Senior/Staff/Principal Platform Back-End and Platform Front-End Engineers – New York – On-Site – Opportunity to join one of the Fastest-Growing and Well-Known Fin-Tech Start-Ups in NYC (New York)

Senior/Staff/Principal Platform Back-End and Platform Front-End Engineers – New York – On-Site – Opportunity to join one of the Fastest-Growing and Well-Known Fin-Tech Start-Ups in NYCThis young and agile company, building a cutting-edge commerce network is currently seeking Platform Back End and Platform Front-End Engineers of all levels!You will assist with the continuous expansion and optimization of their services in a frontier space.This is an excellent opportunity for an experienced Platform Software Engineer, looking to join an ambitious start-up, to take the next step into a challenging position with a company offering significant growth potential.About the Company:Valued at over $11bn having raised over $250m in their Series B funding in 2025.Launched in the 2020's, this is phenomenal growthTheir network has already reached more than 4.5 million peopleThey have already acquired some smaller FintechsThey launched their new product in 2026About the Senior/Staff/Principal Platform Back-End and Platform Front-End Engineer Vacancies:Back-End:In addition to coaching and mentoring junior resources and working with other team members and stakeholders, your duties will include designing, deploying, and documenting the back-end services for the website and mobile app.Additionally, you will promote best practices, guarantee that integrations are technically feasible, and optimise the application for optimal speed, scalability, and dependability.• Propose and enhance automation initiatives related to infrastructure as code, CI/CD, monitoring and alerting• Contribute to all phases of the development lifecycle• Write well-designed, testable, and efficient code• Become a foundational member of their team, working alongside the Head of Engineering and Head of ProductFront-End:In order to develop user-facing features, you will work directly with the frontend engineering and product teams across the React/JavaScript stack• Write well designed, testable, efficient code• Identify opportunities to refactor and make features more robust• Coordinate with QA to test new features• Be responsible for writing unit and integration tests• Work together with the backend team to come up with requirements for an APIIdeal Requirements for the Senior/Staff/Principal Platform Back-End and Platform Front-End Engineer Vacancies:- 6+ Years of Experience- Back-End: Any language, good Platform experience- Front-End: 6+ years of React experience- Platform experience- Proven experience in React Native, TypeScript/JavaScript, Redux/Global state management frameworks- Strong UX design skills, problem solving, and troubleshooting skills.- Understanding of how to optimize the delivery of code and assets to a browser or device- Ability to articulate the benefits and challenges of depending on front-end libraries, frameworks, and tool-sets- Ability to write testable code- Start-Up Experience - nice to haveApply to the Role:Roles like these are snapped up very quickly, so act now if you do not want to miss out! Reply to this advert or email your CV to richard@weareorbis.com