{"schemaVersion":"jobsearcher.job.v1","id":"6b37152a764b36645f487a2e","url":"https://jobsearcher.com/jobs/6b37152a764b36645f487a2e","canonicalUrl":"https://jobsearcher.com/jobs/6b37152a764b36645f487a2e","title":"Senior Full-Stack MERN Developer","description":"Location: Chicago, IL (Loop / Downtown – Hybrid 3 Days On-Site)\n\nEmployment Type: 6-Month Contract (Potential for extension)\n\nIndustry: Financial Services / Commercial Insurance Technology\n\nExperience Level: Mid-Senior (6–10 Years)\n\nJob Function: Software Engineering / Full-Stack Development\n\nVisa Sponsorship / Relocation: Not Available (Local Candidates Only)\n\nAbout the Role\n\nWe are seeking an experienced Senior Full-Stack MERN Developer for a 6-month hybrid contract engagement with a global enterprise insurance technology group in downtown Chicago.\n\nIn this role, you will design, develop, test, and deploy custom data analytics solutions and application modules. You will work across the full stack utilizing MongoDB, Express.js, React.js, Node.js, SQL, and AWS infrastructure, supporting complex data migrations and modern client-facing applications.\n\nKey Responsibilities\nFull-Stack Engineering: Independently design, develop, code, test, and debug web applications and technical modules using the MERN stack (MongoDB, Express, React, Node) and relational SQL databases.\nCloud & Infrastructure Maintenance: Deploy, manage, and maintain application environments on AWS infrastructure (utilizing EC2, S3, Lambda, RDS, and related services).\nData & Analytics Integration: Support custom data analytics solutions, complex SQL database queries, data migrations, and application integration.\nDevOps & Version Control: Manage source code repositories using Git (branching, merging, PR reviews) while following established deployment and testing workflows.\nTechnical Mentorship & Support: Serve as a senior technical resource and mentor for junior developers; assist with escalated tier-3 technical troubleshooting and root-cause resolution.\nAI & Modern Workflow Adoption: Leverage modern AI-driven developer tools and automated practices to optimize coding efficiency and accelerate feature delivery.\nMust-Have Qualifications\nExperience: 6 to 10 years of professional full-stack web development experience with a heavy focus on the MERN stack (MongoDB, Express.js, React.js, Node.js).\nSQL & Database Mastery: Strong proficiency in SQL databases, including complex query writing, schema design, and data manipulation.\nCloud Services: Hands-on experience deploying and managing applications on AWS cloud infrastructure.\nVersion Control: Deep experience with Git version control and collaborative developer workflows.\nEngineering Best Practices: Proven expertise in software design patterns, unit testing, debugging, CI/CD, and documentation.\nLocation & Work Model: Must reside locally in the Chicago metro area and be able to work 3 days/week on-site in downtown Chicago.\nPreferred / Bonus Skills\nExperience within the Insurance, Commercial Claims, or Risk Management domain.\nHands-on experience with TypeScript and modern containerization technologies (Docker, Kubernetes).\nExperience handling enterprise data migrations and custom analytics engine builds.","company":"Calqulate","rawCompany":"calqulate","city":"Chicago","state":"IL","isRemote":false,"isActive":false,"createdAt":"2026-08-19T18:07:59.161Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1254.00","title":"Web Developers","slug":"web-developers"},{"code":"15-1251.00","title":"Computer Programmers","slug":"computer-programmers"}],"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":"Senior Full-Stack MERN Developer","description":"Location: Chicago, IL (Loop / Downtown – Hybrid 3 Days On-Site)\n\nEmployment Type: 6-Month Contract (Potential for extension)\n\nIndustry: Financial Services / Commercial Insurance Technology\n\nExperience Level: Mid-Senior (6–10 Years)\n\nJob Function: Software Engineering / Full-Stack Development\n\nVisa Sponsorship / Relocation: Not Available (Local Candidates Only)\n\nAbout the Role\n\nWe are seeking an experienced Senior Full-Stack MERN Developer for a 6-month hybrid contract engagement with a global enterprise insurance technology group in downtown Chicago.\n\nIn this role, you will design, develop, test, and deploy custom data analytics solutions and application modules. You will work across the full stack utilizing MongoDB, Express.js, React.js, Node.js, SQL, and AWS infrastructure, supporting complex data migrations and modern client-facing applications.\n\nKey Responsibilities\nFull-Stack Engineering: Independently design, develop, code, test, and debug web applications and technical modules using the MERN stack (MongoDB, Express, React, Node) and relational SQL databases.\nCloud & Infrastructure Maintenance: Deploy, manage, and maintain application environments on AWS infrastructure (utilizing EC2, S3, Lambda, RDS, and related services).\nData & Analytics Integration: Support custom data analytics solutions, complex SQL database queries, data migrations, and application integration.\nDevOps & Version Control: Manage source code repositories using Git (branching, merging, PR reviews) while following established deployment and testing workflows.\nTechnical Mentorship & Support: Serve as a senior technical resource and mentor for junior developers; assist with escalated tier-3 technical troubleshooting and root-cause resolution.\nAI & Modern Workflow Adoption: Leverage modern AI-driven developer tools and automated practices to optimize coding efficiency and accelerate feature delivery.\nMust-Have Qualifications\nExperience: 6 to 10 years of professional full-stack web development experience with a heavy focus on the MERN stack (MongoDB, Express.js, React.js, Node.js).\nSQL & Database Mastery: Strong proficiency in SQL databases, including complex query writing, schema design, and data manipulation.\nCloud Services: Hands-on experience deploying and managing applications on AWS cloud infrastructure.\nVersion Control: Deep experience with Git version control and collaborative developer workflows.\nEngineering Best Practices: Proven expertise in software design patterns, unit testing, debugging, CI/CD, and documentation.\nLocation & Work Model: Must reside locally in the Chicago metro area and be able to work 3 days/week on-site in downtown Chicago.\nPreferred / Bonus Skills\nExperience within the Insurance, Commercial Claims, or Risk Management domain.\nHands-on experience with TypeScript and modern containerization technologies (Docker, Kubernetes).\nExperience handling enterprise data migrations and custom analytics engine builds.","datePosted":"2026-08-19T18:07:59.161Z","dateModified":"2026-08-19T18:07:59.161Z","hiringOrganization":{"@type":"Organization","name":"Calqulate","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Chicago","addressRegion":"IL","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"6b37152a764b36645f487a2e"},"url":"https://jobsearcher.com/jobs/6b37152a764b36645f487a2e"}}