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Top Tech Companies in Chicago, IL (7,768)

SearchLab
Agency • Digital Media • Marketing Tech
Chicago
36 Employees
16 Benefits
SearchLab helps businesses get found in more local searches

SearchLab is a digital marketing agency built by passionate and curious internet marketers. Our clients benefit from a strong foundation in the best practices in the industry. We frequently speak at conferences and post educational content on our blog about Local SEO and PPC.

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SearchLab
Free HealthCARE Clothing
eCommerce • Fashion
Chicago

Sustainable, eco friendly clothing upcycled and designed with natural dyes and fabrics. Created for the individual who is on the go but still maintains a sleek and sophisticated style.

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Free HealthCARE Clothing
Freebie
AdTech
Chicago

Freebie is a mobile application that enables everyday people to leverage their social influence to obtain valuable products, services or experiences for free from local merchants and brands.

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Freebie
Rosalind Franklin University of Medicine and Science
North Chicago
1,415 Employees
Hiring Now

Rosalind Franklin University is a graduate-level institution with 2,000 students dedicated to health sciences and located in North Chicago, Illinois, approximately 35 miles north of downtown Chicago. Its beautiful 97-acre campus is home to the Basic Science Building, the Health Science Building, the Morningstar Interprofessional Education Center, Multi-media Dr. John J. Sheinin Gross Anatomy Lab, Education and Evaluation Center, three...

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Rosalind Franklin University of Medicine and Science
Darktrace
Security • Cybersecurity
27 Offices
1,763 Employees
11 Benefits Hiring Now

Darktrace, a global leader in cyber security AI, delivers world-class technology that protects over 5,500 customers worldwide from advanced threats, including ransomware and cloud and SaaS attacks. The company’s fundamentally different approach applies Self-Learning AI to enable machines to understand the business in order to autonomously defend it. Headquartered in Cambridge, UK, the company has 1,500 employees and over 30 offices worldwide. Darktrace...

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Darktrace

Darktrace's Top Stability & Growth Strengths

Strong Market Position & Advantage: Analyst recognitions from Gartner, IDC, and KuppingerCole consistently place Darktrace in the Leader tier for NDR, including a repeat in 2026. This suggests durable competitive positioning in its core detection segment.

Strong Revenue Growth: Company disclosures show double-digit ARR and customer growth through FY2024, establishing momentum heading into the take-private. Trading updates and net retention indicators point to a solid recurring-revenue base prior to reduced reporting as a private company.

Investor Backing & Capital Strength: The completed $5.3B Thoma Bravo acquisition in 2024 provides access to capital and software operating expertise to support roadmap and go-to-market scale. Subsequent acquisitions and U.S. facility expansion reflect sponsor-supported investment in growth.

When (forwhen)
Artificial Intelligence • Healthtech • Insurance • Software
Chicago
24 Employees
Hiring Now
Modern offboarding and a post-employment solution for employers and employees.

When is a comprehensive, AI-driven technology platform and healthcare severance solution that provides unparalleled support for employees navigating offboarding, life changes, and the complex health insurance market, all while saving your company time and money.

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When (forwhen)

When (forwhen)'s Top Stability & Growth Strengths

Investor Backing & Capital Strength: The company raised a $4.6M seed round in 2024, bringing total funding to about $7M, signaling investor confidence. Capital is earmarked to expand its AI-driven platform, add services, and grow distribution.

Strategic Partnerships: The platform powers isolved’s Portable Alternative Coverage program and has added institutional relationships such as a university partnership, extending reach through established channels. Extensive HRIS integrations further support scalable distribution and adoption.

Innovation-Driven Growth: An AI-powered offboarding and benefits marketplace is being expanded with new services including Medicare transitions and post-employment tools. This product strategy targets an underserved niche around COBRA alternatives and transition support.

Woody Buick GMC of Naperville
Automotive • Retail • Sales
2 Offices
50 Employees
Hiring Now

Woody Buick GMC of Naperville is a family-owned automotive dealership serving the Naperville, Illinois, community. It sells new Buick and GMC vehicles alongside pre-owned cars, trucks, and SUVs, and provides dealership services including financing, leasing, and certified GM service. The company emphasizes customer satisfaction, community involvement, integrity, teamwork, and a friendly, inclusive workplace with broad inventory and customer-focused sales support.

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Woody Buick GMC of Naperville
Starfleet Media
Chicago
10 Employees

Starfleet Media is the leading provider of content marketing programs tailored to meet the inbound marketing and lead generation needs of B2B companies in selected niche markets. Participating companies underwrite Smart Decision Guides™ – compelling, comprehensive and unbiased content assets that help people make informed buying decisions – allowing them to raise brand awareness, educate target audiences, increase website traffic,...

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Starfleet Media
The Mom Project
Social Impact
Chicago
716 Employees
2 Benefits

The Mom Project is the career destination for moms. Through our platform and community, we connect professionally accomplished women with world-class companies. The Mom Project is changing the way women work and redefining career structures by providing women with opportunities that are in balance with their personal goals.

