Java Backend Developer Jobs

About Backblaze Backblaze is the object storage leader in the open cloud movement, fueling customer success with cloud storage built purposefully to unlock budgets, unburden administrators, and unleash innovators. Together with our partners, we’re helping customers break free from the restrictive, overpriced legacy solutions that hold them back, and blaze forward with the full power of the open cloud in their hands. Founded in 2007, we scaled the business with less than $3 million in outside funding until 2021, when we did a traditional IPO on the Nasdaq stock exchange. Today, Backblaze generates over $100m in revenue and is the leading specialized storage cloud - managing over three billion gigabytes of data storage for 500K+ customers in 175+ countries, including businesses, developers, IT professionals, and individuals. But while there is a lot to celebrate in our past, there is almost as much opportunity ahead of us. We’re seeking a Sr. Software Engineer to join our team! What You'll Do: You will work on our storage platform which supports the B2 Object Storage and Computer Backup products, responsible for reliably storing the customer data. You will help improve durability, increase throughput, and drive architectural changes to support the long term requirements of our service. The Right Fit: 7+ years of OOP (Java, Rust, C++, C#, etc) in an enterprise environment (personal project work not included) Experience building large scale software systems running on thousands of servers Comfortable with all aspects of the software development lifecycle, including design, implementation, testing, and rollout Exhibits curiosity and seeks to understand before offering solutions Applies analytical thinking to ambiguous problems Bonus points for: Proficiency in Java or Rust Experience building and interpreting models, dashboards, or reports Familiarity with hard drive performance Understanding of Linux internals and file systems At this point, we hope you're feeling

It all started with an idea at Block in 2013. Initially built to take the pain out of peer-to-peer payments, Cash App has gone from a simple product with a single purpose to a dynamic ecosystem, developing unique financial products, including Afterpay/Clearpay, to provide a better way to send, spend, invest, borrow and save to our 50+ million monthly active customers. We want to redefine the world's relationship with money to make it more relatable, instantly available, and universally accessible. Today, Cash App has thousands of employees working globally across office and remote locations, with a culture geared toward innovation, collaboration and impact. We've been a distributed team since day one, and many of our roles can be done remotely from the countries where Cash App operates. No matter the location, we tailor our experience to ensure our employees are creative, productive, and happy. The Role At Cash App, we strive to build the best consumer financial products in the world. The Cash App Banking team aspires to make Cash App the primary place for our customers to store, manage, and move money across all their banking needs. We achieve this by providing various offerings including a range of deposit and transfer options, savings and automation tools, and a suite of benefits for Banking customers, all while ensuring a fast and reliable experience. As a staff software engineer on the Cash App Banking server engineering team, you will help lead the overall technical strategy of the team, through close collaboration across teams and disciplines. In addition, you'll drive cross-cutting architectural decisions and infrastructure improvements to make our systems more robust and scalable. You will also foster the growth of aspiring engineers to expand their scope of influence beyond their immediate teams. The things that you build will create significant impact at scale and will fundamentally change the consumer banking landscape as we know it today. You Wil

Staff Software Engineer - AI Research Infrastructure P-1215 At Databricks, we are obsessed with enabling data teams to solve the world’s toughest problems, from security threat detection to cancer drug development. We do this by building and running the world’s best data and AI platform so our customers can focus on the high-value challenges that are central to their own missions. The Databricks AI Research organization enables companies to develop AI models and agents using their own data, with technologies ranging from post-training open source LLMs to developing advanced multi-agent architectures. Databricks AI does so by producing novel science and putting it into production. Databricks AI is committed to the belief that a company’s AI models and agents are just as valuable as any other core IP, and that high-quality AI should be available to all. Job Description As a Staff Software Engineer, AI Research Infrastructure, you will be developing and running the research stack that powers Databricks AI Research. You will design and build services that schedule, orchestrate, and observe large‑scale training and inference experiment workloads across thousands of GPUs, improve our dev tooling and ensure that researchers can iterate quickly without sacrificing reliability, efficiency, or security. You’ll partner closely with research scientists, ML engineers, and platform teams to turn experimental workloads into robust, repeatable pipelines, and to push the limits of what our infrastructure can support. The Impact you will have As a Staff Software Engineer on the AI Research Infra Team at Databricks, you will: Design and implement infrastructure that supports large‑scale experiments, data processing, and model training (e.g., HPC clusters, GPU fleets, or cloud‑based systems) Enable researchers to go from idea to large‑scale experiment in minutes, not days, by building powerful abstractions for job submission, scheduling, and monitoring. Create tooling that improv

