Senior Java Developer

Join our dynamic team at 360IT Professionals as a Full Stack Java/Web UI Developer. We are seeking a talented individual who is passionate about building innovative applications and has expertise in both front-end and back-end technologies. You will play a key role in designing and developing robust web applications that deliver exceptional user experiences.

Join our dynamic team as a Web/UI/Frontend Developer at Mindlance, where you will play a vital role in enhancing user experience through innovative design and cutting-edge technology. You will be responsible for developing visually appealing and user-friendly interfaces, collaborating with cross-functional teams to deliver high-quality web applications that meet the needs of our clients.

Join our dynamic team at Sonsoft Inc. as a Software Developer specializing in Java/J2EE and Web Services. We are looking for a motivated individual who thrives in a fast-paced environment and is eager to tackle challenging projects. You will play a crucial role in designing, developing, and maintaining applications that enhance our services and meet client needs.

Job DescriptionSummary:We are on the lookout for a talented Senior Full Stack Developer to spearhead the creation of an innovative smart home integration platform. This platform aims to seamlessly connect lighting control systems with motorized shading solutions, empowering users with intuitive real-time applications on embedded gateway devices utilizing cutting-edge full stack technologies.General Information:This position is part of a premium residential automation team dedicated to crafting exceptional user experiences. The project focuses on integrating motorized shading systems with lighting control keypads, allowing for cohesive operation through proprietary IoT protocols. Utilizing embedded Linux-based gateways, the system features a TypeScript/Node.js backend and a streamlined web UI developed with Preact. Key objectives include real-time monitoring of device states, secure pairing, robust API development, and user-friendly configuration interfaces. The project is actively being developed with access to physical test hardware and offers a flexible, collaborative work environment.Tasks and Deliverables:Develop and maintain backend services for device discovery, communication, and control.Create a web-based UI for device configuration, programming, and live updates.Implement WebSocket-based real-time communication across systems.Design and maintain RESTful APIs for device management and scene execution.Manage certificate-based authentication and secure device pairing workflows.Develop error logging, monitoring, and recovery tools for production deployments.Write unit and integration tests to ensure code stability and maintainability.Generate and maintain internal technical documentation and API references.Engagement Highlights:Play a vital role in shaping the future of smart home technologies.Access to advanced testing environments and real-world IoT hardware.Preference for candidates who can visit the office 1-2 days per week.

Join Watershed as a Full-Stack Software EngineerAt Watershed, we are at the forefront of sustainability innovation, empowering companies like Airbnb, Carlyle Group, FedEx, Visa, and Dr. Martens to effectively manage climate and ESG data. Our enterprise sustainability platform enables users to generate audit-ready metrics for both voluntary and regulatory reporting, including the CSRD, while driving genuine decarbonization.As part of our mission-driven startup, we are seeking passionate individuals who thrive on product development and are eager to contribute to a collaborative team culture. Our offices span across major cities such as San Francisco, New York, Denver, and London, with remote team members in the US and Europe. We invite you to explore joining our dynamic team!About The RoleWe are in search of a motivated Full-Stack Software Engineer who is enthusiastic about all aspects of product development, from hands-on engineering and customer engagement to mastering the climate domain and setting strategic directions for our company. Joining as an early team member, you will play a crucial role in shaping the future of Watershed.Your experience should reflect a history of developing products that resonate with users. Our technology stack includes a web frontend utilized by customers, underpinned by a backend consisting of climate data, climate models, and integrations with various financial systems. We prioritize a customer-first approach, so you will frequently work with technologies such as React, TypeScript, CSS, and Node.js. Prior expertise in our specific tech stack is not required; what matters most is your ability to rapidly adapt to new technologies.Key traits we value include a customer-centric mindset, a focus on outcomes, and inclusivity. We are looking for individuals who take ownership and can help enhance our company culture.Potential ProjectsDevelop interactive data visualizations to enable climate leads to better grasp their company's emissions.Create APIs to streamline carbon data access for our customers and engineering teams.Design tools for financial institutions to measure and report emissions across their portfolio companies.Build tools that facilitate the efficient ingestion and interpretation of business data.Your ContributionsDeploy high-quality code to production environments.

Join our dynamic team at Artech Information Systems LLC as a Senior Java Developer! We are looking for a talented individual with a strong background in Java development and a passion for building scalable applications. You will collaborate with cross-functional teams to design and implement high-quality software solutions that meet the needs of our clients.

Role Overview bet365 is looking for a Senior Full Stack Engineer in Denver to help build and improve our sports platform. This role involves hands-on work across both front-end and back-end systems. Collaboration with other engineers is central, with a focus on delivering features that make the user experience smoother and more engaging.

