Java Backend Engineer - Card (Fiat)

Join Binance, the foremost global blockchain ecosystem and the world’s largest cryptocurrency exchange, serving over 300 million users across 100+ countries. Renowned for our exceptional security, transparency in user funds, rapid trading engine, and extensive digital asset offerings, we are at the forefront of building an inclusive financial ecosystem. Our diverse services span trading, finance, education, research, payments, institutional solutions, and Web3 innovations, all aimed at advancing financial freedom and access worldwide.We are on the lookout for a talented Backend Java Engineer to join our Global Payment Card, Fiat team. This role is ideal for a seasoned professional with around 5 years of experience in backend development, specifically with Java technologies. You will be instrumental in architecting and developing robust, scalable, and secure payment solutions. If you possess a solid foundation in payment systems or fintech and are passionate about Web3 and AI technologies, this is a remarkable opportunity to be part of our innovative global payment initiatives.

Senior Java Developer About the OpportunityWe are seeking a Senior Java Developer to join an impactful international project. This position is 100% in Spanish, offered as a contractor role and is fully remote from LATAM. Role ObjectiveTo design, develop, and implement robust and scalable backend solutions in Java, ensuring quality, performance, and adherence to best practices in enterprise environments. Main ResponsibilitiesDevelop and maintain backend applications in JavaDesign and implement RESTful APIsParticipate in architecture design and technical decision-makingApply best practices such as clean code and SOLID principlesConduct unit and integration testingEngage in code reviews and mentorshipCollaborate with teams using agile methodologiesResolve incidents in production environments

About the RoleWe are seeking an experienced and motivated Senior Backend Engineer (generalist) with a robust background in Java and preferably Kotlin to join our dynamic team. In this remote position, you will play a pivotal role in developing our product from the ground up. Your responsibilities will include integrating with enterprise systems, scraping and analyzing large datasets, and creating systems that empower users to utilize LLMs for generating scalable sales insights—extracting critical information from millions of public documents.You could be the ideal candidate if you: Are an accomplished developer with experience in Enterprise B2B SaaS or Big Data processing within the JVM ecosystem, with Kotlin as a plus.Have a history of impactful engineering experience in a startup or smaller organization.Are enthusiastic about engaging in all aspects of backend development and have experience collaborating within small teams in fast-paced startup environments.Possess familiarity with the following technologies: Kotlin (Backend)Google Cloud Platform (GCP)Google Cloud SQL for PostgreSQLFirebasePythonHave experience with any of the following (not mandatory):Natural Language GenerationEnterprise API integrationsPrompt EngineeringLarge Scale Web Scraping & ParsingAre proficient in both written and spoken English.Our Work CultureCustomer-Centric Approach - We pride ourselves on putting customers at the heart of everything we do.Rapid Execution - We operate with a sense of urgency and decisiveness, always striving to gain momentum.Joy in the Journey - We intentionally create an environment that is both energizing and enjoyable, fostering camaraderie and resilience within our teams.Hands-On Engagement - We believe that the best ideas emerge from close engagement with our work, embracing challenges and complexities.

