Senior Full-Stack Engineer (Node.js, NestJS, React.js)

teamworks is looking for a Senior Full Stack Software Engineer based in the United States. This position centers on building and maintaining applications with Node.js and React. Role overview This engineer will play a key part in designing and developing software that supports a strong user experience. The role involves working closely with colleagues from d…

Join our dynamic team at Resourceful Talent Group as a Full-Stack Developer specializing in React Native, Node.js, GraphQL, MongoDB, and React. This role is fully remote, allowing you the flexibility to work from your own dedicated space. Collaborate with talented developers and QA specialists to enhance our mobile application and backend services, ensuring seamless functionality and user experience.Key ResponsibilitiesDesign and implement features for our React Native mobile application, including chat functionalities, job postings, notifications, geolocation, and payment processes.Create and optimize backend APIs leveraging Node.js, GraphQL, and MongoDB.Develop and maintain React-based web components that support application workflows and admin dashboards.Ensure the integrity of data models and assist in technical enhancements, such as TypeScript adoption and schema updates.Engage in daily collaboration with team members based in the London timezone, ensuring effective communication and teamwork.

CentralReach creates software that supports autism and IDD care, including Applied Behavior Analysis (ABA), multidisciplinary therapy, and special education. Over 200,000 therapy providers, educators, and employers use CentralReach to deliver and manage therapy and support services. Role overview The Senior Full Stack Software Engineer (.NET/React) plays a key role in designing, building, and delivering scalable software across the CentralReach platform. This is a remote position for candidates located in the US. The work involves hands-on development with both .NET backend services and React frontends. The role requires taking projects from early design stages through to production release. What you will do Architect, build, and deploy software solutions that support CentralReach’s large user base Develop and maintain backend services using .NET technologies Create dynamic, responsive user interfaces with React Collaborate with product, design, and engineering teams to deliver features that address customer needs Contribute to technical direction and help improve system reliability Own projects from concept through launch Collaboration This position works closely with cross-functional teams, including product managers, designers, and engineers, to shape features and guide technical decisions. Regular collaboration is part of the role.

Hello! Thank you for your interest in our exciting opportunity.At South Geeks, we are dedicated to linking exceptional engineering talent from Latin America with innovative companies that are making a global impact. We prioritize long-lasting partnerships, robust technical environments, and fostering growth, contribution, and success for professionals.About Our ClientOur client is a premier digital asset and cryptocurrency platform, offering institutional-level trading infrastructure, liquidity solutions, and secure financial technology services. Their platform handles high-volume transactions and intricate financial workflows, demanding high engineering standards, scalability, and reliability.Your RoleWe are in search of a Senior Full-Stack Engineer to engage in backend, frontend, and database layers within a dynamic fintech setting. This hands-on senior position requires you to design and implement new features, maintain and refactor existing systems, estimate and plan technical tasks, while ensuring optimal performance and reliability across a high-availability platform. Collaboration with cross-functional teams is essential, as is taking ownership of technical decisions and deliverables.

About Us SharkNinja is a leading global product design and technology firm renowned for our diverse range of 5-star rated lifestyle solutions that enhance daily life in homes worldwide. With two trusted global brands, Shark and Ninja, our reputation for disruptive innovation and successful market entries across various product categories has fueled our growth, allowing us to capture significant market share. Headquartered in Needham, Massachusetts, we employ over 4,100 dedicated professionals, and our products are available through major retailers and online platforms globally. We are on the lookout for a talented Senior Full Stack Software Engineer to join our dynamic team. In this role, you will contribute to our rapidly evolving suite of single-page applications and RESTful APIs. Your primary focus will be on designing and enhancing our custom Sales and Demand Planning application, a vital tool for driving our global sales forecasting. You will write clean, scalable, high-performance code while engaging in the optimization and maintenance of our data analytics strategy. Our technology stack includes Node.js, MS SQL Server, AngularJS, Vue.js, and MongoDB.

