Top Tech Jobs & Startup Jobs in Chicago, IL

Senior backend engineer responsible for designing and implementing new features, scaling and optimizing the platform, improving Postgres and Elasticsearch performance, fine-tuning LLMs, and making architectural decisions. Collaborate with engineering team, take ownership of features, write performant, maintainable code, and help shape product and infrastructure for data-intensive applications (NLP, search, indexing).

Opportunity for software developers, founders, engineering teams, and code owners to submit existing repositories for licensing evaluation. Eligible code includes abandoned startups, personal projects, internal tools, SaaS products, and discontinued applications. Applicants must own or legally control the code and exclude unauthorized third-party material. Compensation is based on agreed licensing terms, with reference rates for non-exclusive licensing.

Supports laboratory instrument sales across the Central Region by demonstrating products, prospecting, following up on leads, preparing quotations, managing customer relationships, and coordinating key accounts. Uses Salesforce for opportunity management and reporting, develops territory sales plans, presents to professional organizations, and learns scientific principles related to metallurgical, spectroscopy, thermal, and elemental analysis equipment.

Manage data collection and market research for telecom and datacenter suppliers, support RFP/RFQ creation, build vendor partnerships, coordinate cross-functional evaluation and contracting, track supplier performance and market trends, and provide data-driven recommendations to inform network expansion and procurement strategy.

General application to match applicants with Launch Institute of Technology training programs in AI, clean energy, and advanced technology. Collects background, interests, and location to determine program eligibility and availability (remote/hybrid varies by state).

Create and optimize high-quality, mobile-optimized character shaders and material workflows in Unity URP. Develop master materials, tools, and editor extensions (C#). Profile and debug performance on iOS/Android, collaborate with artists on look development, and ensure efficient rendering across mobile devices.

Build and maintain fundraising technology that supports donors, fundraisers, donation processing, and reporting. Responsibilities include website development, backend integrations, legacy-system maintenance, data processing, testing, launches, bug fixes, incident ownership, and on-call support during peak donation periods. The role requires autonomous work with Laravel, PHP, JavaScript, HTML, CSS, Salesforce, WordPress, SQL, and partner CSV files, along with close collaboration with non-engineering fundraising teams.

Serve as the CEO's strategic and operational right hand at an AI LegalTech startup: prepare executive/board/investor materials, build financial models and decks, contribute litigation expertise to product content, validate LLM-generated analyses, drive cross-functional execution, manage company operations (recruiting, vendor administration, OKRs), represent the CEO, and handle special projects across finance, legal, and partnerships.

Serve as primary contact for royalty/interest owners: respond to inquiries, research and resolve ownership issues, maintain ownership records, coordinate stakeholder communications, and produce audit-ready letters and reports on project timelines.

Collect, clean, and analyze sports data; develop machine learning and predictive models; create visualizations and reports; collaborate with data and sports strategy teams; and monitor advances in sports analytics.