About the Role As a Weekend Backend Engineer at sportygroup, you will play a pivotal role in crafting microservices within a distributed deployment environment, primarily focusing on containerization using Docker and Kubernetes. Your responsibilities will extend beyond creating simple CRUD applications; you will engage with the intricate logic of complex systems that cater to millions of users daily. Our system, built from the ground up three years ago, allows you to work with cutting-edge technologies without the burden of legacy code. Given our extensive user base, we prioritize stability and reliability. Our commitment to 24/7 team coverage aims to position sportygroup as the premier sporting platform worldwide. Our Technology Stack (Expertise in all not required) Language: Java 17 Frameworks: Spring Boot (Tomcat, Netty), Spring Data, Spring Cloud Architecture: Microservices, REST APIs, Message Queues Database: MySQL, MyBatis, ShardingSphere, MongoDB Caching: Redis (AWS ElastiCache), ElasticSearch Message Queue: RocketMQ Cloud: Docker, Kubernetes, AWS Monitoring: Grafana, Prometheus, Loki, Tempo, AWS CloudWatch Your Responsibilities Work on a Friday-Tuesday shift pattern, including weekends. Develop highly scalable backend systems for millions of mobile users. Collaborate with Project Managers and fellow developers to identify new features and user stories for new or revised applications and complex development projects. Engage in code reviews with peers and managers to ensure adherence to the original vision and established architectural patterns. Respond promptly to support calls for production applications to diagnose and resolve issues effectively. Participate actively in team ceremonies such as planning, grooming, product demonstrations, and retrospectives. Mentor less experienced team members. Your Qualifications At least 3 years of experience in a relevant role. Must reside in Europe or Latin America. Preferred experience with Spring Boot, Spring Cloud, Spring Data, and iBATIS. Strong background in developing highly scalable web backends. Experience in designing highly transactional systems. Proficiency in Object-Oriented Design (OOD) and related principles.

joinready seeks a Java Backend Developer to join its remote technical team. This position focuses on building backend systems and providing technical support to colleagues. Candidates should be comfortable with hands-on coding and have a solid understanding of backend development principles. What you will do Design and implement backend services using Spring Boot. Handle service discovery and configuration management with Eureka and Config Server. Develop solutions in environments that use OpenShift and Kubernetes (OSE). Apply design patterns like Circuit Breaker and Bulkhead to strengthen system resilience. Write and maintain unit tests with Mockito. Incorporate design patterns and hexagonal architecture into daily work. Assist team members in solving technical challenges. Contribute insights from previous team leadership experience. Requirements Experience with Java backend development and Spring Boot. Familiarity with Eureka, Config Server, OpenShift, and Kubernetes (OSE). Knowledge of design patterns, especially Circuit Breaker and Bulkhead. Ability to write unit tests using Mockito. Understanding of hexagonal architecture. Strong problem-solving skills and a collaborative approach. Background in team leadership is valued.

Join Binance, the world's leading blockchain ecosystem and largest cryptocurrency exchange by trading volume and registered users. We empower over 300 million users across more than 100 countries with our commitment to security, transparency in user funds, rapid trading engine performance, deep liquidity, and a comprehensive array of digital asset products. Our offerings span trading, finance, education, research, payments, institutional services, Web3 functionalities, and more, as we harness the potential of digital assets and blockchain technology to create an inclusive financial ecosystem that enhances the freedom of money and broadens financial access globally.We are seeking a Senior Software Engineer with 5-7 years of robust experience in Spring Boot development to architect, build, and sustain high-performance, resilient distributed systems. The ideal candidate will possess a strong foundation in Java programming, demonstrate familiarity with microservices architecture, and thrive in a dynamic and fast-paced work environment. If you are passionate about cutting-edge technology and eager to make an impact in the financial sector, we would love to hear from you!

Join Binance, the forefront of the global blockchain revolution, and be part of the team driving innovation in the world’s largest cryptocurrency exchange, recognized for its unparalleled trading volume and user base. With over 300 million users across 100+ countries, we are committed to providing industry-leading security, transparency in user funds, rapid trading engine capabilities, and a vast array of digital asset products. Our offerings encompass trading, finance, education, research, payments, institutional services, Web3 functionalities, and more. Our mission is to harness the potential of digital assets and blockchain technology to create an inclusive financial ecosystem, advancing monetary freedom and enhancing financial access for individuals globally.We are actively seeking a Senior Java Backend Engineer (Web3 Data) to spearhead the design and development of cutting-edge on-chain data processing and computation pipelines. In this pivotal role, you will architect high-performance, scalable, and reliable backend systems that efficiently parse, transform, and analyze blockchain data in real-time across multiple chains.This position demands a robust background in Java microservices, distributed systems, and data-intensive computation, coupled with a deep understanding of Web3 ecosystems and on-chain data analytics. You will collaborate closely with blockchain researchers, data engineers, and backend teams to deliver low-latency APIs and generate large-scale data insights that power our DeFi and on-chain analytics products.