About SomethingsAt Somethings, we are pioneering the first social wellness platform designed specifically for teens. Our mission is to connect teens with mentors who understand and support them, facilitating meaningful relationships that promote growth and healing.With 25 million teens in the U.S. facing mental health challenges, each download of our app represents a potential lifeline. We strive to ensure that not only do these teens engage with our platform, but they also build connections with caring individuals who can guide them towards a healthier future.Backed by General Catalyst and leading investors in healthcare and consumer markets, we are experiencing rapid growth—having increased our user base by 1100% in 2025 and projecting to multiply our reach fivefold in 2026.If you are eager to contribute to a company that is poised to redefine mental health support for a generation, we invite you to join us.Role OverviewWe are seeking a Full Stack React Native Engineer to become part of our dedicated engineering team. In this role, you will play a vital part in developing the core product experiences that propel our mission forward.Your work will be characterized by high agency and a profound impact:You will actively influence the product features that help teens connect and improve their well-being.What You’ll DoYour responsibilities will extend beyond just building features; you will take complete ownership of critical projects aligned with our strategic objectives for 2026:1. Create Enriching Teen × Mentor ExperiencesDevelop engaging mobile experiences that evoke warmth, speed, and a human touch.Enhance the onboarding process and early engagement to optimize the initial user journey.Design user interfaces that are as intuitive and addictive as leading social applications.2. Develop Scalable Tools for Our Mentor NetworkBuild mentor-focused features that enhance consistency, efficiency, and connectivity.Create safety mechanisms that proactively identify risks and mitigate human error.Refine mentor workflows to ensure they feel empowered by our tools.3. Lead Full-Stack Product DevelopmentConstruct end-to-end features utilizing React Native, backend services, and APIs.Collaborate closely with design, product, growth, and clinical operations teams.Conduct user interviews with teens and mentors to gain deep insights into their needs.

Hello and thank you for considering this opportunity!We are thrilled to share information about our open position at southgeeks. We welcome your inquiries and encourage you to apply, even if you don't possess every skill listed!About UsAt southgeeks, we connect exceptional Software Developers and Data Analysts from Latin America with clients around the globe. Our mission is to create remarkable products and foster enduring partnerships with our clients. We take pride in our commitment to social responsibility, reflected in the outstanding performance of our teams and the strong relationships we build.About the ClientOur client is revolutionizing the rental experience for over 20 million landlords and 100 million tenants in the United States. They have developed a highly-rated all-in-one platform that simplifies the rental process from beginning to end.About the RoleWe are seeking a Senior Full Stack Engineer to join a dynamic product and engineering team. In this role, you will collaborate closely with leadership to design and implement scalable features across a cutting-edge tech stack, making a significant impact on user growth and retention. You will work cross-functionally to bring innovative features to life and support a rapidly expanding user base of hundreds of thousands.Key ResponsibilitiesLead and deliver major features within the React + Node.js codebase.Rapidly prototype, test, and refine new product ideas.Design clean, modular, and scalable solutions utilizing Firebase and Google Cloud Platform.Develop integrations with partners such as Stripe, TransUnion, and Home Depot.Work closely with Product and Design teams to elevate the user experience.Conduct code reviews and provide mentorship to enhance team efficiency and code quality.What You Need to Succeed6+ years of experience in software development using Node.js and React (including Redux and Tailwind) in serverless environments like Cloud Functions or AWS Lambdas.Strong experience with NoSQL infrastructure, particularly Firebase (Realtime DB, Auth, Cloud Functions).Proven experience designing and maintaining large-scale, serverless architectures.

About Egen: Egen is a rapidly expanding, entrepreneurial firm driven by a data-first philosophy. We unite top engineering talent with cutting-edge technology platforms, such as Google Cloud and Salesforce, to empower our clients with actionable insights derived from data. Our commitment to fostering a workplace where exceptional talent can thrive ensures that our team members can leverage their engineering and technology skills to envision transformative solutions that positively impact the world. We prioritize continuous learning, thrive on tackling complex challenges, and consistently innovate to deliver swift, effective outcomes. If this resonates with you, we are eager to welcome you to our team. Curious about life at Egen? Explore these resources alongside the job description. Discover EgenExperience Life at EgenExplore Egen's Culture and ValuesCareer Development Opportunities at EgenEmployee Benefits at Egen About the Opportunity: We are seeking a Senior Full Stack Engineer to architect and develop applications and services that translate AI/ML insights into tangible user experiences. This role serves as a vital link between raw data/models and user interaction, delivering solutions that are intuitive, high-performing, and scalable. Your expertise will span the full stack, from server-side APIs and microservices to dynamic front-end interfaces, ensuring seamless integration with our AI/ML ecosystem.

