Senior Lead Java Full Stack Developer Jobs

About Us At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company. At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a "normalized" problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow, while ensuring that every improvement, no matter how small, is shared across the team to lift everyone up. If you’re the type of person who values curiosity over bureaucracy, and that AI is a partner in solving tough problems to keep the Internet moving forward, you’ll fit right in. Available Locations Quebec, Canada About the Role Account Executives, Channel Account Managers, Business Development Representatives, Solution Engineers, Customer Success, and Sales Operations - all working together help our customers adopt Cloudflare and create great Internet-enabled experiences. The sales team at Cloudflare helps customers solve real, technical problems while creating revenue streams that help the company provide free service to

As a Senior Software Engineer on our growing Battery team, you will design and develop backend services that support residential battery programs, building against industry-standard energy protocols such as OpenADR, IEEE 2030.5, and related smart grid communication standards while maintaining a strong security posture across our infrastructure. Working closely with leading battery providers, you will improve grid flexibility and help push virtual power plants forward towards a sustainable climate future. You would join a relatively new and growing team with the opportunity to own integrations and contribute to highly visible projects with significant client impact. Partnering with engineers, product, and OEMs, you will design backend services that provide direct client value and unlock the full potential of residential batteries. Main Responsibilities: What you'll do Build and maintain integrations with industry-standard energy protocols and specifications, including OpenADR, IEEE 2030.5, and related smart grid/DER communication standards Develop and maintain our client-facing REST API and the backend logic that powers it Build integrations with distributed internal services to abstract away complexity and enable new product capabilities Ensure proper security and data protection policies, procedures, and monitoring are in place Collaborate with product and engineering to continuously improve requirements and software quality Collaborate with other teams to enable new API features and help them build on top of utility client data Update utility-facing Web portal to support new integrations Drive and embody the “Dev Owns Quality” culture Write and maintain technical documentation Other duties as assigned Required Skills and Experience: What you need 5+ years of professional software engineering experience Experience building against industry energy specifications such as OpenADR, IEEE 2030.5, OCPP, or similar smart grid/DER communication standards Experience with the

At Lyft, our purpose is to serve and connect. We aim to achieve this by cultivating a work environment where all team members belong and have the opportunity to thrive. Lyft's Customer Care Operations organization manages over 1.7 million monthly customer interactions and serves as the company's primary direct touchpoint with riders, drivers, and businesses — spanning frontline support across multiple customer segments, a global BPO workforce, and the central functions that enable them to operate at scale. The Senior Manager of Support Excellence owns the enablement infrastructure that determines whether Lyft's support operation can scale efficiently, react nimbly, and maintain high standards: Knowledge Management, Quality, Learning & Performance, and Tooling Enablement. This is not a role for someone who wants to maintain and optimize — it's a role for someone who wants to reimagine. The right person brings a bold, integrated vision for how these functions work together with Operations, Product, and Technology to improve customer outcomes and accelerate Lyft's evolution into an AI-native, human-enhanced support organization. They will set the direction, hold the bar, and move at the pace the environment demands — with the industry expertise to know what "great" looks like and the conviction to pursue it. Reporting to the Director of Business Planning & Central Operations, this role leads a team of 4-6 direct reports and 40-50 indirects, each owning a distinct function on the team team. Responsibilities: Vision & Strategy Define and own an ambitious, integrated vision for how Knowledge Management, Quality, Learning & Performance, and Tooling Enablement work together — not as separate functions, but as a unified enablement system that improves customer outcomes and advances Lyft's AI-native support evolution. Expand active AI fluency to every function in the portfolio — from how knowledge is structured for AI retrieval, to how quality signals feed mod

