Backend Developer Jobs

About Backblaze Backblaze provides reliable, high-availability cloud storage trusted by consumers, SMBs, enterprises, and developers in over 150 countries. Backblaze B2 Cloud Storage supports data-intensive workloads including backup, media, analytics, and modern AI pipelines. Our teams focus on building secure, durable, scalable systems with a strong emphasis on application security from day one and protecting customers to keep them safe. While there is a lot to celebrate in our past, there are greater opportunities ahead of us. About the Role We are seeking a Back-End Engineer for our Computer Backup Team. This team focuses on the services supporting our Computer Backup product. In this role, you will build and maintain systems to back up and restore exabytes of data. We are looking for an engineer who is excited to learn to develop high-performance, highly multithreaded architectures. We value versatility and are looking for someone comfortable designing and working across any technology as our needs evolve. Responsibilities Design and develop highly scalable, performant services and APIs in a Java ecosystem. Integrate AI coding agents and frameworks into your workflow to accelerate development, refactor legacy components, and improve code quality. Collaborate on the full technical lifecycle, including estimation, design, development, and delivery. Collaborate across the organization to ensure project success. You will often engage with QA, Data Centers, Marketing, Product Management, Support, Legal/Compliance, and Security to gather necessary context and requirements to implement solutions correctly, help customers, and solve problems. Diagnose complex issues and maintain the stability of large-scale production systems. Collaborate across functional teams and provide technical leadership to foster engineering excellence. Required Qualifications A broad track record of project deliveries and successfully shipping software systems. 3+ years of experience with Java

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. About The Opportunity We are looking for a sharp, hands-on Growth Product Manager to join OKX's Growth team and own the programs that drive user acquisition, activation, and retention at scale. You will design, ship, and iterate on growth campaigns, referral mechanics, and incentive systems that directly move our core business metrics. OKX is one of the world's leading crypto exchanges, serving over 50 million users globally. As we scale our US and European presence in a rapidly evolving regulatory landscape, our Growth team sits at the intersection of product, data, and go-to-market. If you want to do the most impactful growth work in crypto right now, with real budget, real data, and real users, this is the seat. What You’ll Be Doing Define the growth product vision and own the roadmap and set the strategic direction for where we invest, what we build, and how we win across key markets. Design, ship, and iterate on growth campaigns and features with clear hypotheses, rapid experimentation cycles, and measurable outcomes. Read data like a native: independently conduct funnel analysis, cohort segmentation, and channel ROI modeling to identify the highest-leverage growth opportunities and make fast resource allocation decisions. Build fraud-resistant growth systems by de

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. About the Opportunity You will be responsible for the core architecture design and technical delivery of an enterprise-grade AI Native engineering platform, driving the deep integration of large language models, AI Agents, knowledge capabilities, and the software development lifecycle. The platform will support intelligent capabilities across requirement analysis, solution generation, coding collaboration, test automation, and environment orchestration.This role focuses on engineering-grade AI implementation in complex R&D scenarios. You are expected to turn model capabilities into reusable, scalable, and governable platform capabilities, and continuously drive the evolution of the engineering platform toward an AI Native architecture. What You’ll Be Doing Lead the overall architecture design and core capability development of the AI Agent platform, including task orchestration, tool invocation, context management, memory mechanisms, and multi-agent collaboration. Drive the implementation of AI Native capabilities in engineering workflows , including AI coding, technical solution generation, test case generation, test report generation, and automated environment deployment. Build the knowledge augmentation layer for the platform, including the d

