{"schemaVersion":"jobsearcher.job.v1","id":"052eadafce05435a0c6c5d56","url":"https://jobsearcher.com/jobs/052eadafce05435a0c6c5d56","canonicalUrl":"https://jobsearcher.com/jobs/052eadafce05435a0c6c5d56","title":"Mid Level Fullstack Engineer (React/Front End focus)","description":"We’re partnering with a high-growth SaaS company building AI-powered products and are looking for a Mid-level Fullstack Software Engineer to join a small, fast-moving team. This role is front-end heavy (React/TypeScript) with meaningful exposure to backend services in Node.js/Express/Nest. You’ll ship features end-to-end, collaborate closely with product/design, and help scale a modern AI-driven web application.What you’ll doBuild and maintain production React/TypeScript frontends, translating product requirements into clean, reusable components and flowsImplement responsive UI and state management, integrating with REST/JSON or GraphQL APIs and handling auth, error states, and performance optimizationsContribute to backend services using Node.js with Express and/or Nest.js, including API endpoints, business logic, and integrations with third-party services and internal AI servicesWork on AI-powered product features (e.g., integrating existing AI/ML services, orchestrating prompts, wiring up model outputs into UX) in collaboration with senior engineersWrite maintainable, well-tested code, participate in code reviews, and help improve our engineering standards, tooling, and CI/CD practicesCollaborate cross-functionally with Product, Design, and other engineers to scope work, estimate effort, and deliver features in iterative releasesWhat we’re looking for2+ years of professional software engineering experience building web applications in a production environmentStrong hands-on experience with React in production (hooks, component composition, state management, performance optimizationsExperience with TypeScript, modern JavaScript (ES6+), HTML, and CSPractical backend experience with Node.js plus at least one of: Express or Nest.js (building APIs, working with middleware, integrating data sourcesExperience working on AI-related products is strongly preferred (this could be integrating third-party LLM APIs, building AI-assisted workflows, or contributing to ML/GenAI-backed featuresFamiliarity with relational or NoSQL databases and basic data modeling (e.g., Postgres, MySQL, MongoDB, DynamoDBComfortable using Git and collaborating in a modern dev workflow (pull requests, code reviews, feature branches, CI/CDStrong communication skills and the ability to work effectively with a distributed, cross-functional teamNice to haveExperience with Next.js or similar React frameworksExposure to cloud platforms (AWS, GCP, or Azure) and containerization (Docker)Familiarity with design systems, component libraries, and front-end performance profilingPrior experience in a startup or fast-paced product environment, especially shipping AI or data-heavy featuresWhy this opportunityWork on real, user-facing AI features rather than pure infrastructure or internal toolsJoin a small, focused engineering team where your impact on product direction and technical decisions is visibleModern tech stack centered around React/TypeScript and Node.js, with room to grow deeper on both front and backend.","company":"Colossus Technologies Group","rawCompany":"colossus technologies group","city":"South Yarmouth","state":"MA","isRemote":false,"isActive":false,"createdAt":"2026-07-03T08:55:27.552Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1254.00","title":"Web Developers","slug":"web-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"}],"industries":[{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Mid Level Fullstack Engineer (React/Front End focus)","description":"We’re partnering with a high-growth SaaS company building AI-powered products and are looking for a Mid-level Fullstack Software Engineer to join a small, fast-moving team. 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You’ll ship features end-to-end, collaborate closely with product/design, and help scale a modern AI-driven web application.What you’ll doBuild and maintain production React/TypeScript frontends, translating product requirements into clean, reusable components and flowsImplement responsive UI and state management, integrating with REST/JSON or GraphQL APIs and handling auth, error states, and performance optimizationsContribute to backend services using Node.js with Express and/or Nest.js, including API endpoints, business logic, and integrations with third-party services and internal AI servicesWork on AI-powered product features (e.g., integrating existing AI/ML services, orchestrating prompts, wiring up model outputs into UX) in collaboration with senior engineersWrite maintainable, well-tested code, participate in code reviews, and help improve our engineering standards, tooling, and CI/CD practicesCollaborate cross-functionally with Product, Design, and other engineers to scope work, estimate effort, and deliver features in iterative releasesWhat we’re looking for2+ years of professional software engineering experience building web applications in a production environmentStrong hands-on experience with React in production (hooks, component composition, state management, performance optimizationsExperience with TypeScript, modern JavaScript (ES6+), HTML, and CSPractical backend experience with Node.js plus at least one of: Express or Nest.js (building APIs, working with middleware, integrating data sourcesExperience working on AI-related products is strongly preferred (this could be integrating third-party LLM APIs, building AI-assisted workflows, or contributing to ML/GenAI-backed featuresFamiliarity with relational or NoSQL databases and basic data modeling (e.g., Postgres, MySQL, MongoDB, DynamoDBComfortable using Git and collaborating in a modern dev workflow (pull requests, code reviews, feature branches, CI/CDStrong communication skills and the ability to work effectively with a distributed, cross-functional teamNice to haveExperience with Next.js or similar React frameworksExposure to cloud platforms (AWS, GCP, or Azure) and containerization (Docker)Familiarity with design systems, component libraries, and front-end performance profilingPrior experience in a startup or fast-paced product environment, especially shipping AI or data-heavy featuresWhy this opportunityWork on real, user-facing AI features rather than pure infrastructure or internal toolsJoin a small, focused engineering team where your impact on product direction and technical decisions is visibleModern tech stack centered around React/TypeScript and Node.js, with room to grow deeper on both front and backend.","datePosted":"2026-07-03T08:55:27.552Z","dateModified":"2026-07-03T08:55:27.552Z","hiringOrganization":{"@type":"Organization","name":"Colossus Technologies Group","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"South Yarmouth","addressRegion":"MA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"052eadafce05435a0c6c5d56"},"url":"https://jobsearcher.com/jobs/052eadafce05435a0c6c5d56"}}