About The Weather Company: The Weather Company is the world’s leading weather provider, helping people and businesses make more informed decisions and take action in the face of weather. Together with advanced technology and AI, The Weather Company’s high-volume weather data, insights, advertising, and media solutions across the open web help people, businesses, and brands around the world prepare for and harness the power of weather in a scalable, privacy-forward way. The world’s most accurate forecaster globally, the company reaches hundreds of enterprise clients and more than 360 million monthly active users via its digital properties from The Weather Channel (weather.com) and Weather Underground (wunderground.com). AI is part of how we work: Human judgment, expertise, and creativity remain essential and are amplified by AI. We expect everyone in this role to use AI thoughtfully and proactively to accelerate their performance, improve the quality of their work, and explore new possibilities. We are looking for people who are curious, adaptable, and excited to help shape an AI-enabled culture that delivers better outcomes for our customers and our company. Job brief: As a Senior Manager of Meteorological Technologies at The Weather Company, you will transform meteorological operations by strategically building meteorological tools and applying intelligent workflow automation and AI where they deliver real value. You'll partner with our 24x7 Forecast Operations team to evaluate emerging automation tools, build practical solutions and unlock higher productivity from our meteorologists. This is both a leadership and hands-on technical role requiring someone who can co-design, build, manage, sustain and rapidly evolve cloud-based technology solutions in an operational meteorological environment, co-architect AI workflows and assess cutting-edge tools with discernment, and influence—often across multiple projects simultaneously. You'll aggressively evaluate AI capabili

Who are we? Cohere is the leading security-first enterprise AI company. We build cutting-edge foundation AI models and end-to-end products that are designed to solve real-world business problems. We’re training and deploying frontier models for enterprises who are building AI systems. We believe that our work is instrumental to the widespread adoption of AI and we are looking for folks that want to be part of that. We obsess over what we build. Each one of us is responsible for contributing to increasing the capabilities of our models and the value they drive for our customers. Cohere is a team of researchers, engineers, designers, and more, who are all passionate about their craft. We are a global technology company headquartered in Toronto with key offices in London, New York City, San Francisco, Montreal, Paris, Berlin and Seoul. Join us! ========================== 📌 This is an active role, but we're currently building our talent pipeline so we're ready to move quickly once we have capacity to begin interviewing. At this stage, we're reviewing and shortlisting applications rather than scheduling interviews, so we aren't able to provide individual timelines or application status updates. If you're selected to move forward, we'll reach out as soon as we're ready to begin the interview process. To help us keep the process fair and efficient, we kindly ask that you don't follow up with the hiring team directly, as we won't have any additional updates to share until interviews begin. Thank you for your patience—we're looking forward to connecting with you when the process gets underway. ========================== Why This Role? We're hiring our first Senior Manager, Talent Development to help define how Cohere develops managers, leaders, and talent as we scale. This is a rare opportunity to own and shape a function from the ground up. Rather than inheriting a mature learning organization, you'll design the programs, frameworks, and ways of working that help one of th

About the Team DoorDash Labs is an independent team within DoorDash. We explore robotics and automation to transform last-mile logistics in the long term. If you have a passion for applying robotics solutions in a service used by millions of people, then we want to talk to you! About the Role As a Senior member of our Service Operations team at DoorDash Labs, you'll take on advanced diagnostic and repair work that keeps our robot fleet running. You'll work closely with the Associate Operations Manager and own your workload with minimal supervision. This is an on-site role with expectations of 100% in-office presence in Mesa, AZ. This position is available on the AM shift (7:00 AM – 3:30 PM), five days per week, including at least one weekend day. You’re excited about this opportunity because you will… Execute any Senior Service Technician task and: Diagnose complex, intermittent, or unusual faults in robotic systems, modular components, and support vehicles, often requiring advanced troubleshooting techniques and interpretation of complex data Perform advanced repairs, including component-level troubleshooting and fixes on intricate electrical systems, control units, and associated hardware, with minimal supervision Interpret complex technical manuals, schematics, and diagnostic flowcharts to guide troubleshooting efforts Meticulously document complex diagnostic processes, root cause hypotheses, non-standard troubleshooting steps, repair details, and component failure information in the service management system, contributing potential updates to the knowledge base Provide technical guidance, mentorship, and on-the-job assistance to Level 2 Technicians for challenging tasks Work independently to manage and prioritize assigned workload effectively Calibrates, configures, and maintains specialized diagnostic tools and test equipment We’re excited about you because you have… 2+ years of service work experience Curiosity and an inclination for all things mechanica