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 The Strategic Institutional Partnerships (SIP) team signs bespoke partnerships with banks, payment providers, wealth platforms and other financial or tech intermediaries. Some want to offer crypto trading, custody or stablecoin services to their own clients (B2B2C). Others want to use OKX liquidity and infrastructure for their own business (B2B). None of these are standard onboardings. Each one needs its own commercial terms, contracts, technical integration, and regulatory alignment on both sides. You take each partnership from signed intent to live, growing volume. You are the one person accountable to the client and to every OKX team involved: Legal, Compliance, Product, Engineering, Operations, and Institutional Coverage. You negotiate the deal, run the project, and hand over a partnership that is already producing volume. Your initial market focus is the EU, where OKX operates under MiCA and MiFID II. The role itself is global. You report to the Global Head of Strategic Partnerships. What You'll Be Doing Commercial Project Coordination. You act as the central instance coordinating the executi

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. Role Overview We are seeking an experienced Overseas Operations Manager (P2P) to drive strategic growth and operational excellence across key overseas markets. This role requires deep understanding of P2P market mechanics, merchant ecosystem dynamics, regional payment infrastructures, and competitive positioning. The ideal candidate has hands-on experience operating P2P markets at leading exchanges (e.g., Binance, Bybit, Bitget) and can independently formulate expansion strategies while delivering measurable growth outcomes. Key Responsibilities Market Expansion & Growth Strategy Develop and implement regional P2P expansion strategies to ensure sustainable and stable business growth Monitor regional regulatory developments and assess their impact on P2P business models Continuously adjust market strategy based on competitive landscape and market shifts P2P Merchant & Ecosystem Management Design and optimize advertiser (merchant) onboarding, segmentation, and incentive structures Maintain close engagement with key merchants to ensure liquidity depth and spread competitiveness Improve complet

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. Role Overview We are seeking an experienced Overseas Operations Manager (P2P) to drive strategic growth and operational excellence across key overseas markets. This role requires deep understanding of P2P market mechanics, merchant ecosystem dynamics, regional payment infrastructures, and competitive positioning. The ideal candidate has hands-on experience operating P2P markets at leading exchanges (e.g., Binance, Bybit, Bitget) and can independently formulate expansion strategies while delivering measurable growth outcomes. Key Responsibilities Market Expansion & Growth Strategy Develop and implement regional P2P expansion strategies to ensure sustainable and stable business growth Monitor regional regulatory developments and assess their impact on P2P business models Continuously adjust market strategy based on competitive landscape and market shifts P2P Merchant & Ecosystem Management Design and optimize advertiser (merchant) onboarding, segmentation, and incentive structures Maintain close engagement with key merchants to ensure liquidity depth and spread competitiveness Improve complet

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. Role Overview We are seeking an experienced Overseas Operations Manager (P2P) to drive strategic growth and operational excellence across key overseas markets. This role requires deep understanding of P2P market mechanics, merchant ecosystem dynamics, regional payment infrastructures, and competitive positioning. The ideal candidate has hands-on experience operating P2P markets at leading exchanges (e.g., Binance, Bybit, Bitget) and can independently formulate expansion strategies while delivering measurable growth outcomes. Key Responsibilities Market Expansion & Growth Strategy Develop and implement regional P2P expansion strategies to ensure sustainable and stable business growth Monitor regional regulatory developments and assess their impact on P2P business models Continuously adjust market strategy based on competitive landscape and market shifts P2P Merchant & Ecosystem Management Design and optimize advertiser (merchant) onboarding, segmentation, and incentive structures Maintain close engagement with key merchants to ensure liquidity depth and spread competitiveness Improve complet

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 Team Our company, specializing in blockchain and web3 technologies, places a high emphasis on security and reliability. We are seeking individuals who are deeply knowledgeable in operating systems, browsers, DApps, smart contract security, and programming language behaviors. Responsibilities include identifying potential risks such as private key storage and designing leakage prevention solutions. What You’ll Be Doing: Design, develop, and maintain real-time and batch data processing pipelines using Flink, ensuring high performance and scalability. Responsible for the architecture design and development of Flink streaming systems, tailoring solutions to complex business requirements. Collaborate with data scientists to support feature engineering and develop feature stores for machine learning models in production. Work closely with cross-functional teams, including AI, compliance, risk, and engineering, to provide robust and scalable data solutions. Troubleshoot and resolve performance bottlenecks and technical challenges in real-time stream processing, ensuring system stability and scalability