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The Mom Project
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Instagram
Social Media
21 Offices
18,000 Employees

Instagram is a video and photo-sharing social networking platform.

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Instagram
Rescar Companies
Transportation
4 Offices
308 Employees
2 Benefits

Rescar Companies is a privately held company that offers maintenance services to companies that own and/or lease rail rolling stock. Services include mechanical repair, exterior painting, interior coating and cleaning. These services are provided from Rescar's nationwide network of 50+ filed service locations in the US. Rescar has been providing these services to private shippers, leasing companies and railroads for over...

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Rescar Companies
Brain Balance
Healthtech • Kids + Family • Professional Services • Consulting
67 Offices
719 Employees

Brain Balance is a franchise-based organization that offers a non-medical, drug-free program for children and adults. Their approach integrates sensory-motor exercises, cognitive activities, and nutritional guidance to address root causes of learning, behavioral, and social challenges, aiming to improve focus, academic performance, and overall well-being.

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Brain Balance
Principal Financial Group
Fintech • Insurance
26 Offices
18,000 Employees
36 Benefits Hiring Now

Principal Financial Group provides retirement savings, investment, and insurance products and services worldwide.

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Principal Financial Group

Principal Financial Group's Top Stability & Growth Strengths

Profitability: Non‑GAAP operating EPS rose 11% in 2024 and accelerated at double‑digit rates in 2Q–3Q25, with segment margin expansion supporting earnings momentum.

Investor Backing & Capital Strength: Management raised dividends multiple times in 2025 and executed ongoing buybacks consistent with annual capital deployment guidance, indicating balance‑sheet flexibility and disciplined return of capital.

Strong Market Position & Advantage: The company is a leader in SMB/pooled retirement solutions, plan‑sponsor experience, and real‑estate investing while remaining a credible scaled competitor across broader retirement and asset‑management markets.

Ross Capital, LLC
Enterprise Web • Fintech
Chicago

I fund startup and early stage companies that have a mission and a passion to do what they do. I look for a team of people that understands the risks and strategically plans on how to rise above.

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Ross Capital, LLC
iDatam
Information Technology
2 Offices
15 Employees
US Based Dedicated Servers Hosting Company

iDatam provides dedicated server hosting with a 100% uptime guarantee for the network and immediate access. Its bare-metal technology expertise makes website hosting, application development, and server customization simple.

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iDatam

iDatam's Top Stability & Growth Strengths

Market Expansion: iDatam is scaling its global infrastructure and localized capacity across North America, Europe, Asia, Africa, and other regions, with an advertised 118 locations and a network described as increasing in capacity. Recent location-focused content and infrastructure announcements further indicate ongoing geographic build-out.

Future-Ready Strategy: Offerings align with demand for edge computing, AI processing, and compute-heavy workloads, including GPU servers, high-bandwidth connectivity, and enterprise-grade protections. This suggests positioning for emerging performance-sensitive use cases across a broad footprint.

Diversified Customer Base: The company is described as serving small businesses, mid-market firms, and large enterprises via DCaaS and HaaS models. This reach across segments indicates applicability to varied customer needs.

IFS - International Flight Support
43 Offices
18 Employees
28 Benefits

The future of aviation is all about innovation and digitization. Our mission is to make flight operations feel simple and we do so by removing any manual obstacles on the way and providing a customizable platform that seamlessly integrates all flight operation requirements in one place.

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IFS - International Flight Support
Cloudbakers
Big Data • Cloud • Information Technology • Professional Services
Chicago
93 Employees
5 Benefits
We bring the cloud down to earth.

Cloudbakers is a Google Cloud & Zoho Partner that has been helping organizations successfully migrate to cloud technologies for over a decade. Being one of only a few Google Cloud Premier Partners, their mix of 50% tech skills and 50% people skills means they bring together custom solutions and side-by-side support.

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Cloudbakers
Jump Capital
Angel or VC Firm
Chicago

Jump Capital is a Chicago-based venture capital firm specializing in expansion stage and growth capital investments. Led by a team of experienced operating executives, we are value creators who take an opportunistic, long-term approach to investing. Entrepreneurs can expect the advocacy and support of an angel investor, complemented with institutional-level resources.We seek investment opportunities ranging from $2mm to $15mm in...

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Jump Capital
ABC Supply
Information Technology • Professional Services • Retail • Renewable Energy
26 Offices
20,000 Employees
22 Benefits

ABC Supply is North America's largest wholesale distributor of roofing, siding, windows, and other exterior and interior building products for residential and commercial use.

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ABC Supply
UrbanStat, Inc.
Chicago
10 Employees
18 Benefits

UrbanStat is a real-time predictive analytics system that meshes catastrophic modeling with machine learning to keep insurers within their risk appetite while maximizing their profits. An early innovator in the industry which has multiple insurers as clients using our products & services in their core processes everyday.

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UrbanStat, Inc.

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