It all started with an idea at Block in 2013. Initially built to take the pain out of peer-to-peer payments, Cash App has gone from a simple product with a single purpose to a dynamic ecosystem, developing unique financial products, including Afterpay/Clearpay, to provide a better way to send, spend, invest, borrow and save to our 50+ million monthly active customers. We want to redefine the world's relationship with money to make it more relatable, instantly available, and universally accessible. Today, Cash App has thousands of employees working globally across office and remote locations, with a culture geared toward innovation, collaboration and impact. We've been a distributed team since day one, and many of our roles can be done remotely from the countries where Cash App operates. No matter the location, we tailor our experience to ensure our employees are creative, productive, and happy. The Role At Cash App, we strive to build the best consumer financial products in the world. The Cash App Banking team aspires to make Cash App the primary place for our customers to store, manage, and move money across all their banking needs. We achieve this by providing various offerings including a range of deposit and transfer options, savings and automation tools, and a suite of benefits for Banking customers, all while ensuring a fast and reliable experience. As a staff software engineer on the Cash App Banking server engineering team, you will help lead the overall technical strategy of the team, through close collaboration across teams and disciplines. In addition, you'll drive cross-cutting architectural decisions and infrastructure improvements to make our systems more robust and scalable. You will also foster the growth of aspiring engineers to expand their scope of influence beyond their immediate teams. The things that you build will create significant impact at scale and will fundamentally change the consumer banking landscape as we know it today. You Wil

It all started with an idea at Block in 2013. Initially built to take the pain out of peer-to-peer payments, Cash App has gone from a simple product with a single purpose to a dynamic ecosystem, developing unique financial products, including Afterpay/Clearpay, to provide a better way to send, spend, invest, borrow and save to our 50+ million monthly active customers. We want to redefine the world's relationship with money to make it more relatable, instantly available, and universally accessible. Today, Cash App has thousands of employees working globally across office and remote locations, with a culture geared toward innovation, collaboration and impact. We've been a distributed team since day one, and many of our roles can be done remotely from the countries where Cash App operates. No matter the location, we tailor our experience to ensure our employees are creative, productive, and happy. The Role At Cash App, we strive to build the best consumer financial products in the world. The Cash App Banking team aspires to make Cash App the primary place for our customers to store, manage, and move money across all their banking needs. We achieve this by providing various offerings including a range of deposit and transfer options, savings and automation tools, and a suite of benefits for Banking customers, all while ensuring a fast and reliable experience. As a staff software engineer on the Cash App Banking server engineering team, you will help lead the overall technical strategy of the team, through close collaboration across teams and disciplines. In addition, you'll drive cross-cutting architectural decisions and infrastructure improvements to make our systems more robust and scalable. You will also foster the growth of aspiring engineers to expand their scope of influence beyond their immediate teams. The things that you build will create significant impact at scale and will fundamentally change the consumer banking landscape as we know it today. You Wil

It all started with an idea at Block in 2013. Initially built to take the pain out of peer-to-peer payments, Cash App has gone from a simple product with a single purpose to a dynamic ecosystem, developing unique financial products, including Afterpay/Clearpay, to provide a better way to send, spend, invest, borrow and save to our 50+ million monthly active customers. We want to redefine the world's relationship with money to make it more relatable, instantly available, and universally accessible. Today, Cash App has thousands of employees working globally across office and remote locations, with a culture geared toward innovation, collaboration and impact. We've been a distributed team since day one, and many of our roles can be done remotely from the countries where Cash App operates. No matter the location, we tailor our experience to ensure our employees are creative, productive, and happy. The Role Cash App is offering a better way to file your taxes as an alternative to traditional online DIY tax preparation systems. As a Senior Software Engineer on our Tax Engine Server Engineering team, you will build and enhance the codebase that powers our tax filing experience. You will translate complex tax requirements into seamless software solutions that help millions of users confidently navigate and complete their returns with ease. You will collaborate closely with product managers, tax experts on our Tax Product Specialist team, and other cross-functional teams to ensure our platform remains accurate, reliable, and easy to use. If you are a skilled engineer who thrives on solving complex problems and wants to make a direct impact on a transformative product within a rapidly growing company, this role is for you. You Will Design, build, and own high-quality features and systems that power the Cash App Taxes filing experience, from federal and state form logic to e-file submission. Translate complex tax rules and requirements into clean, maintainable, and wel

