N-iX is seeking a Senior Backend Java Engineer to join a team supporting a US-based digital asset trading platform. This platform provides secure, low-latency access to cryptocurrency markets and bridges traditional finance with Web3 technologies. Role overview This position focuses on designing, developing, and maintaining high-performance backend services that power the core trading platform. The work centers on Java and distributed systems, with a strong emphasis on reliability, scalability, and the integration of emerging blockchain technologies. Collaboration with cross-functional teams is a key part of the role. What you will do Design, build, and maintain backend services and APIs in Java to support high-throughput trading operations. Lead architectural discussions to improve system scalability, resiliency, and performance. Embed security and compliance requirements into service design and implementation. Work closely with product, security, DevOps, and compliance teams on shared projects. Mentor junior engineers and uphold strong engineering practices. Investigate and prototype blockchain integration, such as node syncing and client tooling. Encourage the adoption of modern, sustainable infrastructure aligned with industry standards. Requirements Extensive experience with Java and distributed backend systems. Ability to lead technical discussions and mentor others. Familiarity with security, compliance, and blockchain integration concepts. Strong collaboration skills for working across multiple teams.

Join Us in the Fight Against Cyber Threats!At Illumio, we are pioneers in ransomware and breach containment, transforming the way organizations tackle cyberattacks while fostering operational resilience. Our advanced Illumio AI Security Graph enables our breach containment platform to swiftly identify and neutralize threats across hybrid multi-cloud environments, preventing potential disasters before they escalate.As a recognized Leader in the Forrester Wave™ for Microsegmentation, we empower Zero Trust principles, enhancing the cyber resilience of the infrastructure, systems, and organizations that keep the world functioning.Our VisionOur Engineering team thrives on innovative leadership, autonomy, and ownership, cultivating a vibrant synergy that propels us forward in the dynamic cybersecurity landscape.By joining our team, you will contribute to the leader in Zero Trust Segmentation. You will work with an advanced technology stack that encompasses diverse operating systems, distributed applications, and sophisticated UI/visualization tools.Together, we are shaping the future of cybersecurity, continuously developing world-class products driven by a diverse team committed to innovation amidst unprecedented cybersecurity threats.Your Contributions:Develop and maintain containerized microservices and their components for a distributed multi-tenant system that processes data and real-time telemetry from various public clouds, providing customers with insights and security recommendations to mitigate cloud risks.Mentor junior engineers, new graduates, and interns, guiding them in their professional growth and integration into the team.Primarily write code in Java utilizing the Spring Boot framework, while engaging with data pipelines through Kafka, SQL, or similar interfaces.Leverage Kubernetes for service infrastructure; we welcome individuals from diverse technological backgrounds eager to learn.Take ownership of critical features and subsystems, managing the complete software development lifecycle from requirement clarification to successful deployment and customer utilization.Oversee operational aspects of the system, actively addressing challenges to ensure optimal performance.

Senior Java Backend Developer About the OpportunityWe are seeking a Senior Java Backend Developer to join an impactful international project. This role is 100% in Spanish, offered as a contractor position, and is fully remote from LATAM. Role ObjectiveYour mission will be to design, develop, and implement robust and scalable backend solutions in Java, ensuring quality and performance while adhering to best practices in enterprise environments. Main ResponsibilitiesDevelop and maintain backend applications using Java.Design and implement RESTful APIs.Engage in architectural design and technical decision-making.Apply best practices such as clean code and SOLID principles.Conduct unit and integration testing.Participate in code reviews and provide mentorship.Collaborate with teams following agile methodologies.Troubleshoot incidents in production environments.

Join our dynamic team as a Senior Backend Engineer at antithesis, where you will play a crucial role in developing innovative backend solutions that drive our cutting-edge projects. As a Senior Backend Engineer, you will work closely with cross-functional teams to design, implement, and optimize our backend architecture, ensuring high performance and scalability.

