Senior Java Backend Developer Jobs

About Wolt At Wolt, we create technology that brings joy, simplicity and earnings to the neighborhoods of the world. In 2014 we started with delivery of restaurant food. Now we’re building the delivery of (almost) everything and you’ll find us in over 500 cities in 30 countries around the world. In 2022 we joined forces with DoorDash and together we keep on dreaming big and expanding across the globe. Working at Wolt isn’t always easy, but it’s definitely exciting. Here you’ll learn more, build more, and ship more than in most other companies. You’ll be challenged a lot, but also have a lot of fun on the way. So, if you’re a self-starter with drive and entrepreneurial spirit, this could be the ride of your life. About the team We, the Marketing Tech team, are looking for a passionate and driven Golang/Python Backend Software Engineer. We are a product-focused team that emphasizes enabling the scaling and efficiency of campaigns and marketing efforts both inside and outside of Wolt. The MarTech team is currently building internal services around marketing and consent use-cases to allow our marketing stakeholders to drive marketing campaigns in and out of the app, and ensure we provide and maintain a compliant experience throughout the whole process. We empower marketing with the tools to fully set up and run their campaigns independently so as not to be blocked by product or engineering. In our team, you can expect to face many different types of projects across the realm of acquiring users and keeping them engaged. You’ll work on both maintaining and expanding existing services, as well as planning and designing new ones. Our project types vary a lot, from services used in the core Wolt flow, services for automation or to enable our Marketing teams, ETL jobs, as well as streaming processing workers. Some examples of projects include our in-house built: Audience management tool in Golang Marketing attribution powered by Spark Consents management platform in Golang Bi

About the Team Our DD Labs team builds real-time autonomous delivery systems. The Planning & Decision-Making group is investing heavily in deep reinforcement learning to move beyond classical planning, learning policies that generalize across novel driving scenarios, handle long-tail edge cases, and improve continuously from large-scale fleet data. Our models jointly handle prediction and planning in a single unified architecture. Our stack is pure JAX end-to-end: the same code you train with is the code that runs on the robot. No C++ rewrites, no TensorRT export. A new policy goes from training to on-vehicle deployment in minutes. About the Role As a Senior/Staff Deep RL Engineer, you will design, train, and deploy deep reinforcement learning policies that make real-time driving decisions for our autonomous vehicles. You will own the full lifecycle, from problem formulation and reward design through large-scale distributed training to on-vehicle inference. You'll help define how learned components compose with the rest of the autonomy stack to produce robust, shippable behavior. You’re excited about this opportunity because you will… Formulate complex driving tasks as RL problems with well-shaped reward functions and expressive state/action representations. Design and train model-based deep RL agents using GPU-accelerated simulation at massive scale, including improving the simulator itself. Build and maintain distributed training infrastructure in JAX across large compute clusters. Build agentic optimization systems that automatically improve code, run experiments, analyze metrics, and iterate on RL policies with minimal human intervention. We’re excited about you because… BS/MS/PhD in CS, EE, Robotics, or a related field, with a strong foundation in reinforcement learning and deep learning. You have proficiency in using AI coding tools (e.g., Claude Code, Codex, Cursor) in the full software development lifecycle, including designing, generating code, testing,

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Community You Will Join: Airbnb’s public policy campaign team exists to further the interests of our community of hosts and guests with politicians, regulators, opinion leaders and others who shape the political and legal context for our business, helping them to understand the significant social and economic contributions of our platform. Across the region, we are engaged in hundreds of local conversations and negotiations with governments big and small. We engage governments at local, state, provincial and national levels directly and also use innovative advocacy and partnership strategies that actively involve our community and our stakeholders in making the case for fair, progressive home sharing rules. The Difference You Will Make: Airbnb’s Public Policy team aims to work closely with politicians, regulators, and the broader public to introduce them to Airbnb, highlight the significant social and economic contribution our business makes to local areas and its residents, and showcase best practices