It all started with an idea at Block in 2013. Initially built to take the pain out of peer-to-peer payments, Cash App has gone from a simple product with a single purpose to a dynamic ecosystem, developing unique financial products, including Afterpay/Clearpay, to provide a better way to send, spend, invest, borrow and save to our 50+ million monthly active customers. We want to redefine the world's relationship with money to make it more relatable, instantly available, and universally accessible. Today, Cash App has thousands of employees working globally across office and remote locations, with a culture geared toward innovation, collaboration and impact. We've been a distributed team since day one, and many of our roles can be done remotely from the countries where Cash App operates. No matter the location, we tailor our experience to ensure our employees are creative, productive, and happy. The Role Cash App is offering a better way to file your taxes as an alternative to traditional online DIY tax preparation systems. As a Senior Software Engineer on our Tax Engine Server Engineering team, you will build and enhance the codebase that powers our tax filing experience. You will translate complex tax requirements into seamless software solutions that help millions of users confidently navigate and complete their returns with ease. You will collaborate closely with product managers, tax experts on our Tax Product Specialist team, and other cross-functional teams to ensure our platform remains accurate, reliable, and easy to use. If you are a skilled engineer who thrives on solving complex problems and wants to make a direct impact on a transformative product within a rapidly growing company, this role is for you. You Will Design, build, and own high-quality features and systems that power the Cash App Taxes filing experience, from federal and state form logic to e-file submission. Translate complex tax rules and requirements into clean, maintainable, and wel

Who We Are Addepar is a global data and AI platform empowering investment professionals to turn complex financial information into actionable intelligence. Addepar unifies portfolio, market and client data in a total portfolio view and delivers AI-powered insights within investment and client workflows. More than 1,400 firms in nearly 60 countries use Addepar to manage and advise on nearly $9 trillion in assets. Its open platform integrates with nearly 650 software, data and consulting partners to power end-to-end investment operations across firms of all sizes and complexity. Addepar supports clients worldwide with offices in New York City, Salt Lake City, London, Edinburgh, Pune, Dubai, Geneva, Singapore and São Paulo. The Role The Platform Services team is at the core of accelerating Addepar’s platform scalability, elasticity, and global expansion. We play a pivotal role in driving innovation and standards for building distributed services and on-demand environments to meet the rapid scale of Addepar’s growth. Working at the critical intersection of application, infrastructure, and operations teams, we promote developer velocity and robust process automation. Working with a healthy mix of new technologies and existing core applications, the team thrives on solving complex challenges to deliver high-impact solutions. If you're passionate about creating true engineering leverage, this is the team for you. Applicants must have legal authorization to work in the country where this role is based on the first day of employment. Visa sponsorship is not available for this position. What You’ll Do Work with teams across the organisation to: Develop resilient distributed services and high quality tooling to support product operations and engineering Investigate and debug complex issues that span across teams and applications Drive software delivery and improve the engineering processes we use to develop and release software Who You Are Comfortable working independent

Who We Are Addepar is a global data and AI platform empowering investment professionals to turn complex financial information into actionable intelligence. Addepar unifies portfolio, market and client data in a total portfolio view and delivers AI-powered insights within investment and client workflows. More than 1,500 firms in 60 countries use Addepar to manage and advise on nearly $10 trillion in assets. Its open platform integrates with 650 software, data and consulting partners to power end-to-end investment operations across firms of all sizes and levels of complexity. Addepar supports clients worldwide with offices in New York City, Salt Lake City, São Paulo, London, Edinburgh, Geneva, Warsaw, Dubai, Pune and Singapore. The Role The Portfolio Services team is at the core processing Addepar’s client data. We play a pivotal role in enabling data to flow across our data platforms into our client’s instances. Working at the critical intersection of application, analyst, and operations teams, we promote developer velocity and robust process automation. Working with a healthy mix of new technologies and existing core applications, the team thrives on solving complex challenges to deliver high-impact solutions. If you're passionate about creating true engineering leverage, this is the team for you. Applicants must have legal authorization to work in the country where this role is based on the first day of employment. Visa sponsorship is not available for this position. What You’ll Do Work with teams across the organisation to: Develop resilient distributed services and high quality tooling to support product operations and engineering. Investigate and debug complex issues that span across teams and applications. Drive software delivery and improve the engineering processes we use to develop and release software. Who You Are Comfortable working independently, with a bias for action. Thrives in ambiguous spaces where there isn’t a clear solution. Enjoys digging into ne