Alt is revolutionizing the world of alternative assets, starting with the burgeoning $5 billion trading card market. Our platform empowers collectors to buy, sell, store, and finance their cards seamlessly, and is supported by industry leaders such as Stripe, Coinbase, Seven Seven Six, and renowned athletes like Tom Brady and Giannis Antetokounmpo. Our next ambitious goal is to implement real-time pricing at scale, the Alt Value that drives every transaction, loan, and product on our platform.What We Are Looking For:We are in search of a Pricing Associate who will serve as an essential bridge between extensive sports card knowledge and innovative valuation strategies. In this pivotal role, you will not just be a pricing expert; you will be a strategic collaborator influencing the future of sports card valuation and market insights. Your contributions will significantly shape how Alt comprehends, values, and trades sports cards across diverse categories. Responsibilities will include supporting the sales, lending, and modeling teams, assisting with pricing strategies, engaging in card shows globally, and providing support to our customer base across sports card-related categories.Your Impact:Act as the internal authority on card valuation, offering a nuanced approach to pricing strategies for basketball, baseball, football, and Pokémon cards.Provide insights on detailed card inquiries regarding values, nomenclature, history, and trends across various card categories including modern sports, vintage sports, and trading card games (TCG).Exhibit flexibility in working hours to align with US time zones, demonstrating adaptability and commitment to global collaboration.Diligently input and maintain card data in Alt's database, capturing intricate details, historical context, and market subtleties.Collaborate cross-functionally with Marketing, Customer Experience, and Operations teams to ensure data integrity and strategic alignment.Develop and enhance pricing methodologies through a combination of market research, trend analysis, and deep category expertise.Stay ahead of market trends by continuously monitoring the sports card ecosystem, emerging collectibles, and transaction behaviors.Innovate from within by advancing card strategies that align with Alt’s vision.What You Bring:A thorough understanding of basketball card valuations.A strong working knowledge across multiple card categories including modern sports, vintage sports, and TCG.

About the RoleAs the Team Lead for our software development team, you will be instrumental in shaping the architecture, development, and delivery of top-tier software solutions. You will guide a talented group of developers, fostering collaboration, driving technical innovation, and ensuring robust delivery outcomes. Your role will blend hands-on coding with team leadership, empowering the team to excel in a dynamic environment.Our Tech StackLanguage: Java 17Frameworks: Spring Boot (Tomcat, Netty), Spring Data, Spring CloudArchitecture: Microservices, REST API, Message QueuesDatabase: MySQL, MyBatis, MongoDBCaching: Redis (AWS ElastiCache), ElasticSearchMessage Queue: RocketMQCloud: Kubernetes, AWSMonitoring: Grafana, Prometheus, Loki, Tempo, AWS CloudWatch, OpenTracingCI/CD: Jenkins, ArgoCDKey ResponsibilitiesLead and mentor a skilled development team across Europe, cultivating a culture of high-performance collaboration.Provide technical guidance and uphold best practices in software development, code quality, and system architecture.Engage in high-level architectural and design discussions for complex software systems.Oversee the entire development lifecycle from requirements gathering to deployment, guaranteeing timely delivery of high-quality solutions.Conduct regular code reviews, offering constructive feedback to enhance team skills and productivity.Manage team performance and support career development initiatives.Promote continuous improvement within development processes, tools, and techniques.Qualifications8+ years of software development experience, particularly in backend technologies (e.g., Java, Node.js, Python, Go, etc.).2+ years in a leadership capacity, with experience in mentoring, performance evaluations, and task allocation.Strong background in software architecture and designing scalable, reliable systems.Proven hands-on experience in backend development, with an emphasis on APIs and microservices.Exceptional communication skills in English, with the ability to manage and collaborate effectively within a diverse remote team.A passion for technology and innovation, coupled with a desire to tackle complex technical challenges.

