{"schemaVersion":"jobsearcher.job.v1","id":"3a13cb7e6fa5a338ea6afda1","url":"https://jobsearcher.com/jobs/3a13cb7e6fa5a338ea6afda1","canonicalUrl":"https://jobsearcher.com/jobs/3a13cb7e6fa5a338ea6afda1","title":"Senior Fullstack Python/React Engineer - Chicago","description":"Codelitt helps companies build new products and solve their most pressing problems with the speed, technology, and innovation of a startup. We are passionate about improving the lives of our users through the products we build.\n\nWe have an onsite position for both Toronto - Canada and Chicago Illinois - US\n\nWe are seeking a highly skilled FullStack Python/React Engineer to join a fast-paced AI/ML project focused on integrating large datasets for querying structured and unstructured data. You will work closely with JLL’s EDP (Enterprise Data Platform) team to build connectors between various data sources and the AI framework. The role is part of a rapid-development, startup-like environment within a large organization, offering the opportunity to contribute to cutting-edge AI initiatives.\n\nThis position is a contracting one. It is a 6 months one with the possibility of renewing for 2+ years.\nWho You Are:\nWorking in a fast-paced, always-changing tech environment excites you. Codelitt works on innovation, and that happens fast! The projects we design are architectured for the next year.\nYou are passionate about communication transparency.\nYou believe that communication is the core of a collaborative team.\nYou are a seeker of improvements, lover of feedback, always curious, and never satisfied - continually learning and improving.\nYou have the grit and motivation to push yourself forward.\nWhat You’ll Do:\nDevelop and implement data connectors for structured (SQL) and unstructured (blob storage, documents) data.\nIntegrate with various third-party applications like CRM systems, AWS (S3), Confluence, and others.\nWork on small React frontends\nCollaborate with the AI/ML teams to ensure seamless ingestion of data into the AI query platform.\nEnsure scalability and performance optimization of the data connectors.\nMaintain and update Python-based systems while ensuring code quality through testing and best practices.\nWork in close collaboration with the JLL team, including attending in-office meetings 1-2 times per week.\nRequirements:\n5+ years of Python development experience, with a focus on backend systems.\n2+ years of React development experience\nStrong experience with data integration, APIs, and developing connectors.\nFamiliarity with AWS services, especially S3.\nExperience with data querying and working with both structured and unstructured data.\nStrong critical thinking skills and experience working in agile, fast-paced environments.\nKnowledge of version control systems (Git) and CI/CD pipelines.\nStrong communication skills and the ability to collaborate closely with team members in a hybrid work environment.\nAvailability to work in the Chicago or Toronto offices at least 1-2 times per week.\nNice to have\nExperience working with AI/ML pipelines or frameworks.\nPrevious experience in the real estate domain.","company":"Codelitt","rawCompany":"codelitt","city":"Chicago","state":"IL","isRemote":false,"isActive":false,"createdAt":"2026-04-12T21:02:10.763Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1254.00","title":"Web Developers","slug":"web-developers"},{"code":"15-2051.00","title":"Data Scientists","slug":"data-scientists"}],"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 Fullstack Python/React Engineer - Chicago","description":"Codelitt helps companies build new products and solve their most pressing problems with the speed, technology, and innovation of a startup. We are passionate about improving the lives of our users through the products we build.\n\nWe have an onsite position for both Toronto - Canada and Chicago Illinois - US\n\nWe are seeking a highly skilled FullStack Python/React Engineer to join a fast-paced AI/ML project focused on integrating large datasets for querying structured and unstructured data. You will work closely with JLL’s EDP (Enterprise Data Platform) team to build connectors between various data sources and the AI framework. The role is part of a rapid-development, startup-like environment within a large organization, offering the opportunity to contribute to cutting-edge AI initiatives.\n\nThis position is a contracting one. It is a 6 months one with the possibility of renewing for 2+ years.\nWho You Are:\nWorking in a fast-paced, always-changing tech environment excites you. Codelitt works on innovation, and that happens fast! The projects we design are architectured for the next year.\nYou are passionate about communication transparency.\nYou believe that communication is the core of a collaborative team.\nYou are a seeker of improvements, lover of feedback, always curious, and never satisfied - continually learning and improving.\nYou have the grit and motivation to push yourself forward.\nWhat You’ll Do:\nDevelop and implement data connectors for structured (SQL) and unstructured (blob storage, documents) data.\nIntegrate with various third-party applications like CRM systems, AWS (S3), Confluence, and others.\nWork on small React frontends\nCollaborate with the AI/ML teams to ensure seamless ingestion of data into the AI query platform.\nEnsure scalability and performance optimization of the data connectors.\nMaintain and update Python-based systems while ensuring code quality through testing and best practices.\nWork in close collaboration with the JLL team, including attending in-office meetings 1-2 times per week.\nRequirements:\n5+ years of Python development experience, with a focus on backend systems.\n2+ years of React development experience\nStrong experience with data integration, APIs, and developing connectors.\nFamiliarity with AWS services, especially S3.\nExperience with data querying and working with both structured and unstructured data.\nStrong critical thinking skills and experience working in agile, fast-paced environments.\nKnowledge of version control systems (Git) and CI/CD pipelines.\nStrong communication skills and the ability to collaborate closely with team members in a hybrid work environment.\nAvailability to work in the Chicago or Toronto offices at least 1-2 times per week.\nNice to have\nExperience working with AI/ML pipelines or frameworks.\nPrevious experience in the real estate domain.","datePosted":"2026-04-12T21:02:10.763Z","dateModified":"2026-04-12T21:02:10.763Z","hiringOrganization":{"@type":"Organization","name":"Codelitt","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Chicago","addressRegion":"IL","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"3a13cb7e6fa5a338ea6afda1"},"url":"https://jobsearcher.com/jobs/3a13cb7e6fa5a338ea6afda1"}}