Join Our Team at TruelogicTruelogic is a premier provider of nearshore staff augmentation services, headquartered in New York. With over 20 years of experience, we deliver exceptional technology solutions to businesses of all sizes, from groundbreaking startups to established industry leaders, assisting them in realizing their digital transformation objectives.Our diverse team of over 600 talented tech professionals, located in Latin America, drives digital innovation by collaborating with U.S. companies on their most significant projects. From Fortune 500 enterprises to nimble startups, we deliver impactful results that make a difference.By applying for this role, you are taking an exciting step towards joining a vibrant team that values your expertise and aspirations. We are committed to aligning your skills with opportunities that promote outstanding career growth and success while contributing to transformative projects that shape the future of technology.Our ClientOur client is dedicated to enhancing assisted reproduction technology by developing customized applications that boost efficiency and transparency within the industry. They are currently seeking a skilled Lead Full-Stack Developer to join their fully remote development team, where we create specialized software to improve outcomes in the assisted reproduction technology sector.Job SummaryAs a Senior Full-Stack Engineer, you will serve as the technical leader and delivery anchor for your team. You will maintain a hands-on approach with the codebase while being the primary decision-maker for architecture and feature implementation. This role is ideal for a "player-coach" who enjoys mentoring developers and collaborating with Product and Design teams to transform visions into production-ready solutions.Your contributions will include developing reliable and elegant solutions, whether it involves creating a new API, designing a dynamic front-end view, or integrating AI-based assistant features with our internal data.

DNSFilter builds products that help customers and partners improve online safety. The company focuses on network security, delivering threat protection and content filtering solutions that are fast, accurate, and reliable. DNSFilter uses AI-powered threat intelligence to help clients address risks before they impact networks. The team values collaboration, innovation, and measurable results, with each member contributing to the mission of securing the internet. As DNSFilter grows, the team is expanding its product features and solutions for a global audience. The company is looking for a Senior Full-Stack Software Engineer with strong experience in React and NextJS to help modernize applications and transition to a new design system. This is a fully remote, full-time role for candidates based in the United States or Canada, with preference for those able to work hybrid from the Westchase, Florida office and during Eastern Time hours. Experience in high-growth SaaS environments is valued. What you will do Work across the full stack, including React, NextJS, MUI, Golang, Ruby, and .NET, as part of the Engineering organization. Collaborate with engineers, UX, and other stakeholders to build modular solutions using the new design system. Deliver meaningful business value to customers through your work. Expand your expertise across the technologies in the DNSFilter ecosystem. Use AI to enhance learning and productivity, and support AI initiatives within the department. Requirements Specialization in React and NextJS development. Proven track record of delivering high-quality code. Ability to work effectively in a fully remote setting. Experience working in a SaaS startup or scale-up environment, ideally in a fast-growing company. Located in the United States or Canada; preference for those able to work hybrid from Westchase, Florida. Available to work full-time during Eastern Time hours. DNSFilter encourages applicants from all backgrounds, recognizing the value of diverse experiences and transferable skills in driving innovation and excellence.

FieldAI is at the forefront of the robotics revolution, bringing together embodied AI with cutting-edge robotics and real-world deployments. Located in the vibrant robotics hub of Southern California, our Irvine team develops AI systems that are not only reliable but also risk-aware and ready for field applications. If you are passionate about delivering tangible results and want to see your software in action on real hardware, you've found the right team. We utilize innovative engineering practices and advanced learning systems that have been tested in real-world scenarios, continuously improving with every deployment.We are seeking a talented Full-Stack Software Engineer to join our team in creating robust web applications that harness real-time data from our robotics and AI systems. In this role, you will be responsible for developing scalable applications using a modern TypeScript / React / Node.js stack. You will take ownership of features from backend to frontend, significantly influencing user interaction with our platform.This is an exciting opportunity for engineers who thrive on delivering high-quality production systems, engaging with all layers of the technology stack, and contributing to products that have a real impact in the field.