Senior Java Backend Developer (DB2 / Oracle) | Remote LATAM | USD About the OpportunityWe are seeking a highly skilled Senior Java Developer with a strong focus on database technologies (DB2 and Oracle) for a demanding international project.This position is 100% in Spanish, contract-based, and fully remote from LATAM. Role ObjectiveTo develop and optimize backend solutions in Java, emphasizing enterprise database performance, integrity, and scalability. Main ResponsibilitiesDevelop backend applications in Java integrated with DB2 and OracleDesign and optimize complex SQL queriesImplement database logic (procedures, functions, triggers)Analyze and enhance query performanceParticipate in data-oriented architecture designEnsure data integrity and efficiencyCollaborate with multidisciplinary technical teams

Senior Java Backend Developer (DB2 / Oracle) | Remote LATAM | USD About the OpportunityWe are on the lookout for a Senior Java Backend Developer with a strong focus on databases (DB2 and Oracle) for a high-demand international project.This role is 100% in Spanish, contractor modality, and fully remote from LATAM. Role ObjectiveTo develop and optimize backend solutions in Java, emphasizing enterprise database performance, integrity, and scalability. Main ResponsibilitiesDevelop backend applications in Java integrated with DB2 and OracleDesign and optimize complex SQL queriesImplement database logic (procedures, functions, triggers)Analyze and enhance query performanceParticipate in data-oriented architecture designEnsure data integrity and efficiencyCollaborate with multidisciplinary technical teams

Senior Java Backend Developer (DB2 / Oracle) | Remote LATAM | USD About the OpportunityWe are seeking a Senior Java Backend Developer with a strong focus on database systems (DB2 and Oracle) for a high-demand international project.This position is 100% in Spanish, contractor-based, and fully remote from LATAM. Role ObjectiveTo develop and optimize backend solutions in Java, emphasizing enterprise databases while ensuring performance, data integrity, and scalability. Main ResponsibilitiesDevelop backend applications in Java integrated with DB2 and Oracle.Design and optimize complex SQL queries.Implement database logic (procedures, functions, triggers).Analyze and enhance query performance.Participate in data-oriented architecture design.Ensure data integrity and efficiency.Collaborate with multidisciplinary technical teams.

Twindo is pioneering the transformation of the remodeling, architecture, and interior design sectors through innovative AI and computer vision technologies. Our LiDAR-enabled iPhone and iPad scans generate accurate 3D representations of homes in mere minutes, delivering interactive models with precise measurements. Our proprietary technology converts these scans into detailed, editable as-built files in industry-standard formats. Our groundbreaking technology was showcased during Apple's keynote event when the LiDAR sensor was launched, and we are currently modeling millions of square feet every month.As a globally distributed, virtual-first organization, our team spans across various regions, with significant representation in the US and Europe.We are in search of a Senior Backend Engineer to contribute to the development and maintenance of our internal platform and tools, promoting business scalability and engineering efficiency. Reporting to the Platform Team Lead, this position involves a dynamic blend of foundational backend development and DevOps responsibilities, making it perfect for individuals who thrive on diverse projects. Collaboration with our iOS, Computer Vision, Visualization & Tooling, Web, Infrastructure, and Data engineering teams, as well as other departments, will be crucial.