Job Description Business Development Manager - West About us We are a pre-IPO company backed by a distinguished group of strategic partners and some of the world’s most influential climate tech funds. With strong traction in shipments and several major customer wins, the market now recognizes the value of our technology and the impact it will have on the future of the industry. We have a world-class R&D organization, an extensive patent portfolio and a strong leadership team which is scaling the company up across all functions. We are headquartered in Austin, TX, and have a state-of-the-art manufacturing facility in Saltillo, Mexico, with room for significant expansion. Increasingly, end customers are willing to pay a premium for solutions featuring “Infinitum Inside.” Our OEM partners are successfully leveraging this differentiation to achieve higher close rates and command greater margins. In short, we believe we have crossed the chasm—introducing breakthrough technology into a traditionally conservative sector. We are now ready to scale our go-to-market team substantially and are seeking team members who are passionate about rapid growth, eager to learn, and excited to tackle the challenges ahead as we make this journey together. The role As a Business Development Manager - West, you will focus on penetrating critical verticals such as data centers, healthcare, and high-tech manufacturing along the Western US regions. This role requires a strategic thinker who can build executive-level relationships and drive complex deals. Responsibilities Develop and execute strategic account plans targeting high-value verticals such as data centers, healthcare, and high-tech manufacturing, with a focus on hyper scalers, colocation providers, and design/build firms. Identify and engage key decision-makers including data center owners, developers, facility engineers, and design consultants to create demand for Infinitum’s motor technology. Influence mechanical

Job Description Business Development Manager - Midwest About us We are a pre-IPO company backed by a distinguished group of strategic partners and some of the world’s most influential climate tech funds. With strong traction in shipments and several major customer wins, the market now recognizes the value of our technology and the impact it will have on the future of the industry. We have a world-class R&D organization, an extensive patent portfolio and a strong leadership team which is scaling the company up across all functions. We are headquartered in Austin, TX, and have a state-of-the-art manufacturing facility in Saltillo, Mexico, with room for significant expansion. Increasingly, end customers are willing to pay a premium for solutions featuring “Infinitum Inside.” Our OEM partners are successfully leveraging this differentiation to achieve higher close rates and command greater margins. In short, we believe we have crossed the chasm—introducing breakthrough technology into a traditionally conservative sector. We are now ready to scale our go-to-market team substantially and are seeking team members who are passionate about rapid growth, eager to learn, and excited to tackle the challenges ahead as we make this journey together. The role As a Business Development Manager - Midwest, you will focus on penetrating critical verticals such as data centers, healthcare, and high-tech manufacturing along the Mid Western US regions. This role requires a strategic thinker who can build executive-level relationships and drive complex deals. Responsibilities Develop and execute strategic account plans targeting high-value verticals such as data centers, healthcare, and high-tech manufacturing, with a focus on hyper scalers, colocation providers, and design/build firms. Identify and engage key decision-makers including data center owners, developers, facility engineers, and design consultants to create demand for Infinitum’s motor technology. Influence m

Job Description Business Development Manager - East About us We are a pre-IPO company backed by a distinguished group of strategic partners and some of the world’s most influential climate tech funds. With strong traction in shipments and several major customer wins, the market now recognizes the value of our technology and the impact it will have on the future of the industry. We have a world-class R&D organization, an extensive patent portfolio and a strong leadership team which is scaling the company up across all functions. We are headquartered in Austin, TX, and have a state-of-the-art manufacturing facility in Saltillo, Mexico, with room for significant expansion. Increasingly, end customers are willing to pay a premium for solutions featuring “Infinitum Inside.” Our OEM partners are successfully leveraging this differentiation to achieve higher close rates and command greater margins. In short, we believe we have crossed the chasm—introducing breakthrough technology into a traditionally conservative sector. We are now ready to scale our go-to-market team substantially and are seeking team members who are passionate about rapid growth, eager to learn, and excited to tackle the challenges ahead as we make this journey together. The role As a Business Development Manager - East, you will focus on penetrating critical verticals such as data centers, healthcare, and high-tech manufacturing along the Eastern US regions. This role requires a strategic thinker who can build executive-level relationships and drive complex deals. Responsibilities Develop and execute strategic account plans targeting high-value verticals such as data centers, healthcare, and high-tech manufacturing, with a focus on hyper scalers, colocation providers, and design/build firms. Identify and engage key decision-makers including data center owners, developers, facility engineers, and design consultants to create demand for Infinitum’s motor technology. Influence mechanical

