud products as we bring Stytch capabilities to Twilio’s full customer base, delivering secure, developer-first identity and fraud prevention experiences. You’ll build mobile SDK products that power authentication, fraud detection and prevention as well as emerging agentic identity use cases. You’ll partner closely with product and engineering leadership to design and deliver high-impact customer-facing features, and evolve our platform for Twilio’s scale. This is a rare chance to operate like a startup within Twilio: you’ll work in a high-ownership environment with startup speed, backed by Twilio’s reach and scale. Responsibilities Build and own the mobile SDKs for Stytch’s identity and fraud detection platforms

At Freddie Mac, our mission of Making Home Possible is what motivates us, and it’s at the core of everything we do. Since our charter in 1970, we have made home possible for more than 90 million families across the country. Join an organization where your work contributes to a greater purpose. Position Overview: Are you looking for a career that enables you to bring your technology and operations expertise to influence and develop tools / solutions that will improve an organizations Identity Governance capability? Freddie Mac is seeking a creative hands-on IAM Senior Developer to be a member of the Identity and Access Management (IAM) team within the Enterprise Business Technology Operation (BTO) organization. You will be working to build innovative solutions for improving our operational efficiency through automation, increasing user satisfaction with improved user experiences and helping to modernize our technology stack by leveraging SailPoint,AWS/Cloud native technologies. Our Impact: The Enterprise BTO organization enables business operational excellence through the flexible use of technology. The department provides IT strategic services (software development, enhancements, and production support) to support the needs of the Enterprise groups - External Relations and Corporate Communications, Finance, Human Resources, Internal Audit, Legal, Operational Resilience, and Regulatory Affairs. This role will be focused within IAM and often have intersections with the other above listed business lines. Delivery of IAM solutions to enable self-service capabilities Delivery of integrations between IAM systems and other systems Collaboration with other technology teams to advance our technical capabilities, automate and optimize processes to meet business challenges. Your Impact: Be an active member of multiple high-performing teams. Provide technical leadership, contributions and identify trends, patter

Staff Engineer About LaunchDarkly Engineering LaunchDarkly helps engineering organizations ship software and AI with speed, safety, and control. Our platform gives teams the confidence to release gradually, target experiences to the right audiences, learn through experimentation, understand what is happening in production, and respond quickly when risk appears. Our engineers build the systems, services, SDKs, developer tools, cloud infrastructure, and product experiences that make this possible. The work spans high-scale distributed systems, reliable data and event pipelines, intuitive enterprise workflows, and AI-powered capabilities that help teams manage the next generation of software delivery. LaunchDarkly’s SDKs are used in systems that perform trillions of feature flag evaluations each day, giving our engineering work a direct connection to the reliability and customer experience of software around the world. As the company grows, we are expanding beyond traditional feature management into experimentation, observability, and AgentControl—helping customers control more of the software and AI lifecycle. That creates an unusually broad set of technical challenges, visible customer impact, and room for engineers to shape what comes next. We believe in the power of teams. We work with humility, openness, curiosity, and care; we value clear communication, thoughtful technical judgment, inclusive collaboration, and a strong sense of ownership. We encourage people to apply even when they do not meet every qualification listed below. We are interested in the experience, perspective, and potential you would bring to the role. About the role Staff scope at LaunchDarkly is defined by impact rather than title alone. The specific domain may include platform infrastructure, APIs, SDKs, data systems, observability, experimentation, feature management, or AI/agent capabilities. As a Staff Engineer at LaunchDarkly, you will provide technical leadership beyond a single team. Yo

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. As a Backend Engineer, you will have the independence, opportunity, and end-to-end responsibility to help us build a critical, complex set of backend systems that support the creators of games and other experiences within our Roblox ecosystem. The Creator Success Team empowers Roblox to be the best development platform for creating 3D social experiences, allowing our creators to publish compelling content within the Roblox ecosystem. This includes services and solutions around the Creator Hub, Developer Forum, and Creator Dashboard. You will create and own mission-critical services in this cross-discipline team within our Roblox ecosystem. As a team, we believe in fast iteration and are biased toward action while keeping the long view. We have numerous exciting projects ahead of us for the years to come, including but not limited to: Build ML-driven services and large scale data pipeline to drive player insights and optimise monetization opportunities for creators Build next generation communication platform providing creators with powerful tools to manage the player community, organize virtual events, and collect player feedback Build a state-of-the-art remote configuration/experiment plat