Remote builds a platform that helps organizations manage global employment, making it easier for businesses to recruit, pay, and oversee international teams. The company’s fully remote structure brings together team members from six continents, each contributing unique perspectives to the ongoing development of Remote’s HR platform. Automation and AI are woven into daily work, supporting efficient and compliant operations. Role overview The Senior Backend Engineer joins a cross-functional group that includes Frontend, Backend, SRE, and QA specialists. Teams are organized by product vertical, and the specific assignment will be determined during the interview process based on both business needs and personal interests. The main focus of this role is building tools, APIs, and integrations for one of Remote’s core products. Key technologies Elixir and Phoenix for backend development Postgres as the primary database React and Next.js on the frontend GitLab for version control and CI/CD AWS for hosting Continuous integration enables frequent deployments throughout the day. For more detail on engineering practices, see the Engineering Rulebook. What this job can offer Challenging projects that support global collaboration between businesses and individuals Opportunities to make a direct impact as the company grows A supportive and flexible environment that values both personal and professional growth Location This is a fully remote position open to candidates anywhere in the world.

Join Raya as a Senior Backend Engineer, where your passion for backend engineering will be recognized and valued! We are looking for an experienced professional excited to work within a Node.js environment. The ideal candidate will possess over 6 years of progressive experience, showcasing both results and leadership capabilities in their previous roles. This is a pivotal moment for our backend team as we navigate through a phase of significant growth.At Raya, we believe in fostering a culture of learning and collaboration, empowering our team members to lead solutions to challenging problems and evolve into their best selves. You will play a crucial role in supporting our backend initiatives in messaging, connectivity, and location-based mapping projects. A successful candidate will demonstrate diligence in designing scalable software architecture and embrace Raya’s vision of enhancing lives through meaningful, in-person connections.We offer a robust benefits package that includes comprehensive medical and dental coverage, a daily food delivery allowance of $50, equity-based compensation, a vibrant company culture, ample learning opportunities, unlimited vacation, 12 weeks of paid parental leave, and an annual $1,000 travel stipend for personal growth and exploration, reflecting our core values of human connection, empathy, and curiosity.

At Assured, we're transforming the insurance landscape by modernizing claims processing—a crucial yet often neglected aspect of the industry. Currently fraught with inefficiencies such as phone calls and faxes, this sector costs billions annually. We believe there's a better way.Our mission is to equip large insurers with cutting-edge software solutions that thrive in today's technology-driven environment. From self-service claim-filing systems to sophisticated backend fraud detection, we are the driving force behind claims processing for some of the world's largest insurance providers.The challenges we tackle are varied and intricate, ranging from crafting digital experiences that offer comfort and clarity to claimants in distress, to orchestrating large-scale, machine learning-driven decision-making for billions in claims payments. Life at Assured is dynamic, collaborative, and fulfilling.We are seeking a seasoned Senior Backend Engineer to play a pivotal role in shaping the future of our rapidly expanding B2B SaaS platform. As an essential contributor to our engineering team, you will take ownership of critical systems from architecture and infrastructure to core business logic, ensuring our scalability is both reliable and secure.You will collaborate closely with product, infrastructure, and data teams to introduce new capabilities, enhance performance, and evolve the platform that supports our clients' most vital workflows. This high-impact position offers remarkable ownership, technical challenges, and opportunities for mentorship and leadership.

About Us: At RelayProtocol, we are a pioneering Series A startup in the crypto space, dedicated to crafting innovative developer tools that facilitate token trading. Our vision is to empower developers in creating next-generation crypto applications by simplifying token integration and enhancing crypto commerce. We proudly support a myriad of crypto enterprises, including industry leaders like Magic Eden and Coinbase, across diverse sectors such as gaming, social interaction, and payments. Our team comprises deeply technical experts proficient in blockchain indexing, protocol design, and cross-chain interoperability. We are on the lookout for a driven Senior Backend Engineer to join our close-knit yet expanding team.Role Overview: We invite a highly skilled and seasoned Senior Backend Engineer with a robust foundation in crypto and/or financial technologies to elevate our team. In this pivotal role, you will be responsible for the design, development, and maintenance of the backend infrastructure for our cross-chain relayer product, ensuring its reliability and performance.Key Responsibilities:Backend Development: Architect, implement, and sustain highly scalable and resilient backend systems tailored for our cross-chain relayer. Optimize performance and responsiveness for large-scale data processing.Crypto Integrations: Engineer and uphold seamless integrations with various blockchain networks and crypto protocols, enhancing our platform's interoperability.