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 Team The AI Engineering team is responsible for integrating different AI models with different business lines. You'll need to understand how these models function in diverse domains and develop efficient integration solutions. This team is building the company's crawler platform, supporting multiple areas such as Compliance, Trading, Financial Products, and Business Intelligence. What You’ll Be Doing Understand different AI models’ feature Understand different business domains’ feature Provide integration solutions for AI models into the business domain Maintain systems’ high availability and high throughput Improve technology best practices and code reviews for peers Build and maintain various AI infrastructure / platform What We Look For In You Bachelors in Science / Technology / Engineering / Mathematics Experience in AI Agent / RAG engineering solutions Experience in Microservices / API development with Java/SpringBoot/SpringCloud/Python/Langchain Knowledgeable in multi-threading and distributed architecture. Understanding of mainstream messaging frameworks including Kafka etc. Knowledge of different d

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 Team We sit on the front lines of OKX's security and compliance mission. Our charter is to build the flexible, scalable, and intelligent AI systems that detect and prevent identity fraud, account takeover, and large-scale organized abuse — in real time and at the scale of a global financial platform. We own the core identity-risk capabilities that decide, millions of times a day, whether an account can be trusted: identity trust signals, behavioral risk modeling, relationship and cluster intelligence, and face, liveness and document verification. We work shoulder-to-shoulder with Product, Risk, Compliance, and Engineering to turn the hardest adversarial problems in crypto into production-grade defenses that protect good users and the open financial system. About the Role We are looking for a Senior AI Engineer to design, build, and own key identity-risk and trust models at OKX. You will build models that combine identity verification results, device and geo data, and user behavior into trust and risk signals, and use graph and clustering methods to uncover organized, industrialized fraud. This is an

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 As an Infra Product Manager, you will be responsible for the design, development, and lifecycle management of Web3 cross-business infrastructure products, with a focus on core components such as central data services, market data systems, labeling systems, asset category management, and algorithm platforms for Wallet, DEX and other businesses. You will collaborate closely with engineering, data, and business teams to ensure products meet the performance, security, and scalability requirements of Web3 businesses. This role demands strong product thinking, technical depth, and insight into the Web3 industry to help the team build an efficient and reliable Web3 Infra system. What You’ll Be Doing Central Data Services Management : Oversee the design of central data services for Web3 cross-business domains, including data collection, integration, storage, querying, and distribution. Ensure real-time data accuracy, security, and support for complex business needs and multi-platform environments. Market Data System Development and Optimization : Contribute to the product design a

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 As an Infra Product Manager, you will be responsible for the design, development, and lifecycle management of Web3 cross-business infrastructure products, with a focus on core components such as central data services, market data systems, labeling systems, asset category management, and algorithm platforms for Wallet, DEX and other businesses. You will collaborate closely with engineering, data, and business teams to ensure products meet the performance, security, and scalability requirements of Web3 businesses. This role demands strong product thinking, technical depth, and insight into the Web3 industry to help the team build an efficient and reliable Web3 Infra system. What You’ll Be Doing Central Data Services Management : Oversee the design of central data services for Web3 cross-business domains, including data collection, integration, storage, querying, and distribution. Ensure real-time data accuracy, security, and support for complex business needs and multi-platform environments. Market Data System Development and Optimization : Contribute to the product design a