About Wolt At Wolt, we create technology that brings joy, simplicity and earnings to the neighborhoods of the world. In 2014 we started with delivery of restaurant food. Now we’re building the delivery of (almost) everything and you’ll find us in over 500 cities in 30 countries around the world. In 2022 we joined forces with DoorDash and together we keep on dreaming big and expanding across the globe. Working at Wolt isn’t always easy, but it’s definitely exciting. Here you’ll learn more, build more, and ship more than in most other companies. You’ll be challenged a lot, but also have a lot of fun on the way. So, if you’re a self-starter with drive and entrepreneurial spirit, this could be the ride of your life. As a Software Engineer in Global Retail, you'll shape how customers discover, browse, and buy retail products - apparel, beauty, electronics, auto parts and more - across Wolt, DoorDash and Deliveroo. Retail is a large growth opportunity for the business, and our mission is to be the most trusted and magical way to shop the brands and local stores customers love. You'll play a key role in making that real - from product discovery through to shopping experience in the apps millions of people use every day. You’ll join an evolving area where we are replacing and improving parts of the existing consumer apps, building specific retail journeys within large-scale B2C applications. This means working in a complex environment where multiple teams own different parts of the same app, and where strong technical judgment is needed to create consistency, quality and speed across teams. What You’ll Do As a senior engineer in our group, you’ll work your magic in Go or Kotlin (and some Kotlin) helping shape how retail succeed with Wolt. You’ll have opportunities to: Design, build, and scale reliable systems that power retail experiences. Work across the full development lifecycle – from business logic and testing to cloud infrastructure and data streaming. Collabor

In a nutshell: IDEO (Shanghai) is in search of a Senior Industrial Designer who will create product designs and experiences that have a genuine impact on people’s lives, can generate ideas quickly without a lot of parameters, and lead clients and teams through the industrial design phase of a project. Why is this role important for IDEO’s work? A Senior Industrial Designer makes the biggest impact by strengthening the Industrial Design point of view at IDEO through work across a range of projects, from product interaction to software tools and applications to the web. Their skillset is critical to our business because they are able to work across disciplines, bringing their perspective to every project. We count on them to create tangible design expressions, and communicate the essence of these ideas. Once here you will: Work with people that come from diverse backgrounds (like design researchers, communication designers, business designers, and interaction designers) Get exposure to and involved with all aspects of the design process: user research, brainstorming, concept development, prototyping, working with engineers and manufacturers and design stewardship Go out in the field and build empathy with a user through activities Become a part of a culture that lets you both learn and teach while working with people outside of your immediate area of expertise What does IDEO offer you? IDEO is a place unlike any other. It’s a place where you can solve diverse, complex challenges for our clients or the organization, alongside thoughtful, intelligent individuals who lead with curiosity, empathy, and optimism. Sure we work hard, but we also intentionally craft moments that allow our community to pause, create, and connect. We encourage our community to bring their whole selves to work, respect the need for work-life balance, and allow for autonomy in the design process and your career. Some previous projects t

Why Sony Interactive Entertainment? Sony Interactive Entertainment isn’t just the Best Place to Play — it’s also the Best Place to Work. Sony Interactive Entertainment (SIE) is the company behind the PlayStation brand. As a subsidiary of Sony Group Corporation, we’re part of a proud legacy of innovation and excellence. SIE is a dynamic technology company, delivering cutting-edge hardware and network services to more than 100 million people and an entertainment leader, home to some of the most beloved and recognizable intellectual properties (IP) in the world. Our role at SIE is to create and nurture the experiences under the PlayStation brand, a name synonymous with entertainment excellence and creativity. Principle Duties / Responsibilities: In this role, you will lead manufacturing and production optimisation initiatives for several high-profile products from early-stage development through mass production and sustaining engineering phases. As a leader within our development team, you will build and maintain positive working relationships between technical teams, contract manufacturing partners and business/product owners to deliver on strategic product development and sustaining initiatives. A successful Senior Manufacturing Engineer is energetic, detail oriented, motivated and an excellent communicator. They should be familiar with the different stages of product development, manufacturing, project management methodologies and working with contract manufacturing partners to create best-in-class consumer electronic devices. The successful applicant is: Able to analyse production processes, schedules, methods and other data to provide management with justified recommendations for improving various manufacturing process. Focused on continuous production improvement opportunities Able to review and calculate labor, material and other production costs to identify areas of cost reduction and improve manufacturing efficiencies Well versed in quality control processes i