Who We Are Addepar is a global data and AI platform empowering investment professionals to turn complex financial information into actionable intelligence. Addepar unifies portfolio, market and client data in a total portfolio view and delivers AI-powered insights within investment and client workflows. More than 1,400 firms in nearly 60 countries use Addepar to manage and advise on nearly $9 trillion in assets. Its open platform integrates with nearly 650 software, data and consulting partners to power end-to-end investment operations across firms of all sizes and complexity. Addepar supports clients worldwide with offices in New York City, Salt Lake City, London, Edinburgh, Pune, Dubai, Geneva, Singapore and São Paulo. The Role The Portfolio Services team is at the core processing Addepar’s client data. We play a pivotal role in enabling data to flow across our data platforms into our client’s instances. Working at the critical intersection of application, analyst, and operations teams, we promote developer velocity and robust process automation. Working with a healthy mix of new technologies and existing core applications, the team thrives on solving complex challenges to deliver high-impact solutions. If you're passionate about creating true engineering leverage, this is the team for you. Applicants must have legal authorization to work in the country where this role is based on the first day of employment. Visa sponsorship is not available for this position. What You’ll Do Work with teams across the organisation to: Develop resilient distributed services and high quality tooling to support product operations and engineering Investigate and debug complex issues that span across teams and applications Drive software delivery and improve the engineering processes we use to develop and release software Who You Are Comfortable working independently, with a bias for action Thrives in ambiguous spaces where there isn’t a clear solution Enjoys digging into new pr

Forward Deployed Senior Software Engineer (Migration Tooling – RunMyJobs) OUR MISSION At Redwood, we empower our customers with lights-out automation for their mission-critical business processes. ABOUT US Redwood Software is the leader in full-stack automation fabric solutions for mission-critical business processes. Our flagship SaaS platform, RunMyJobs (RMJ) , is the first composable automation platform specifically built for ERP environments. We enable organizations to orchestrate, manage, and monitor workflows across applications, services, and infrastructure — in the cloud or on premises. Our global team of automation experts, engineers, and customer success professionals work together to deliver seamless automation transformations. CORE VALUES One Team. One Redwood Make Your Own Weather Obsess over Customer Success Work the Problem Be Curious Own the Outcome Respect Each Other YOUR IMPACT We are seeking a Forward Deployed Software Engineer focused on migration tooling and customer onboarding to RunMyJobs (RMJ) . This role is part of an exciting new Forward Deployed Engineering team within the Global Professional Services team, at the intersection of Product Engineering and Go To Market teams. In this role, you will operate at the intersection of engineering and delivery. Your primary focus will be designing, building, and enhancing migration frameworks, tooling, and automation accelerators that enable customers to smoothly transition from legacy schedulers and automation platforms into RMJ. You will work closely with: Migration Architects to design scalable and reusable migration patterns Professional Services to enable efficient customer onboarding Engineering & Product to improve platform capabilities based on field learnings Customers (occasionally) to validate requirements, troubleshoot edge cases, and ensure successful implementations This is a forward-deployed engineering role — highly technical, impact-driv

Avaloq Consultant / Management Consultant Location: London (Hybrid) | Practice Area: Wealth & Asset Management | Type: Permanent Drive transformation across core banking and wealth management platforms using Avaloq The Role We are expanding our Wealth & Asset Management capability and are seeking experienced Avaloq professionals to support growing client demand across core banking and wealth platform transformation. You will play a key role in delivering complex change programmes, working across business and technology teams to maximise the value of the Avaloq platform and deliver scalable solutions for leading financial institutions. As AI continues to reshape financial services, you'll be expected to embrace AI-enabled ways of working, using approved AI and automation tools to enhance productivity, accelerate analysis, improve delivery quality, and support better client outcomes, while always applying human judgement and responsible AI practices. You'll also help clients identify opportunities to embed AI-enabled capabilities into future operating models where appropriate, supporting innovation while maintaining robust governance and oversight. What You’ll Do Support the delivery of Avaloq implementation, upgrade, enhancement and integration programmes, using approved AI-enabled tools where appropriate to accelerate delivery and improve quality. Configure and optimise Avaloq functionality across core banking, wealth management, payments, securities and reporting processes. Collaborate with business, operations and technology stakeholders to define functional and technical requirements, using AI to accelerate analysis, documentation and insight generation while maintaining appropriate human review. Support data migration, system integration and platform modernisation initiatives, leveraging AI-enabled automation where appropriate to improve efficiency, consistency and delivery outcomes. Act as a bridge between business and technology teams to ensure success