The Applications Development Technology Lead Analyst is a senior level position responsible for building robust, high-performance, large-scale applications. The overall objective of this role is to lead applications systems analysis and programming activities. Responsibilities: * Partner with multiple management teams to ensure appropriate integration of functions to meet goals as well as identify and define necessary system enhancements to deploy new products and process improvements * Resolve variety of high impact problems/projects through in-depth evaluation of complex business processes, system processes, and industry standards * Provide expertise in area and advanced knowledge of applications programming and ensure application design adheres to the overall architecture blueprint * Utilize advanced knowledge of system flow and develop standards for coding, testing, debugging, and implementation * Develop comprehensive knowledge of how areas of business, such as architecture and infrastructure, integrate to accomplish business goals * Provide in-depth analysis with interpretive thinking to define issues and develop innovative solutions * Serve as advisor or coach to mid-level developers and analysts, allocating work as necessary * Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency. Qualifications: * 5 to 8 years of relevant experience in Apps Development or systems analysis role * Extensive experience system analysis and in programming of software applications * Hands-on experience in

The Applications Development Technology Lead Analyst is a senior level position responsible for building robust, high-performance, large-scale applications. The overall objective of this role is to lead applications systems analysis and programming activities. Responsibilities: * Partner with multiple management teams to ensure appropriate integration of functions to meet goals as well as identify and define necessary system enhancements to deploy new products and process improvements * Resolve variety of high impact problems/projects through in-depth evaluation of complex business processes, system processes, and industry standards * Provide expertise in area and advanced knowledge of applications programming and ensure application design adheres to the overall architecture blueprint * Utilize advanced knowledge of system flow and develop standards for coding, testing, debugging, and implementation * Develop comprehensive knowledge of how areas of business, such as architecture and infrastructure, integrate to accomplish business goals * Provide in-depth analysis with interpretive thinking to define issues and develop innovative solutions * Serve as advisor or coach to mid-level developers and analysts, allocating work as necessary * Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency. Qualifications: * 6 to 9 years of relevant experience in Apps Development or systems analysis role * Extensive experience system analysis and in programming of software applications * Hands-on experience in

The Applications Development Technology Lead Analyst is a senior level position responsible for building robust, high-performance, large-scale applications. The overall objective of this role is to lead applications systems analysis and programming activities. Responsibilities: * Partner with multiple management teams to ensure appropriate integration of functions to meet goals as well as identify and define necessary system enhancements to deploy new products and process improvements * Resolve variety of high impact problems/projects through in-depth evaluation of complex business processes, system processes, and industry standards * Provide expertise in area and advanced knowledge of applications programming and ensure application design adheres to the overall architecture blueprint * Utilize advanced knowledge of system flow and develop standards for coding, testing, debugging, and implementation * Develop comprehensive knowledge of how areas of business, such as architecture and infrastructure, integrate to accomplish business goals * Provide in-depth analysis with interpretive thinking to define issues and develop innovative solutions * Serve as advisor or coach to mid-level developers and analysts, allocating work as necessary * Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency. Qualifications: * 5-8 years of relevant experience in Apps Development or systems analysis role * Extensive experience system analysis and in programming of software applications * Hands-on experience in We

Toast creates technology to help restaurants and local businesses succeed in a digital world, helping business owners operate, increase sales, engage customers, and keep employees happy. The AI Agent & Experience team is Toast's internal platform team for AI. We build the infrastructure, governance, and developer tooling that makes AI a reliable, scalable force multiplier across the entire product development lifecycle. Our products include the LLM Proxy, AI Key Management, Observability pipelines, the Claude Plugin Marketplace, and autonomous agents that participate directly in the software development lifecycle. As a Senior Software Engineer on this team, you'll be hands-on building the systems that other Toast engineers depend on every day: the LLM proxy, agentic workflows, and the plugin marketplace that brings AI-native development practices to teams across the company. A day in the life (Responsibilities) Design, build, and ship features across AI platform infrastructure, including the LLM proxy, AI key management, and observability pipelines Develop and extend autonomous agents that participate in the SDLC, such as the AI Review GitHub App and Developer Platform MCP integrations Build on and contribute to the internal plugin marketplace, developing plugins that encode Toast's architectural standards and quality practices into AI assistant behavior Implement MCP (Model Context Protocol) services and service templates that make it faster and easier for teams across Toast to build AI-powered workflows Write high-quality, well-tested code and participate in design and code reviews Collaborate with engineers, product managers, and platform teams to understand developer needs and translate them into reliable platform solutions Contribute to the team's adoption of agentic development practices and tooling Leverage cutting edge AI tools to enhance your development workflow, improve velocity, and help pioneer new approaches to building - contributing to a c