Our vision is to transform how the world uses information to enrich life for all. Join an inclusive team passionate about one thing: using their expertise in the relentless pursuit of innovation for customers and partners. The solutions we build help make everything from virtual reality experiences to breakthroughs in neural networks possible. We do it all while committing to integrity, sustainability, and giving back to our communities. Because doing so can fuel the very innovation we are pursuing. As a key leader within High Bandwidth Memory (HBM) Product Engineering Media Health team, you will spearhead and develop a high performing team driving Media Health Manufacturing and activities for Micron’s latest HBM products, both on DRAM and Interface die and a stacked product. You will lead a portfolio of Best-In-Class Next Generation HBM Product focused on the critical KPI’s Quality, Cost, Cycle Time and Scale. This include lead the manufacturing test flow development and validation, improve the device/stacked yield with most optimized extrinsic and intrinsic reliability through in depth circuit debug, test coverage optimization and strategy innovation, test time improvement for manufacturing flow and drive the DFT (design for test) strategy to stage new ideas to improve cost, cycle time and quality. You will also collaborate with cross functional team (Fab, Product Leads, Design, Technology Development, Design, Test Solution Engineering etc) with diverse expertise to achieve both strategic and tactical objectives and stay ahead on technology and product leadership. The future of HBM are exciting and dynamics. Micron is seeking experienced individuals that find technical challenges engaging and invigorating. Responsibilities: Optimized Test

GitLab is the intelligent orchestration platform for DevSecOps. GitLab enables organizations to increase developer productivity, improve operational efficiency, reduce security and compliance risk, and accelerate digital transformation. More than 50 million registered users and more than 50% of the Fortune 100* trust GitLab to ship better, more secure software faster. The same principles built into our products are reflected in how our team works: we embrace AI as a core productivity multiplier, with all team members expected to incorporate AI into their daily workflows to drive efficiency, innovation, and impact. GitLab is where careers accelerate, innovation flourishes, and every voice is valued. Our high-performance culture is driven by our values and continuous knowledge exchange, enabling our team members to reach their full potential while collaborating with industry leaders to solve complex problems. Co-create the future with us as we build technology that transforms how the world develops software. * Fortune 500® is a registered trademark of Fortune Media IP Limited, used under license. Claim based on GitLab data. Fortune 100 refers to the top 20% ranked companies in the 2025 Fortune 500 list, published in June 2025. Fortune and Fortune Media IP Limited are not affiliated with, and do not endorse products or services of GitLab. An overview of this role As a Senior Solutions Architect in GitLab’s global Solutions Architecture Center of Excellence, you’ll be the trusted technical advisor and pre-sales partner who helps customers unlock the full value of GitLab’s AI-powered DevSecOps platform. You will solve complex challenges across the software lifecycle by connecting GitLab, AI agents, security, and cloud-native capabilities to real business outcomes, guiding customers through digital transformation and modern software delivery. Reporting into the Senior Director and acting as the AI subject matter expert on a team of specialists, you’ll own technical s

Who we are 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 The Merchant Experience team builds the UI operating system and core experiences that power decades of growth for millions of businesses globally, enabling Stripe to be the business SaaS solution of choice for next-gen companies. We own the foundational platforms and product surfaces that merchants interact with every day - from the Stripe Dashboard to the frameworks and tooling that hundreds of Stripe engineers use to build world-class user interfaces. We're at an inflection point. AI is fundamentally changing how users interact with software, and we believe Stripe is uniquely positioned to reimagine what a merchant experience looks like in an AI-native world. At the same time, we're raising the bar on the quality and performance of everything we ship - because the millions of businesses that depend on Stripe deserve an experience that is fast, reliable, and crafted with care. What you'll do As a Senior Staff Engineer on the Merchant Experience team, you'll be a technical leader across 50+ Engineers responsible for shaping the next generation of how Stripe merchants interact with our products. You'll drive a step-function improvement in the quality and performance of our core surfaces, and help define what AI-powered merchant experiences look like at Stripe. Responsibilities Define technical strategy for merchant-facing experiences across Stripe, with a focus on quality, performance, and the integration of AI into core user workflows Lead t

