{"schemaVersion":"jobsearcher.job.v1","id":"322b070cf4757d58206d6bf2","url":"https://jobsearcher.com/jobs/322b070cf4757d58206d6bf2","canonicalUrl":"https://jobsearcher.com/jobs/322b070cf4757d58206d6bf2","title":"Principal React/.NET Developer","description":"New York\nLab49 – Software Engineering /\nFull-time /\nOn-site\nApply for this job\nLab49 seeking an experienced Principal React/.NET Developer with a primary focus in UI technologies such as Javascript, Typescript, React. This is a unique opportunity to elevate your career and gain unparalleled experience in one of the world's most dynamic business hubs.\nAs a Principal React/.NET Developer at Lab49, you will be at the forefront of driving transformative change for our esteemed Financial Services clients. Operating within an Agile environment, you will tackle complex and challenging projects, leveraging your robust experience in front-end frameworks to design and construct the next generation of technology solutions.\nRequired Skills and Experience:\n10+ years of commercial-grade web development experience.\n5+ years of experience in modern JavaScript, ideally TypeScript, building web applications with React.\n5+ years of solid hands-on experience in either functional coding in .NET development.\nCollaborate with designers and other partners to provide input on design & wireframing.\nExperience with Agile development methodologies.\nStrong interpersonal and organizational skills.\nKnowledge of, and strong demonstrated interest in, global financial markets and financial products is a strong plus.\nBachelor’s or Master's degree in Computer Science, Engineering, Physics, Math, or related work experience.\nNice to Have:\nExperience working in a microservices setup\nFamiliarity working with Material UI, Terraform, Entity Framework, and SQL queries\nCloud experience (AWS preferred)\nExposure to and experience with CI/CD tools (TeamCity and Jenkins preferred)\nWhy Lab49?\nLab49 is an established partner for most financial institutions on Wall Street. You will gain exposure into a variety of environments, business domains, technologies, and people. Your ability to bring drive and creativity to the role will be the key component to success at Lab49. The broad and intense exposure to a variety of challenges accelerates your career growth, and Lab49’s structure is designed to enable you to learn and grow as an engineer and consultant.\nThe base salary range is:\nSenior to Leadership level - $180,000 - $220,000\nBase salary is only one component of our total compensation package. Employees may be eligible for a discretionary bonus, which is determined upon company and individual performance.\nSalary range disclosure as required by S9427A when hiring in New York.\n\nOur total rewards program is designed to support employee well-being and professional growth. We offer a competitive benefits package including a discretionary bonus, paid holidays, a 401(k), and comprehensive medical, dental, and vision coverage. Additional benefits include life insurance, short and long-term disability, Commuter FSA, Family Building Benefits, and more. All benefits are subject to eligibility requirements.\nLab49/ION is committed to maintaining a supportive and inclusive environment for people with diverse backgrounds and experiences. We respect the varied identities, abilities, cultures, and traditions of the individuals who comprise our organization and recognize the value that different backgrounds and points of view bring to our business.\nLab49/ION adheres to an equal employment opportunity policy that prohibits discriminatory practices or harassment against applicants or employees based on any legally impermissible factor.\nWe may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.","company":"Lab49","rawCompany":"lab49","city":"New York","state":"NY","isRemote":false,"isActive":false,"createdAt":"2026-04-14T11:11:48.228Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1254.00","title":"Web Developers","slug":"web-developers"},{"code":"15-1299.00","title":"Computer Occupations, All Other","slug":"computer-occupations-all-other"}],"industries":[{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Principal React/.NET Developer","description":"New York\nLab49 – Software Engineering /\nFull-time /\nOn-site\nApply for this job\nLab49 seeking an experienced Principal React/.NET Developer with a primary focus in UI technologies such as Javascript, Typescript, React. This is a unique opportunity to elevate your career and gain unparalleled experience in one of the world's most dynamic business hubs.\nAs a Principal React/.NET Developer at Lab49, you will be at the forefront of driving transformative change for our esteemed Financial Services clients. Operating within an Agile environment, you will tackle complex and challenging projects, leveraging your robust experience in front-end frameworks to design and construct the next generation of technology solutions.\nRequired Skills and Experience:\n10+ years of commercial-grade web development experience.\n5+ years of experience in modern JavaScript, ideally TypeScript, building web applications with React.\n5+ years of solid hands-on experience in either functional coding in .NET development.\nCollaborate with designers and other partners to provide input on design & wireframing.\nExperience with Agile development methodologies.\nStrong interpersonal and organizational skills.\nKnowledge of, and strong demonstrated interest in, global financial markets and financial products is a strong plus.\nBachelor’s or Master's degree in Computer Science, Engineering, Physics, Math, or related work experience.\nNice to Have:\nExperience working in a microservices setup\nFamiliarity working with Material UI, Terraform, Entity Framework, and SQL queries\nCloud experience (AWS preferred)\nExposure to and experience with CI/CD tools (TeamCity and Jenkins preferred)\nWhy Lab49?\nLab49 is an established partner for most financial institutions on Wall Street. You will gain exposure into a variety of environments, business domains, technologies, and people. Your ability to bring drive and creativity to the role will be the key component to success at Lab49. The broad and intense exposure to a variety of challenges accelerates your career growth, and Lab49’s structure is designed to enable you to learn and grow as an engineer and consultant.\nThe base salary range is:\nSenior to Leadership level - $180,000 - $220,000\nBase salary is only one component of our total compensation package. Employees may be eligible for a discretionary bonus, which is determined upon company and individual performance.\nSalary range disclosure as required by S9427A when hiring in New York.\n\nOur total rewards program is designed to support employee well-being and professional growth. We offer a competitive benefits package including a discretionary bonus, paid holidays, a 401(k), and comprehensive medical, dental, and vision coverage. Additional benefits include life insurance, short and long-term disability, Commuter FSA, Family Building Benefits, and more. All benefits are subject to eligibility requirements.\nLab49/ION is committed to maintaining a supportive and inclusive environment for people with diverse backgrounds and experiences. We respect the varied identities, abilities, cultures, and traditions of the individuals who comprise our organization and recognize the value that different backgrounds and points of view bring to our business.\nLab49/ION adheres to an equal employment opportunity policy that prohibits discriminatory practices or harassment against applicants or employees based on any legally impermissible factor.\nWe may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.","datePosted":"2026-04-14T11:11:48.228Z","dateModified":"2026-04-14T11:11:48.228Z","hiringOrganization":{"@type":"Organization","name":"Lab49","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"New York","addressRegion":"NY","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"322b070cf4757d58206d6bf2"},"url":"https://jobsearcher.com/jobs/322b070cf4757d58206d6bf2"}}