Please be aware that we will never ask for payment or bank account information during the recruitment process. As our teams expand, we encourage you to be vigilant against fraudulent job postings or recruitment activities that misuse our name and information. Please safeguard your personal information throughout any recruitment process. Although monks may reach out to potential candidates via LinkedIn, all applications must be submitted through our official website (monks.com/careers).About the RoleWe are seeking an exceptional Senior Full Stack Engineer to join our global business development and strategy team. This is a chance to become part of a dynamic team that significantly contributes to the success of our organization by leveraging technology. You will play a pivotal role in advancing our technology vision and ensuring effective execution across various initiatives.Key QualificationsA minimum of 7 years of experience, ideally collaborating within a team environment.Extensive expertise in React, TypeScript, and JavaScript (Node.js).Experience in deploying containerized services to cloud platforms such as AWS or Google Cloud.Proficient in relational database systems such as PostgreSQL or MySQL.A proven track record of designing, building, delivering, and maintaining critical web-based software.A passion for thriving in a fast-paced and dynamic environment.Highly organized, detail-oriented, and thorough in all tasks.Outstanding verbal and written communication skills.Job ResponsibilitiesThis senior full-stack engineering role involves close collaboration with fellow engineers, designers, and project managers to plan, design, build, and deliver high-quality software.Your responsibilities will encompass:Independently designing and implementing reliable web applications and APIs.Writing high-quality, testable code with thorough test coverage and reviewing peer contributions.Engaging in architecture and technical decision-making with strong analytical skills.Utilizing software engineering pipeline tools (CI/CD, unit testing, manual testing, etc.).Researching and developing new technologies while creating proofs of concept.

SciTec, a proud subsidiary of Firefly Aerospace, is a pioneering force in the realm of non-traditional defense contracting, dedicated to delivering cutting-edge technologies that bolster U.S. National Security and Defense initiatives. With over 45 years of experience, our organization has consistently supported Department of Defense clientele by creating innovative remote sensing algorithms, tools, and techniques aimed at enhancing world-class data exploitation capabilities for missions related to missile defense, intelligence, surveillance, reconnaissance, space domain awareness, and aircraft survivability.Important Notice: All employees must be U.S. citizens due to the nature of our government contracts. Applicants who do not meet this requirement will not be considered.We are on the lookout for a Full Stack Software Engineer who will be responsible for designing, developing, and maintaining user-facing web applications alongside backend services tailored for real-time data and geospatial information systems. This position emphasizes the creation of dependable, visually engaging, and high-performance applications that function seamlessly in mission-critical contexts.The ideal candidate should possess a strong capability to navigate the entire stack—from frontend user interfaces to backend data processing pipelines—and excel in a collaborative, Agile development setting.ResponsibilitiesDesign, develop, and maintain both frontend and backend software, encompassing code, tests, and documentation.Build and integrate user interfaces along with data pipelines for real-time and geospatial data visualization.Design, prototype, and implement user-centric interfaces that effectively translate customer needs into intuitive solutions.Maintain and enhance 24/7 user-facing applications that manage, display, and monitor real-time data.Identify and rectify software defects and security vulnerabilities.Collaborate with team members during Agile ceremonies, including standups, sprint planning, and retrospectives.Contribute to architectural discussions and technical design decisions.Ensure adherence to software engineering best practices, including code quality, testing, and maintainability.Support documentation and knowledge sharing across teams.Perform other duties as assigned.

About LoomWatch this loom video from our CEO, Gabe Greenberg for a deeper insight into the role!Role OverviewAt G2i, we are pioneers in utilizing AI technology, collaborating with top AI labs and visionary tech founders to develop state-of-the-art developer platforms, data solutions, and operational dashboards that drive the future of AI.As a Senior Full-Stack Engineer, you will be instrumental in designing and developing the systems that enable this transformative innovation—delivering solutions that are fast, scalable, and elegantly engineered. Utilizing React 19 and Node.js, you will create products that harmonize cutting-edge technology with a focus on developer experience.Key ResponsibilitiesDesign, develop, and maintain comprehensive full-stack web applications utilizing React 19 and Node.js.Implement tRPC APIs to ensure type-safe, seamless communication across services.Containerize and deploy applications using Docker, maintaining efficient CI/CD workflows.Work collaboratively with designers and fellow engineers to rapidly deliver high-performance, scalable features.Uphold high standards of code quality, test coverage, and documentation.Ideal Qualifications5+ years of professional full-stack development experience (or equivalent).Demonstrated expertise in React 19 and Node.js.Proficient with Docker and cloud deployment methodologies.Experience in a startup environment—agile, pragmatic, and resourceful.Strong grasp of modern front-end patterns, server-side rendering, and performance enhancement techniques.Compensation & Terms50 - 150 USD/Hr based on experience and geographic location.Contract positions available, spanning up to 6 months.Join a remote-first, globally distributed team.