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 Principal Software Engineer on Creator Services Data, you’ll be leading the company’s efforts to build the next generation Data Storage systems to power the millions of experiences on the Roblox Platform. We run the mission critical cloud services, Data Stores , Memory Stores , and Badges , which are crucial for storing game state such as inventory and scores, implementing leaderboards, server lists, and trading, and tracking player progress and achievements. Our team is also responsible for building dashboards to provide insights to Creators using cloud services including Client/Server Performance , Data Stores , and Memory Stores . Finally, our team owns the Roblox Extended Services platform, which provides the capability for large experiences to purchase additional resources for existing services like Data Stores and new services built around compute and generative AI. At its core, this team is focused on solving complex back end distributed systems and storage problems at scale. However, our scope extends to full stack projects spanning all the way from the infrastructure layer, through data storage and data pipelines, microservices, telemetry, game servers,

The mission of The New York Times is to seek the truth and help people understand the world. That means independent journalism is at the heart of all we do as a company. It’s why we have a world-renowned newsroom that sends journalists to report on the ground from nearly 160 countries. It’s why we focus deeply on how our readers will experience our journalism, from print to audio to a world-class digital and app destination. And it’s why our business strategy centers on making journalism so good that it’s worth paying for. The New York Times is continuing to expand its video journalism, identifying compelling visual stories across the depth and breadth of our report. We showcase the expertise of Times journalists on-camera, share urgent news updates, produce on-the-ground reporting, pioneering Visual Investigations, and video podcasts. We are looking for a Senior Producer to work on our Reporter Video team, a multi-disciplinary team of video journalists creating groundbreaking, short-form digital journalism. You are a team leader who works autonomously to identify critical stories, vet reporting, and structure powerful videos featuring NYT journalists both on and off platform. An experienced journalist with a track record of making sound editorial decisions is essential. Experience working on news, features, enterprise and investigative projects is an asset. You're a strong people manager, thoughtful storyteller and excellent collaborator. You'll serve as a go-to resource for colleagues, providing editorial guidance and constructive feedback, and must be comfortable enforcing deadlines and working in a fast-paced newsroom. This role will require working with desks across the newsroom and requires an effective communicator. This is a Tuesday - Saturday role and a hybrid position based in New York and includes regular attendance in the office four days each week. There may be some flexibility to work remotely per your departmental guidance. Responsibilities: Bui

About Interbrand Interbrand understands what it takes today to build the world’s most iconic brands. To support our clients in an ever more complex and fascinating world, we have renewed our commitment to both common global standards and greater empowerment, experimentation and entrepreneurialism. Interbrand is its people. We are a global team of highly diverse thinkers, makers and collaborators. We are proud of our heritage and often regarded as the university of branding. Over the past four decades, we have pioneered iconic work and invented many of the brand building tools that are now commonplace. In collaboration with many of the world’s leading brands, we are pioneering the future of brand building. In a world where people’s expectations are moving faster than businesses, we give our clients the confidence to make Iconic Moves that create desire and utility, reshape the competitive landscape and drive extraordinary results. The Interbrand Best Global Brands study/rankings are resources to our clients and the industry, providing proprietary data and insight for our role as client partner and commentator. We have published 18 books on brands and are often the reference point for university curriculum and professional associations. Today, through our own Academy, we aim to be the most impactful learning environment in the marketing world. Our Behaviours Our culture is informed by a set of behaviours we co-created as a business. Our behaviours give us space to experiment, permission to speak out, and a model of leadership that anyone in the business can adopt. Our behaviours are Lead with love, Be Brave, Listen First and Make it happen. We are proud of our behaviours. They make us, us. The opportunity You're a strategist who turns complexity into clarity and insight into action. You see the signal in the noise, ask better questions, and aren't afraid to challenge the brief. At Interbrand, you'll work across teams on brand,