Why Clipboard Exists:At Clipboard, our mission is to empower individuals to ascend the socioeconomic ladder by transforming their extra time and ambition into meaningful career growth and financial opportunities. Our innovative app-based marketplace connects professionals with workplaces, enabling on-demand shift bookings that benefit both parties.About Clipboard:Clipboard is a rapidly expanding Series C company recognized as a leader in the Long Term Care sector, with plans to diversify into additional areas such as Dental Offices and Schools. As a YC Top Company, our global team of over 700 professionals operates remotely, having achieved profitability since 2022. We facilitate millions of shifts annually across the U.S., serving tens of thousands of professionals. Join us in our mission to further expand our impact. Learn more about our vision on our website here.Your Mission: Innovate, Execute, and Deliver ImpactAs a Backend Software Engineer at Clipboard, you will go beyond writing code—you will design solutions that redefine the connection between healthcare professionals and facilities. Collaborating with product managers, designers, and fellow engineers, you will develop impactful features that address real-world challenges. This is a dynamic and ongoing recruitment effort, as we consistently seek talented software engineers to join our growing team.What You’ll Do: Own the Code, Shape the FutureDeliver High-Quality, Scalable CodeCraft performant backend services utilizing Node/NestJS alongside responsive frontend features using React and TypeScript.Utilize MongoDB, Postgres, and Redis to maintain data integrity and optimize performance at scale.Develop Reusable Components and UtilitiesContribute clean, modular code for our web and mobile applications (Ionic/React, Dart/Flutter).Collaborate with the Developer Experience (DevX) team to enhance tools and libraries that increase productivity and streamline workflows.

Whippy is at the forefront of revolutionizing business communication through AI technology. Our innovative AI Agents are transforming the way companies interact with their customers, providing solutions across customer support, marketing, and sales. By leveraging Whippy’s Voice AI and Chat AI, businesses can automate manual workflows, effectively manage inquiries, nurture leads, screen applicants, and streamline high-value engagements at scale. Our all-in-one platform replaces outdated tools with a powerful solution that enhances productivity and efficiency.About the RoleJoin Whippy as a Backend Engineer and play a crucial role in our product development.You will:Design and implement highly scalable APIs for quick deployment of new products and services.Draft Engineering Requirement Documents to guide projects from concept to execution, ensuring thorough evaluation.Develop test suites to uphold product performance and reliability, integrating analytics to track the success of launched features.Our backend engineers have successfully built:A robust Public API and webhook interface handling millions of messages.An advanced query language built on top of Postgres and OpenSearch.A production-ready URL shortening service with custom domain capabilities.About YouYou possess a strong understanding of web API architecture and a commitment to producing high-quality, well-documented APIs.You are eager to engage in the entire project lifecycle, from initial research and planning through to implementation and performance monitoring.Your excellent written and verbal communication skills enable you to convey ideas, designs, and potential solutions effectively, primarily in an asynchronous environment.What We OfferWe offer a competitive compensation package ranging from $60K to $80K annually, commensurate with experience.You will have the opportunity to take significant responsibility and ownership of a groundbreaking product.Collaborate closely with experienced entrepreneurs who have successfully built companies valued over $100M.Important InformationAs a startup, our team dynamics are unique compared to larger organizations. We are a globally distributed team, and this structure fosters a distinct collaborative culture.

Join Kaizen Gaming as a Senior Backend Engineer and be part of a dynamic Agile team dedicated to crafting innovative solutions for millions of users worldwide. Collaborate with cross-functional teams to drive impactful projects, from user-facing applications to robust backend services, ensuring high performance and reliability. Your expertise will guide the development of scalable systems, turning complex requirements into elegant technological solutions.