OKX will be prioritising applicants who have a current right to work in Hong Kong, and do not require OKX's sponsorship of a visa. Please note that Hong Kong is a group-level service hub, and OKX does not carry on a business of operating a virtual asset trading platform in Hong Kong. Who We Are At OKX, we believe that the future will be reshaped by crypto, and ultimately contribute to every individual's freedom. OKX is a leading crypto exchange, and the developer of OKX Wallet, giving millions access to crypto trading and decentralized crypto applications (dApps). OKX is also a trusted brand by hundreds of large institutions seeking access to crypto markets. We are safe and reliable, backed by our Proof of Reserves. Across our multiple offices globally, we are united by our core principles: We Before Me , Do the Right Thing , and Get Things Done . These shared values drive our culture, shape our processes, and foster a friendly, rewarding, and diverse environment for every OK-er. OKX is part of OKG, a group that brings the value of Blockchain to users around the world, through our leading products OKX, OKX Wallet, OKLink and more. About The Opportunity We are looking for talented, impact-driven Mobile Engineers to join our engineering organization in Hong Kong. In this role, you will build and scale high-performance, resilient native mobile applications that power OKX’s core product ecosystems—ranging from high-concurrency payment and trading engines to user acquisition, engagement, and product growth systems. You will work on cross-functional engineering challenges at global scale, partnering closely with product design, backend architecture, security, and regional teams. What You'll Be Doing Build & Scale Native Mobile Apps: Design, develop, and maintain modular, reliable native mobile features (iOS or Android) used by millions of global users. Architect Core Systems: Drive technical decision-making on mobile architecture, API design, performance

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. As a Senior Software Engineer (Backend) on the Co-Experience team, you will work on high-visibility initiatives that define the future of age-appropriate communication. You will build and maintain the services behind a social ecosystem that keeps interactions safe, civil, and meaningful across diverse age groups. We are kind, highly collaborative, and draw on a mix of startup and large company backgrounds to iterate faster within Roblox. Our primary product is a platform-level Party System. As the heartbeat of social interaction on Roblox, this system enables users to coordinate, form groups, and stay connected as they navigate across servers and immersive experiences. We already have a strong foundation of chat, private gameplay, gameplay mechanics, and creator APIs. We need your expertise to strengthen the backend infrastructure underneath it, build out new features, and accelerate our path toward product-market fit. As we scale, your work will directly impact our global community and support the company's top-line growth. You Will: Collaborate within a cross-functional team that includes product, design, UXR, frontend and backend engineering. Take end-to-end ownership of projects. Drive

We are a global team of innovators and pioneers dedicated to shaping the future of observability. At New Relic, we build an intelligent platform that empowers companies to thrive in an AI-first world by giving them unparalleled insight into their complex systems. As we continue to expand our global footprint, we're looking for passionate people to join our mission. If you're ready to help the world's best companies optimize their digital applications, we invite you to explore a career with us! As a Senior Salesforce Developer at New Relic, you will be responsible for building and maintaining our Salesforce org. You will work closely with our Sales Revenue & Finance teams to automate processes and build custom applications on the Salesforce platform. In this role, you will be responsible for the full development life cycle, from Design and Solution to deployment and maintenance. The ideal candidate will have 5+ years of experience as a Salesforce developer and be proficient in Apex, Lightning Web Components and Visualforce. They will also have experience with integrations and be able to work with other team members or independently. Duties & Responsibilities Design, develop, test, deploy, and maintain high-quality Salesforce.com solutions Configure Salesforce.com to meet business requirements Write Apex classes, triggers, Visualforce pages, and Lightning Web Components Integrate Salesforce.com with other systems (as needed) Perform data migrations Stay up to date on the latest Salesforce.com features Handle multiple projects simultaneously Work closely with business analysts, project managers, and other developers Adhere to coding standards and best practices Required Skills and Qualifications 5+ years of experience in Salesforce development, configuration, and customization Advanced Apex programming skills, including batch jobs, triggers, web services, and unit testing Experience with Lightning Components, Visualforce, and Force.com integration techno

About Stripe Stripe is a financial infrastructure platform for businesses. Millions of companies—from the world’s largest enterprises to the most ambitious startups—use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work ahead. That means you have an unprecedented opportunity to put the global economy within everyone’s reach while doing the most important work of your career. About the team Service Infrastructure enables Stripe’s engineers to build and ship products using efficient, reliable, service oriented architectures. This organization sits at the boundary between Infrastructure and Product where they engineer Stripe’s service frameworks, standard user-facing API semantics, async orchestration platforms, developer tooling, and mission critical product infrastructure (e.g. webhook fulfillment). Key priorities for this group include delivering an amazing internal developer experience, enabling Stripes to effectively leverage Infrastructure platforms, and driving systemic improvements to Stripe’s API availability. What you’ll do As an Engineering Manager of Managers within the Service Infrastructure organization, you will lead multiple teams, collaborate with infrastructure and product engineering leaders, and advance Stripe’s architecture. You will operate some of the company’s most critical services and you will collaborate with Stripe’s product engineering teams to develop frameworks and abstractions that accelerate the company’s most important product launches. Responsibilities Collaborate with high-visibility teams and their stakeholders to support key engineering initiatives. Provide hands-on technical leadership (architecture/design, vision/direction/requirements setting, and incident response processes) for your reports. Understand user needs and pain points to prioritize the right engineering work at the right time to enable p