Scale’s rapidly growing Global Public Sector team is focused on using AI to address critical challenges facing the public sector around the world. Our core work consists of: Creating custom AI applications that will impact millions of citizens Generating high-quality training data for custom LLMs Upskilling and advisory services to spread the impact of AI As a Full Stack Software Engineer (Forward Deployed), you’ll collaborate directly with public sector counterparts to quickly build full-stack, AI applications, to solve their most pressing challenges and achieve meaningful impact for citizens. At Scale, we’re not just building AI solutions—we’re enabling the public sector to transform their operations and better serve citizens through cutting-edge technology. If you’re ready to shape the future of AI in the public sector and be a founding member of our team, we’d love to hear from you. You will: Partner with public sector clients to scope, collect feedback and implement solutions for complex problems, including spending up to two weeks per month in client offices for feedback and delivery. Architect production-grade applications that integrate AI models with full-stack frameworks, managing everything from interactive UIs to backend APIs and systems. Deploy and manage infrastructure within cloud environments, ensuring the highest levels of system integrity, security, scalability, and long-term reliability. Contribute to core platform features designed to be reused across diverse international client use cases. Partner with design, product, and data teams to build robust applications aligned with the broader technical architecture. Ideally you’d have: Bachelor’s degree in Computer Science or a related quantitative field 5+ years of post-graduation, full-stack engineering experience with demonstrated proficiency in React (required), TypeScript, Next.js, Python, Node.js, PostgreSQL or MongoDB plus hands-on experience with Docker, Kubernetes, and Azure

Scale’s rapidly growing Global Public Sector team is focused on using AI to address critical challenges facing the public sector around the world. Our core work consists of: Creating custom AI applications that will impact millions of citizens Generating high-quality training data for custom LLMs Upskilling and advisory services to spread the impact of AI As a Full Stack Software Engineer (Forward Deployed), you’ll collaborate directly with public sector counterparts to quickly build full-stack, AI applications, to solve their most pressing challenges and achieve meaningful impact for citizens. At Scale, we’re not just building AI solutions—we’re enabling the public sector to transform their operations and better serve citizens through cutting-edge technology. If you’re ready to shape the future of AI in the public sector and be a founding member of our team, we’d love to hear from you. You will: Partner with public sector clients to scope, collect feedback and implement solutions for complex problems. Architect production-grade applications that integrate AI models with full-stack frameworks, managing everything from interactive UIs to backend APIs and systems. Deploy and manage infrastructure within cloud environments, ensuring the highest levels of system integrity, security, scalability, and long-term reliability. Contribute to core platform features designed to be reused across diverse international client use cases. Partner with design, product, and data teams to build robust applications aligned with the broader technical architecture. Ideally you’d have: Bachelor’s degree in Computer Science or a related quantitative field 5+ years of post-graduation, full-stack engineering experience with demonstrated proficiency in React (required), TypeScript, Next.js, Python, Node.js, PostgreSQL or MongoDB plus hands-on experience with Docker, Kubernetes, and Azure/AWS/GCP. Proven ability to architect scalable, production-grade applications with a stron

At Trustpilot, we're on an incredible journey. We're a profitable, high-growth FTSE-250 company with a big vision: to become the universal symbol of trust. We run the world's largest open customer review platform, and while we've come a long way, there's still so much exciting work to do. Come join us at the heart of trust! In this key role as our Senior Leadership Development Manager, you are responsible for driving a culture of continuous growth across Trustpilot. You will achieve this by designing and executing cutting-edge learning solutions that are strategically aligned with our long-term business goals, enabling Trusties to thrive. Your impact will be felt cross-functionally as you develop engaging training programmes and provide essential support to leaders, ultimately fueling both individual and organisational growth through impactful initiatives. What you’ll be doing: Lead the development and implementation of scalable learning programmes that empower Trustpilot’s global workforce and support our long-term vision. Design and deliver high-impact learning programmes using the latest methodologies and digital tools. Lead cross-functional projects to ensure impactful, timely delivery of learning initiatives with measurable results. Analyze complex learning challenges and create tailored solutions to meet organisational needs. Collaborate with stakeholders across regions to identify learning gaps and develop operational solutions that move the needle. Support the continuous development of our global Learning and Leadership Development Strategy, identifying business needs and proposing solutions that have business impact. Facilitate engaging and interactive learning experiences, from workshops to digital modules, that inspire continuous personal and professional growth. Measure the impact of learning initiatives, using feedback and data to inform ongoing improvement. Mentor colleagues, fostering a culture of knowledge sharing and continuous learning. Advoc