About SonderMindAt SonderMind, we are dedicated to ensuring that everyone has access to a personalized, connected, and effective mental health solution for their well-being at any life stage. Our comprehensive care services range from therapy and medication management to meditation and mindfulness practices. Our clinicians utilize cutting-edge digital tools and research to enhance the quality of care and foster successful practices. By merging technology with human connection, SonderMind aims to achieve improved outcomes through our holistic approach. Discover more about us at sondermind.com or download our mobile app available on iOS and Android. Stay updated with our latest news and connect with our community on Instagram, LinkedIn, and Twitter.We encourage our team members to actively use modern AI technologies in their daily tasks and to adapt to emerging tools. Familiarity with relevant AI platforms such as Gemini, ChatGPT, Claude, GitHub Copilot, and other industry-standard productivity tools is essential for success at SonderMind.About the RoleAs a Staff Engineer, you will be responsible for the end-to-end development of features across our backend services, agentic frameworks, AI pipelines, and frontend applications. You will operate with minimal supervision, tackle complex challenges, devise innovative designs and optimizations, and help shape our microservices architecture while collaborating closely with product, design, and QA teams. You will work with high-performance, mission-critical tools and services. While experience in training or developing ML models/algorithms is not mandatory, it is a plus.What You’ll DoDesign, build, and maintain scalable Ruby/Rails, TypeScript/Node, and Python services and RESTful or gRPC APIs integrated with agentic GenAI systems.Optimize MongoDB and PostgreSQL queries and enhance overall service performance.Collaborate with cross-functional squads to outline requirements and deliver features effectively.Engage with AI Agents, MCP servers, and various AI-enabled tools and frameworks, embracing an environment of ambiguity and rapid evolution.

Join DigitalOcean as a Senior Full-Stack Engineer II, where you will leverage your expertise in AI/ML to develop innovative solutions that enhance our cloud platform. In this role, you will collaborate with cross-functional teams to design, implement, and optimize robust applications, ensuring seamless integration of AI technologies.

Join Ranger: Pioneering the Future of Software TestingAt Ranger, we are on a mission to transform the landscape of Quality Assurance (QA). Our goal is to empower the world's most innovative engineering, product, and design teams, allowing them to focus on what they do best—creating remarkable products.How We Are Innovating the Industry:Smart Test GenerationUtilizing cutting-edge LLM technology, we automatically produce dependable and efficient Playwright tests that elevate software quality.Self-Correcting TestsOur system identifies and rectifies flaky tests proactively, ensuring your test suites are both consistent and reliable.Enhanced Failure InsightsReceive automated failure reports that include probable causes and straightforward steps for reproducing issues.Ranger is trusted by some of the fastest-growing companies globally, including Clay, Suno, and Dust. We’ve also partnered with OpenAI, which you can read more about here.Become a Part of Our TeamTo further our mission, we are thrilled to announce $8.9 million in total funding over two rounds led by XYZ and General Catalyst, alongside support from some of our earliest customers, including co-founders from Clay, Suno, and Dust.Let’s redefine the way software teams test their products. Join us on this exciting journey as Ranger leads the transformation.

We are seeking a passionate and skilled Java Developer to join our dynamic team in Denver. As a Java Developer, you will have the opportunity to work on exciting projects, develop innovative solutions, and contribute to the success of our clients. If you are looking for a challenging role with ample opportunities for growth and advancement, we want to hear from you!

Location: US or CanadaType: Full-Time for US Applicants; Independent Contractor for Canadian ApplicantsAbout humanagencyAt humanagency, we are on a rapid growth trajectory, seeking exceptional talent across diverse disciplines to meet a growing pipeline of opportunities. Our mission is to engage individuals—ranging from creative producers to technical specialists and entrepreneurial leaders—who can drive our next chapter of innovation and success.We pride ourselves on being a company of doers. In our culture, leaders are hands-on, teams collaborate closely, and everyone contributes to the final product. We embrace feedback and foster an environment where the best ideas prevail, regardless of their source, since our clients depend on us to deliver outstanding results consistently.Our clients’ missions, products, and financial outcomes are paramount. We immerse ourselves in their objectives, acting as stewards and partners in tackling significant challenges. Every product, strategy, or asset we develop must be aesthetically pleasing as well as functional, practical, and designed for tangible real-world effects.Our greatest asset is our people. We aim to grow by hiring individuals who inspire and elevate us. Whether in strategy, engineering, design, data, or operations, we seek teammates who challenge the status quo and contribute positively to our collective success.We collaborate with organizations of all sizes to explore, design, and implement AI strategies that are secure, scalable, and centered on human experience. We believe that AI should enhance human potential rather than replace it, and we build our solutions on this principle. From advisory and tooling to implementation and education, we partner with clients to integrate AI in a manner that aligns with their mission and values, empowering teams to work smarter and unlock new possibilities through thoughtful innovation.At humanagency, we lead with purpose, passion, and a spirit of adventure. We engage in meaningful work with individuals we care about, ensuring that the journey is as rewarding as the destination.The OpportunityJoin us at humanagency as we shape the future by merging advanced AI solutions with intuitive software development. We specialize in creating scalable and secure SaaS applications that enable enterprise clients to effectively address complex challenges. As a Senior Full-Stack Engineer, you will take charge of development initiatives and collaborate on high-impact projects at the intersection of AI, machine learning, and secure software engineering.