About the RoleAs a Senior Backend Engineer at sportygroup, you will play a pivotal role in crafting robust microservices within a distributed deployment framework. Emphasizing containerization with Docker and Kubernetes, your work will go beyond basic CRUD applications, immersing you in the core logic of complex systems that handle millions of daily requests. Our platform, developed from the ground up three years ago, leverages the latest technologies, freeing you from the burdens of legacy code. If you are eager to work with Spring Boot and possess solid experience in an object-oriented programming language, we welcome your ambition to learn.Our Technology Stack (Familiarity with all is not required)Languages: Java 17Frameworks: Spring Boot (Tomcat, Netty), Spring Data, Spring CloudArchitecture: Microservices, REST APIs, Message QueuesDatabases: MySQL, MyBatis, ShardingSphere, MongoDBCaching: Redis (AWS ElastiCache), ElasticSearchMessage Queues: RocketMQCloud: Docker, Kubernetes, AWSMonitoring: Grafana, Prometheus, Loki, Tempo, AWS CloudWatchYour ResponsibilitiesDevelop scalable backends for mobile applications serving millions of users.Collaborate with Product Owners and development teams to define necessary features and user stories for new and revised applications or complex projects.Engage in peer and manager code reviews to ensure adherence to original visions and appropriate architecture patterns.Respond to production support inquiries for prompt diagnosis and resolution to maintain seamless user experiences.Participate actively in team ceremonies, including planning, grooming, product demonstrations, and retrospectives.Mentor junior team members and share knowledge.Potential on-call responsibilities based on team and tenure.Your BackgroundA minimum of 6 years of experience in a relevant role.Preferred experience with Spring Boot, Spring Cloud, Spring Data, and iBATIS.Proven track record in developing highly scalable web backends.Experience in designing high-transaction systems.Strong proficiency in Object-Oriented Design (OOD) and analysis.Advanced understanding of application analysis and design engineering functions.Expertise in applying non-functional software qualities such as resiliency and maintainability.

Senior Java Developer About the OpportunityWe are actively seeking a Senior Java Developer to join an impactful international project.This position is 100% Spanish, offered as a contractor role, and is remote from LATAM. Position ObjectiveTo design, develop, and implement robust and scalable backend solutions in Java while 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 (clean code, SOLID)Conduct unit and integration testingEngage in code reviews and mentorshipCollaborate with teams using agile methodologiesTroubleshoot issues in production environments

About the RoleWe are seeking an experienced Senior Backend Software Engineer to join our dynamic team at Starbridge. This remote position is ideal for a versatile engineer with a strong background in Java and preferably Kotlin, eager to contribute to building our innovative product from the ground up.As a Senior Backend Engineer, you will collaborate with our talented team to develop integrations with enterprise systems, implement web scraping solutions, and enhance our systems that leverage LLMs to provide scalable sales insights. Your work will involve processing and extracting meaningful insights from millions of public documents.

Hello, I'm Rom Paras, Senior Manager of Engineering at Teamworks. We are committed to enhancing our Athlete Management System, a pivotal component of the Teamworks Performance category, by modernizing its architecture significantly. This position is tailored for a backend engineer who thrives on tackling complex legacy systems and is eager to pave the way for innovative solutions.You will play a crucial role in the backend modernization of AMS, collaborating with the team to make informed technical decisions that elevate performance, scalability, and maintainability over time.Your ResponsibilitiesTake full ownership of backend features from conception to delivery, contributing to the transformation of AMS’s architecture (e.g., upgrading from Java 11 to a modern LTS version and progressing towards containerized, multi-tenant, cloud-native systems).Design and refine API workflows and data models to enhance system performance, scalability, and PostgreSQL query efficiency.Lead initiatives to implement asynchronous processing patterns, remove deprecated code, and upgrade build and dependency management systems.Collaborate with Platform Engineering to improve CI/CD pipelines, infrastructure, and deployment workflows using tools like Terraform, Kubernetes, and Ansible.Influence architectural decisions and technical strategies within the AMS domain, balancing immediate project needs with long-term scalability goals.Mentor and provide guidance to junior engineers, enhancing the technical expertise and engineering standards of the team.Engage in on-call rotations, proactively enhancing system reliability, observability, and incident response practices.Candidate ProfileEssential QualificationsA minimum of 6 years of backend engineering experience with a proven track record of delivering complex systems.Expertise in Java, particularly in modernizing legacy systems.Comprehensive understanding of PostgreSQL, RESTful API design, and performance optimization at scale.Hands-on experience with AWS and infrastructure-as-code tools such as Terraform, Kubernetes, and Ansible.Demonstrated capability to independently drive projects from design to production.Excellent communication skills with the ability to collaborate effectively across engineering, product, and platform teams.