Who are we? Cohere is the leading security-first enterprise AI company. We build cutting-edge foundation AI models and end-to-end products that are designed to solve real-world business problems. We’re training and deploying frontier models for enterprises who are building AI systems. We believe that our work is instrumental to the widespread adoption of AI and we are looking for folks that want to be part of that. We obsess over what we build. Each one of us is responsible for contributing to increasing the capabilities of our models and the value they drive for our customers. Cohere is a team of researchers, engineers, designers, and more, who are all passionate about their craft. We are a global technology company headquartered in Toronto with key offices in London, New York City, San Francisco, Montreal, Paris, Berlin and Seoul. Join us! Role Overview: As a Senior Research Engineer in our Safety team, you will play a key role in helping develop safer, more secure, and more reliable models. Your primary focus will be on building tools to enable easy data synthesis, analysis, and management, for complex combinations of real and synthetic data that is used in both model training and evaluation. You will own the cohesive vision of these tooling repositories. You will work closely with a team of research scientists and engineers to create tooling that enables tighter experimentation cycles, better data coverage of the real world, and more scientific rigour. You will have a lot of autonomy and need to be opinionated about what areas of the codebase need elegance and standards, and where that would be overengineering. You will be given high level experimental problems that need to be solved with efficient pipelines, and design and implement the solutions. Your data analysis will collaboratively feed into modelling decisions and experimentation. This role combines expertise in software engineering, statistics, and data science. If any of these topics sound interesting t

Reddit is a community of communities. It’s built on shared interests, passion, and trust, and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 130 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit www.redditinc.com . Location: This role is based out of our London office. About the Role: As a Senior Growth Manager, UK on Reddit’s International Community team, you will be a key member of a cross-functional team responsible for deepening Reddit’s presence in the market. This is not a marketing role. Rather, you will drive user and ecosystem growth by building and scaling communities, executing local growth initiatives, coordinating cross-functional stakeholders, and leading initiatives that strengthen Reddit’s local ecosystem and user experience. This role combines strategic planning, growth-focused execution, cross-functional influence, market ownership, and community development. In this role, you will have a significant impact on shaping Reddit’s presence and success in the market, driving user and ecosystem growth at scale while strengthening engagement across local communities. Key Responsibilities: User & Community Growth Strategies: Establish and execute comprehensive strategies to grow the user base and nurture local communities. Growth Operations: Design, launch, and scale local growth programs aimed at strengthening Reddit's ecosystem of users, communities, and contributors. Apply a creative, entrepreneurial approach by continuously testing and evaluating new ideas to reach your objectives. Cross-functional collaboration: Serve as the local go-to person for providing market insights and local input to cross-functional teams, including Comms, Product, BD, and Marketing. Coordinate the execution of market-speci

The opportunity Polestar is accelerating the transition to sustainable mobility through electric performance. Behind that journey sits a powerful digital platform enabling everything from checkout and payments to order management, delivery, retail tools, and customer self‑service. At Polestar Digital, we build innovative, scalable solutions that power our global platform. You will join a focused team working across a critical part of the customer journey, delivering systems that customers globally and hundreds of internal users depend on every day. With real ownership, close collaboration, and global impact, you will play a key role in shaping the future of Polestar’s digital ecosystem. We are now looking for a Senior Software Developer to join our headquarters in Gothenburg, Sweden. Let us describe the challenge we offer As a Senior Software Developer, you will be part of a cross‑functional agile team responsible for designing and building high‑performance, scalable solutions that support Polestar’s global digital platform. You will take ownership of system architecture and technical decision‑making while working closely with Product Managers, Designers, and Operations teams to deliver reliable and impactful solutions. The role combines hands‑on development, system design, and collaboration, while also contributing to a strong engineering culture through mentoring and knowledge‑sharing. You will write clean, well‑tested code and contribute to building systems that are robust, scalable, and maintainable. At the same time, you will stay up to date with modern development practices and emerging technologies, including evolving paradigms such as agentic AI. What you'll do You will design, build, and evolve scalable digital solutions that power Polestar’s global platform. Your responsibilities include: Designing and implementing high‑performance, globally scalable systems Taking ownership of system architecture and contributing to technical decision‑making Writing clean