Join our dynamic team at 360IT Professionals as a UI/Frontend Developer. We are seeking a talented individual who possesses extensive experience in developing Single Page Applications (SPAs). In this role, you will collaborate closely with designers and backend developers to create intuitive and visually appealing user interfaces that enhance user experiences.

Join our dynamic team at Sonsoft Inc. as a Java J2EE Developer, where your coding expertise will shape innovative software solutions. As a key member of our development team in Denver, you will be responsible for designing, developing, and maintaining scalable web applications using Java technologies.

Join our dynamic team at Artech Information Systems LLC as a Java Developer! In this mid-senior level position, you will be instrumental in developing robust and scalable Java applications that meet the needs of our diverse clients. You will collaborate with cross-functional teams to define, design, and ship new features, ensuring high performance and responsiveness. Your expertise in Java will be crucial in maintaining and improving existing applications while also contributing to the overall architecture of our systems.

A new era in space exploration is emerging, and True Anomaly is on the forefront of this revolution. We are seeking talented and ambitious individuals to develop cutting-edge technology that addresses the forthcoming challenges in engineering, manufacturing, and operational aspects of space security and sustainability.OUR MISSIONThe peaceful utilization of outer space is vital for the ongoing prosperity of our planet, encompassing fields from communications and finance to navigation and logistics. At True Anomaly, we create pioneering technology at the crossroads of spacecraft, software, and AI, enhancing the capabilities of the United States, its allies, and commercial partners while ensuring access to space and sustainability for all.OUR VALUESBe the offset. We cultivate asymmetric advantages through creativity and innovation.What would it take? We question assumptions to achieve ambitious outcomes.It’s the people. Our team is our strongest asset, and we thrive together.YOUR MISSIONSoftware serves as the central nervous system for True Anomaly's engineering and product initiatives. It connects military objectives, theoretical astrodynamics, and the control of spacecraft and ground systems, both human and autonomous, across time and space. We are looking for an outstanding Staff Full Stack Software Engineer to steer the technical trajectory and advancement of our spacecraft modeling, simulation, and distributed ground control platform across every layer of the stack.This high-impact, strategic leadership role will involve defining and driving the technical roadmap that encompasses both frontend and backend systems, leading cross-functional initiatives that connect engineering, product, and operations, and laying the architectural groundwork that will support the scalability of our platform for years to come. You will identify crucial technical investments, advocate for them throughout the organization, and oversee their implementation. Your role will not just involve building features; you will influence product direction, shape company objectives, and mentor engineers who will develop the next generation of our platform. When you identify systemic issues that impact speed, reliability, or quality across the stack, you will diagnose root causes, foster consensus on solutions, and instigate organizational change to resolve them.Prior experience in building space ground systems or aerospace is not a requirement. You will lead critical, greenfield initiatives that hold strategic importance for the company and possess the potential to fundamentally transform our operations.

Join our dynamic team as a Senior Java Developer and contribute to innovative software solutions in a collaborative environment. We are seeking an experienced developer who is passionate about technology and eager to tackle complex challenges. This position is ideal for individuals who thrive in a fast-paced setting and are looking to make a significant impact within our organization.

Join our dynamic team at Artech Information Systems LLC as a Java Developer. We are seeking an enthusiastic individual with a passion for technology and software development. This role offers the opportunity to work on exciting projects and collaborate with a talented team of professionals.

Join our dynamic team at Collabera as a Web Applications Developer. In this role, you will design, develop, and maintain innovative web applications that enhance user experience and drive business success. Collaborate with cross-functional teams to deliver high-quality solutions that meet our clients' needs.