Are you an innovative software engineer with a passion for backend development? Join our dynamic team at Walmart Inc. as a Senior Software Engineer specializing in Backend Java. In this role, you will leverage your expertise to design, develop, and maintain scalable applications that drive our corporate technology initiatives.Your responsibilities will include collaborating with cross-functional teams to enhance system performance, implementing best practices in software development, and mentoring junior engineers. If you are looking to make a significant impact in a fast-paced environment, this is the opportunity for you!

Role overview qodeworld is seeking a Senior Java Backend Developer for a full-time role based in Colorado or Pittsburgh. This position centers on leading backend development efforts, using Java, Spring Boot, microservices, and cloud platforms. The ideal candidate has a history of guiding teams and delivering scalable backend solutions. What you will do Design, build, and maintain backend services with Java, Spring Boot, and a microservices approach. Work alongside cross-functional teams to define and implement technical solutions. Develop and optimize database architecture, integrating both SQL and NoSQL databases. Collaborate with DevOps teams to enhance CI/CD pipelines and manage cloud deployments using AWS, Azure, or GCP. Troubleshoot performance issues and implement changes to improve scalability and efficiency. Requirements Minimum 10 years of hands-on experience in Java backend development. Advanced knowledge of Spring Boot, microservices, multithreading, REST APIs, and cloud technologies. Proficient with database management systems such as MySQL, PostgreSQL, MongoDB, or similar tools. Experience with containerization (Docker, Kubernetes) and CI/CD processes. Strong analytical and problem-solving skills, with proven leadership experience. Effective communication and stakeholder management abilities. Preferred skills Familiarity with Agile methodologies and DevOps practices. Experience with front-end technologies is beneficial. This role offers the opportunity to lead backend development projects at qodeworld, working with modern technologies and collaborating across teams.

Join the dynamic team at TechBiz Global, a leading recruitment service provider, as we partner with top-tier clients to fulfill their technical hiring needs. We are currently seeking an experienced Java Backend Engineer to take on a pivotal role in developing a robust Applicant Tracking System (ATS) that integrates seamlessly with REST and FIX APIs. This position offers the opportunity to collaborate closely with product managers, architects, and front-end engineers to create scalable backend services for high-performance applications.Key Responsibilities:* Design and implement backend services and APIs in Java (Spring Boot / Jakarta EE) for ATS functionality.* Develop and maintain RESTful APIs for both external and internal system integrations.* Implement and optimize FIX protocol-based APIs for financial and trading system integrations.* Ensure a low-latency, high-availability, and secure backend architecture.* Write clean, maintainable, and well-documented code adhering to industry best practices.* Collaborate with DevOps teams to deploy and monitor services in production environments (AWS, GCP, Azure, or on-premise).* Optimize database performance (SQL/NoSQL) and design schemas for ATS workflows.* Conduct code reviews, unit testing, and integration testing to uphold code quality.* Troubleshoot and resolve performance, scalability, and reliability issues.* Stay updated on emerging technologies, protocols, and best practices in API development and backend engineering.

At Real, we are redefining the residential real estate landscape by leveraging technology and human expertise. As a publicly traded, rapidly expanding global real estate brokerage, operating since 2014, we have established a significant presence across the U.S., Canada, India, and Washington D.C. Our innovative platform not only empowers agents but also simplifies the buying and selling process, thereby unlocking enhanced financial opportunities for all stakeholders.We believe in the synergy of technology and humanity to create unique solutions that stand out in the industry. Discover more about us at www.onereal.com.Work Schedule: This position will require you to work Eastern Standard Time (EST) hours, irrespective of your geographical location.About the Role:As a Senior Backend Engineer - Technical Lead, you will play a pivotal role in Real’s Research and Development team, reporting directly to the Vice President of Engineering. Your primary responsibility will be to guide the technical direction of our backend systems, enhancing our Java Spring Microservices by implementing new features, resolving bugs, and driving continuous improvements. If you are a self-driven tech expert passionate about delivering results, we invite you to join our dynamic team.What You’ll Do:Engage in collaborative engineering efforts through pair programming, code reviews, and knowledge-sharing sessions during our weekly Friday Dev Chats.Mentor junior engineers in software methodologies, design principles, and industry best practices.Partner with product teams and feature owners to gather requirements and oversee their implementation and deployment.What You’ll Bring:Proven experience with Java 17+, Spring Boot, JPA (Hibernate), and SQL relational databases.Proficient in writing unit and integration tests while maintaining robust code coverage.Hands-on experience designing and implementing applications using microservices architecture.Deep understanding of relational databases, including indices, connection pools, and the implications of schema design on performance.Familiarity with NoSQL databases, including their strengths and weaknesses, and knowledge of when to utilize them appropriately.