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. What You’ll Be Doing Handling inquiries and issues from global customers in multiple languages through various channels, including email, chat, and voice. Collaborating with internal and external stakeholders, such as product managers and the marketing team, to address complaints and feedback related to websites, products, platforms, and services, etc. Maintaining a strong understanding of company products to effectively communicate with customers in their preferred language. Establishing and nurturing strong relationships with company partners and external stakeholders. Escalating any queries or unresolved issues to Level 2/Supervisors as directed by the operations management when they can not be resolved within standard procedures. What We Look For In You A Diploma in finance, customer service & relations, linguistics, crypto-related studies, or a related field. At least 1 years of experience in language-related roles, including translation, interpretation, or localization. Proficiency in both spoken and written language relevant to the job, along with a high level of English & Spanish language proficiency. Ability to work independently in a fast-paced environment and deliver multilingual support. Willingness to work according to a given schedule

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. What You’ll Be Doing Handling inquiries and issues from global customers in multiple languages through various channels, including email, chat, and voice. Collaborating with internal and external stakeholders, such as product managers and the marketing team, to address complaints and feedback related to websites, products, platforms, and services, etc. Maintaining a strong understanding of company products to effectively communicate with customers in their preferred language. Establishing and nurturing strong relationships with company partners and external stakeholders. Escalating any queries or unresolved issues to Level 2/Supervisors as directed by the operations management when they can not be resolved within standard procedures. What We Look For In You A Diploma in finance, customer service & relations, linguistics, crypto-related studies, or a related field. At least 1 years of experience in language-related roles, including translation, interpretation, or localization. Proficiency in both spoken and written language relevant to the job, along with a high level of English & French language proficiency. Ability to work independently in a fast-paced environment and deliver multilingual support. Willingness to work according to a given schedule

Razorpay is one of India’s leading full-stack financial technology companies, powering the way businesses move, manage, and grow money. Founded in 2014 by Harshil Mathur and Shashank Kumar with a simple vision - to simplify payments for Indian businesses - we’ve since grown into a fintech powerhouse driving India’s digital payment revolution. Razorpay powers millions of businesses with a smarter, scalable stack that goes beyond transactions to help them truly build and grow. From building AI-native agentic payments, to AI-assisted fraud detection and real-time risk intelligence to automated reconciliation, smart payouts, and predictive financial insights, we are embedding intelligence across our stack to make money movement faster, safer, and more efficient. In close collaboration with ecosystem partners - including banks, networks, regulators - we are pioneering industry-first solutions that are shaping the next era of fintech Across India, Singapore and Malaysia, our products span everything from seamless checkouts to payroll automation - powering a fintech ecosystem that’s redefining how money moves across Asia. Today, that ecosystem supports everyone from early-stage startups to some of India’s largest enterprises, enabling them to accept, process, and disburse payments at scale while expanding into new ways of managing money more efficiently. Our scale speaks volumes: Razorpay processes $180+ billion in annualized transactions, powering leading businesses like Airbnb, Facebook, WhatsApp, Airtel, CRED, BookmyShow, Zomato, Swiggy, Lenskart, Mirae Asset Capital markets, Indian Oil, National Pension Scheme - and over 100 of India’s unicorns. With strong roots in India and growing operations in Southeast Asia, we are shaping the next chapter of financial technology across the region. We are backed by global investors including GIC, Peak XV Partners (formerly Sequoia Capital India & SEA), Tiger Global, Ribbit Capital, Matrix Partners, MasterCard, and Salesforce V