Radiology is the second most utilized healthcare service, accessed by over 51% of the workforce each year. Despite its critical importance, the process for obtaining medical imaging has remained stagnant for decades. OneImaging is revolutionizing the industry with a concierge-style approach and a premium-quality radiology network consisting of over 4,000 vetted providers across 48 states. Our innovative solution not only reduces imaging costs by 60-80% but also ensures patients and families can access essential radiology services at transparent prices without unexpected bills. This leads to immediate savings and ROI for employers and payers on every exam.What You Will Do:Design and develop full stack features using technologies such as TypeScript, React, Next.js, Node.js, Express, MongoDB, and PostgreSQL.Create responsive and accessible frontend interfaces that deliver exceptional user experiences for patients and healthcare providers.Build scalable backend services and RESTful APIs with robust authentication, authorization, and HIPAA-compliant audit logging.Develop reusable React components and uphold consistent design patterns across the application.Implement state management solutions and enhance frontend performance for complex healthcare workflows.Conduct comprehensive testing across the technology stack, including unit, integration, and end-to-end tests.Collaborate with UI/UX designers and product requirements documents to translate designs into production-ready features.Work closely with data engineering teams to incorporate analytics and business intelligence capabilities.Engage in architectural decision-making that impacts both frontend and backend systems.Optimize application performance, troubleshoot issues across the stack, and ensure minimal downtime.Utilize AWS services for deployment, including S3, CloudFront, Route 53, App Runner, and Fargate.Maintain detailed documentation for APIs, component libraries, and architectural decisions.

What You'll Be Doing:Design and implement high-performance, scalable software systems utilizing technologies such as C#, .NET, TypeScript (ES6), React.js, Redux, RxJS, Webpack, and GraphQL.Collaborate with a dynamic team to define, design, and launch innovative features.Oversee system architecture and coding standards efforts while contributing clean, efficient code.Adopt and incorporate modern software engineering best practices and patterns.Provide mentorship and guidance to junior software engineers.Conduct thorough code reviews, ensuring adherence to coding standards, best practices, and security protocols.Diagnose, troubleshoot, and upgrade existing software applications.Stay informed about emerging trends and technologies in software development to enhance product quality and processes.

Why Join Dotmatics?At Dotmatics, we are committed to integrating science, data, and decision-making to drive innovation in scientific research.Our portfolio includes leading solutions such as Luma, LumaLab Connect, ELN Platform, and many more, supporting over 2 million scientists worldwide.Our Vision: We are transforming the landscape of scientific research with our comprehensive digital science platform, designed to enhance the effectiveness of scientific enterprises, ensuring that critical advancements in health and environmental science are achieved without delay.About Us: With a global team of over 800 professionals, we are dedicated to accelerating scientific innovation and making the world a healthier, safer, and cleaner place. Join our collaborative team and make a real impact in the scientific community.

Jobgether is looking for a Senior Full-Stack Engineer with strong experience in Python and React. This position is based in the US and centers on building and improving web applications that support our product goals. What you will do Develop, test, and deploy full-stack applications using Python and React Work closely with cross-functional teams to deliver new features and improve existing ones Contribute to architecture discussions and help shape technical decisions Focus on application performance and responsive user experiences Collaboration This role involves regular interaction with team members from different areas, including product and design. Sharing ideas and feedback is encouraged to help enhance our offerings. Requirements Professional experience with both Python and React Ability to write, test, and deploy clean, maintainable code Comfort working in a collaborative environment

Join NovaTech Solutions as a Senior Full-Stack Engineer and play a crucial role in scaling our flagship platform while pioneering innovative customer-facing products. In this dynamic position, you will collaborate closely with product and design teams to define feature roadmaps and architect robust services. Your expertise will guide junior engineers, enhancing their technical growth and best practices adoption.Key Responsibilities:- Collaborate with product and design teams to establish feature roadmaps and develop resilient services.- Mentor junior engineers, providing guidance on best practices and fostering their professional development.- Create modern user interfaces with React and build scalable backend APIs using Node.js.- Maintain reliable data layers with PostgreSQL to ensure data integrity and performance.- Take ownership of product features from conception through deployment and maintenance.- Continuously enhance code quality through thorough reviews and refactoring.- Lead discussions across teams focusing on performance, security, and delivery.- Convert product requirements into maintainable and scalable solutions.- Design engaging user experiences that impress our customers.- Ensure efficient deployment pipelines and work with DevOps to monitor platform health.- Automate repetitive tasks and maintain detailed documentation for team alignment.