Join Us in Shaping the Future of Trust in AIAt Oscilar, we are at the forefront of creating the most sophisticated AI Risk Decisioning™ Platform. Our clients, including banks, fintech companies, and digital-native organizations, rely on our innovative solutions to navigate fraud, credit, and compliance risks using the power of artificial intelligence. If you are eager to tackle intricate challenges and enhance internet safety for all, this is your opportunity.Why Oscilar?Mission-Driven Environment: Collaborate with industry leaders from Meta, Uber, Citi, and Confluent, all working towards a common goal of enhancing digital safety.Empowerment and Ownership: We advocate for extreme ownership. You will be given the autonomy to make impactful decisions and drive our mission forward swiftly.Innovative Technology: Your contributions will redefine how contemporary finance detects fraud and manages risks.Role OverviewAs a Senior Backend Engineer at Oscilar, you will play a critical role in designing, developing, and maintaining the foundational infrastructure of our SaaS platform. You will work closely with cross-functional teams to deliver high-performing, scalable, and reliable services tailored to our global enterprise clients.Key ResponsibilitiesArchitect and develop scalable, high-performance, and low-latency backend services utilizing Java and AWS technologies.Collaborate with product management, frontend developers, and QA teams to establish technical specifications and ensure seamless integration with other platform components.Enhance and optimize existing services for maximum performance, reliability, and maintainability.Analyze and resolve system bottlenecks to ensure optimal resource utilization and stability.Adopt best practices for code quality, testing, and deployment, including CI/CD pipelines.Continuously monitor backend service health and performance, taking proactive measures to address potential issues.Mentor and provide technical guidance to junior engineers.QualificationsSolid experience in backend development with a focus on Java and AWS.Proficiency in designing scalable and robust backend architectures.Strong understanding of microservices architecture and cloud-native solutions.Exceptional problem-solving skills and a passion for crafting high-quality code.Excellent communication skills and ability to work collaboratively in a team environment.

About Binance.US:Binance.US is your gateway to buy, trade, and earn digital assets in America. As a licensed and regulated cryptocurrency platform, we provide secure access to over 190 of the world's most sought-after cryptocurrencies, all while maintaining some of the lowest fees in the industry. Our remote-first team of pioneers is dedicated to bridging traditional finance with Web3, striving to make financial freedom accessible to everyone. To learn more, visit www.binance.us. All roles supporting Binance.US are employed via BAM Management US Holdings Inc. or BAM Management Canada Holdings Inc.About This Role:As a Senior Backend Software Engineer within our Engineering team, reporting to the Engineering Manager, you will play a crucial role in designing, developing, and maintaining backend services that power Binance.US products. Utilizing your expertise in Java and distributed systems, you will collaborate across various departments including product, security, compliance, and infrastructure to deliver scalable and secure solutions. This position also offers the chance to work on blockchain integrations, perfect for engineers eager to deepen their knowledge in cryptocurrency and decentralized technologies.Core Responsibilities:Design, build, and maintain high-throughput backend services and APIs using Java.Lead architecture discussions to improve system scalability, resilience, and performance.Integrate security and compliance as fundamental elements of service design and delivery.Work closely with product, security, DevOps, and compliance teams on cross-functional projects.Guide and mentor junior engineers, exemplifying high engineering standards and best practices.Investigate and prototype blockchain integration solutions (e.g., node syncing, client tooling).Promote a modern and maintainable infrastructure informed by industry best practices.