About Us At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company. At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a "normalized" problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow, while ensuring that every improvement, no matter how small, is shared across the team to lift everyone up. If you’re the type of person who values curiosity over bureaucracy, and that AI is a partner in solving tough problems to keep the Internet moving forward, you’ll fit right in. Available Locations Seoul, South Korea About the Role The Cloudflare APAC sales organisation operates as one integrated revenue system. Account Executives, Customer Engineers, Partner Account Managers, Business Development Representatives, Customer Experience Managers, Professional Services and Revenue Operations work as a continuous engine — winning, deploying, adopting, expanding, and scaling platform commitments across the full customer lifecyc

ABOUT THE TEAM At Mural, we're changing how teams collaborate, think, and make decisions together. The Growth & Engagement team owns the experiences that turn a single-player tool into a multiplayer habit: the loops that bring people back, help them find their work, and pull their colleagues into a mural. Mural's self-serve growth runs through these experiences, and engagement and retention are central to how the business grows. YOUR MISSION As Senior Product Manager, Growth & Engagement, you will own the end-to-end self-serve experience, from a user's first touch through activation, return usage, and conversion to paid. You will treat the full funnel as one system: acquisition, activation, engagement, retention, sharing, and monetization. You will run a high-tempo experimentation practice, partner deeply across Product, Engineering, Design, Data, Marketing, and Sales, and make the calls that turn occasional users into teams that rely on Mural every week. This is a role for someone who wants to own real growth outcomes, not just ship features. You will own the surfaces that decide whether Mural's self-serve engine grows. Engagement and retention here move the business directly, and you will own the full loop across growth and engagement rather than a narrow slice of it. You’ll have a rare end-to-end view of the funnel, from acquisition through in-product engagement. You will work alongside thoughtful product, design, and engineering partners who care about craft and impact. WHAT YOU'LL DO Own product strategy, roadmap, and execution for the self-serve growth and engagement experience, from first touch through activation and return usage Build and optimize the invite, sharing, and join experience Drive activation and retention by improving the moments that bring people back: home and dashboard, notifications, search, rooms and folders, comments, and more Partner closely with Marketing to connect acquisition and re-engagement with in-product activation across

About the Team The Future of Computing Research team is an Applied Research team within the Consumer Devices group focused on developing new methods and models as we advance forward in our mission of building AGI that benefits all of humanity. As a Software Engineer on the Future of Computing Research team, you will work together with both the best ML researchers in the world and the greatest design talent of our generation to push the frontier of model capabilities. About the Role We are looking for a Software Engineer to join our team to build tools and services that enable AI research, evaluation, and data generation workflows. The best work in this role will start with an ambiguous design question and turn it into working research systems. You will work closely with researchers, designers, and engineers to build the evaluation systems, synthetic data generation pipelines, review tools, and supporting platform services. The goal is to make these workflows easier to create, run, and trust without requiring bespoke engineering support for each new design concept. You will help ensure that research artifacts have a clear lifecycle, runs are reproducible and observable, and results provide useful evidence for product and model-training decisions while the underlying systems remain reliable and reusable. This role is based in San Francisco, CA. We use a hybrid work model of three days in the office per week and offer relocation assistance to new employees. In this role, you will: Build web applications, APIs, data models, and backend services for AI research workflows. Build tools to author and manage evaluation tasks, rubrics, graders, suites, and rollout configurations, including workflows for publishing, versioning, auditing, and sharing research artifacts. Automate evaluation runs and generate useful reports for design, research, and engineering teams. Support synthetic data generation workflows for multimodal and conversational research, including tools that comb