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 The Autonomous Freight Systems team is a brand new, AI-first engineering team in San Francisco. This team will own Flexport’s client-facing rates platform and the self-serve freight booking experience—two of the highest-leverage surfaces in our Client App that dictate how clients see pricing and book freight without manual intervention. As a Staff Engineer, you will be the technical anchor for our next-generation AI-powered rates platform. We aren't just building a UI; we are building AI agents that handle real logistics work: parsing complex rate sheets, managing pricing intelligence across ocean, air, and trucking, and making "Self-Serve" a reality for thousands of shippers. You will build the intelligence layer that allows clients to commit freight on technology alone, with no account executive and no operations touch. This is a ground-floor opportunity to shape technical direction, set up a new codebase, and build the platform that moves Flexport from an assisted-sales model to a tech-run one for the long tail of our client base. You will partner with Pricing, Sales, Ops, and Design on hard domain problems and ship to the most-used client

Secure Every Identity, from AI to Human Identity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure that enables organizations to safely embrace this new era. This work requires a relentless drive to solve complex challenges with real-world stakes. We are looking for builders and owners who operate with speed and urgency and execute with excellence. This is an opportunity to do career-defining work. We're all in on this mission. If you are too, let's talk. At Okta, our motto is "Always On" and nowhere do we embrace that more than in Technical Operations. We strive to build the most reliable and performant systems on the planet through the skillful use of automation. If you like to be challenged and have a passion for solving large-scale automation, testing, and tuning problems, we would love to hear from you. The ideal candidate is someone who exemplifies the ethics of, “If you have to do something more than once, automate it” and who can rapidly self-educate on new concepts and tools. You will work on: ● Mentoring, managing, and leading a team of SRE’s with a broad range of expertise and experience. ● Being an evangelist and advocate for security best practices, leading initiatives and projects to strengthen our security posture for our most critical infrastructure. ● Responding to production incidents, driving us to remediation as quickly as possible and determining how we can prevent them in the future. ● Triaging and troubleshooting complex production issues to ensure reliability and performance. ● Working closely with our stakeholders across the organization to ensure our new capabilities are aligned to our competing constraints of reliability, security, and delivery velocity. ● Partnering directly with recruiting and people ops to hire and retain the best talent in the world. ● Keep sharp eyes on our metrics, including vulnerability scanning and security posture,&nbsp

MongoDB is seeking an Engineering Manager to join the Atlas Clusters Organization. The organization is responsible for building MongoDB Atlas, our database-as-a-service offering and fastest growing product. Atlas allows users to deploy fault-tolerant, secure, globally distributed MongoDB clusters in just minutes. This includes developing software to interface with the three major cloud providers (AWS, Azure, and GCP) in order to bring security, durability, availability, and performance to all deployments of MongoDB. The Atlas Clusters Fleet Signal Management team is a product engineering team that builds machinery to rollout hardware and software to the Atlas data plane, detect regressions at scale, and automate remediative actions. The core mission is to establish platform stability by owning the rollout and monitoring systems designed to swiftly detect and mitigate potential issues. We are forming a new Atlas Clusters Fleet Signal Management team in the Dublin area. The Engineering Manager who fills this position will be pivotal in growing that team. We are looking to speak to candidates who are based in Dublin for our hybrid working model. What you’ll do Lead a team of motivated individual contributors who are eager to learn and grow Contribute to the code, design, and architecture of the systems your team develops Work with stakeholders throughout MongoDB to build our roadmap and product offerings Work with customers and support engineers to fix issues and become part of our on-call rotation Collaborate with team members to develop our codebase, best practices, and design principles Foster an inclusive and respectful work environment according to MongoDB's Core V