At Squarespace, we are transforming the way individuals realize their visions online. Our Research and Development Engineering teams are central to this mission, crafting seamless and powerful experiences that our customers depend on daily. As a Senior Backend Engineer, you will join a collaborative and high-impact team dedicated to developing scalable and reliable systems behind some of the web's most intuitive tools. Whether you bring three years or two decades of experience, if you are driven by a passion for designing elegant solutions, we invite you to connect with us. This is a hybrid position, requiring three days per week in our NYC office, reporting directly to the Engineering Team Manager. We are actively hiring across multiple significant R&D teams. Based on your expertise and interests, you may have the opportunity to join one of the following: Identity and Access Management (IAM) - responsible for developing and maintaining the fundamental systems that ensure secure access across our platform for both customers and internal teams, focusing on core functionalities such as authentication, authorization, and session management. Communications Platform - provides tools and services that facilitate effortless communication between our product teams and customers at scale. Our goal is to create user-friendly and impactful platforms. This role is high-visibility and high-impact as our work is utilized by a majority of product teams. Your Responsibilities Include: Developing scalable backend services using Java and related technologies. Writing clean, efficient code that supports high-traffic, production-ready systems. Contributing to design decisions and taking part in architectural discussions. Collaborating with engineers, designers, and product managers. Creating features from initial concept through to implementation and launch.

Role Overview Illumio is looking for a Staff Engineer focused on Backend Java development at its Sunnyvale, California headquarters. This role centers on designing and building scalable backend systems that support Illumio’s security platform. What You Will Do Design and implement backend solutions using Java Work closely with teams across engineering, product, and operations Write efficient, reliable code that supports large-scale security features Apply current technologies and best practices to improve system performance Location This position is based at Illumio’s headquarters in Sunnyvale, California.

Join Our TeamAt Keeper Security, we are on a mission to revolutionize cybersecurity for organizations globally. We are currently seeking a Senior Software Engineer to enhance our KeeperApp backend team, dedicated to developing and maintaining robust server-side systems integral to our core products. This role is fully remote, with the option for a hybrid work schedule for candidates located in the El Dorado Hills, CA or Chicago, IL metro areas.As a leader in cybersecurity, Keeper serves millions of users and thousands of organizations in over 150 countries and 23 languages. By joining our rapidly growing team, you will have the opportunity to architect and elevate Keeper's backend projects using the latest technologies in the AWS cloud.Your RoleIn this role, you will be responsible for designing, developing, and maintaining backend services and APIs that power KeeperApp's core functionalities. You will have the autonomy to manage backend components, drive implementation decisions, and ensure long-term system sustainability. While our broader platform operates within AWS, this position focuses primarily on application-level backend development.Key ResponsibilitiesCraft and deploy backend services and APIs utilizing Java.Produce clean, maintainable, and efficient server-side code.Develop and refine business logic that underpins KeeperApp's essential features.Collaborate with MySQL to design schemas, construct queries, and enhance performance.Work alongside senior engineers and product managers to innovate feature design and implementation.Engage in code reviews and champion backend engineering best practices.Diagnose and rectify backend performance issues.

Since our inception, we have revolutionized the approach to small-dollar loans, having provided over $1 billion in funding to more than 1.5 million customers, and issued over 4 million loans that have saved our clients more than $650 million.At Possible, we are developing an innovative consumer finance company that prioritizes helping our customers avoid debt rather than profiting from it. As a Public Benefit Corporation, our mission is to facilitate economic mobility in communities through affordable credit products designed to foster financial health for generations. Join the team that is turning our vision into reality.About the RoleWe are in search of a skilled Senior Software Engineer to bolster our engineering team. In this role, you will be responsible for designing, developing, and maintaining high-performance, reliable, and scalable services utilizing Java, the Spring Framework, gRPC, and GraphQL. As a senior member of the team, you will offer technical leadership, mentor junior engineers, and inspire innovation in your domain.

This role is fully remote.At Pulse Labs, we are in search of a passionate and innovative Backend Engineer who thrives in a dynamic and fast-paced environment. If you are motivated by tackling intricate challenges and have a penchant for creating robust software solutions, this position is perfect for you. As a vital member of our core engineering team, you will play a pivotal role in directing the company’s strategic vision by developing, implementing, and upholding the essential software infrastructure. Our philosophy revolves around iterative development with a strong emphasis on user experience while leveraging the most suitable technologies available.Key Responsibilities:Design and maintain software that meets the high standards of a real-time, highly concurrent distributed system.Collaborate with the development team to architect and build a performance-driven, reliable, scalable, and extensible back-end system that supports the entire Pulse Labs organization.