Our industry experts identified the leading software development companies in Illinois that build high-performance solutions. Explore the best developers in the table below and use the filter to choose the best fir for your budget and needs.
Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.
Simform is a premier digital engineering company specializing in Product Engineering, Cloud, Data, Agentic AI, and Enterprise Platform Innovation. We help enterprises and high-growth ISVs build digital experiences and scalable, enterprise-grade products what work at scale...
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Software Development Review from Andrew Muroff
We worked with Simform for many years ongoing software development on our core product, the Strainprint mobile outcomes tracker for medical cannabis patients. We have only positive things to say about their work product and attention to detail. We highly recommend them and will work with them again.
Software Development Review from Robel Yemane
I've been working with Simform for over six months now. The engagement began with bringing our subscription management platform in-house, and we've since expanded the partnership to other projects due to their broad skill set and consistent reliability. They've gone the extra mileeven over weekends and public holidaysto help us move faster when needed. Communication and project management have been excellent, with any issues swiftly addressed. It genuinely felt like Simform was invested in our success. Having worked with similar firms throughout my career, I can confidently say Simform stands out and comes highly recommended.
Software Development Review from Russ Makhauri
We worked with Simform to hire a front-end engineer for our SaaS platform. The process was well-organized, and their team was professional, responsive, and efficient. They quickly identified a candidate who met our technical requirements and ensured a smooth onboarding process.Simforms communication and project management were strong throughout the engagement. They were proactive in addressing feedback and remained flexible in adapting to our needs. While there is some room for improvement in developer vetting and quality assurance, their overall service was excellent.For companies looking to scale their development teams efficiently, Simform is a reliable partner. Their structured approach, responsiveness, and commitment to client satisfaction make them a great choice. We would recommend them without hesitation.
Rubyroid Labs is a software development company specializing in Ruby on Rails, React Native and UX/UI Design. since 2013. We architect end-to-end services for both large enterprises (Mastercard, Volvo, Toyota) and leading startups from Y Combinator and Seedcamp...
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Ruby on Rails Review from Michael Peter Craies
Rubyroid Labs joined our team at a time when we were starved for Ruby on Rails devs. After a very short while, the assigned team members were taking on more and more complex code and helped bolster our development outputs. Before they joined us, our average bug response time was over 2 weeks, a value that they have helped us reduce to under 8 days, with urgent tickets being resolved within a few hours. There teams' response times regarding staff movements (e.g. replacing one of our assigned devs) as well as our queries are impressive. I would definitely recommend them to any company looking to outsource their development needs.
Software Development Review from Anonymous
Rubyroid Labs conducted a code audit for our legaltech workflow automation platform. They identified several critical areas for improvement and provided actionable recommendations. Our internal development team has implemented their suggestions, which has led to measurable improvements in platform quality.
Software Development Review from Anonymous
Rubyroid Labs provided excellent Ruby on Rails, React, and React Native resources for our data-driven application. The team successfully implemented features for real-time statistics, logistics management, and advanced data filtering. They delivered everything we requested, and the team was highly motivated, engaged, and genuinely interested in our product's success. Daily communication was smooth and effective.
Atomic Object is a top-rated custom software design and development consultancy. Our co-located, U.S.-based team works with executives to improve their bottom line by delivering new products, enhancing existing products, modernizing legacy products, and integrating AI into their software systems...
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Consumer IoT Review from Mason Ferlic
GripFusion is a sports technology startup developing Tactile Intelligence. Our flagship product, the ForceBall, is the first grip-sensing baseball. We approached Atomic Object with the challenge to build a React Native iPad app to connect with the embedded electronics over BLE and visualize sensor data in real time. Atomic stepped up to the plate and hit a home run! They took early R&D code and we're able to successfully navigate IoT challenges, large amounts of sensor data, and seamless UX. The developer team worked closely with our technical staff to incorporate evolving firmware and hardware improvements. The design team did hundreds of hours of user discovery and product feedback to ensure we deliver a cutting-edge experience. Overall, Atomic has the breadth and depth to tackle complex hardware-software systems.
Daniel Schoonmaker's Review Sourced from Google
Atomic Object is one of the best companies across the board in Michigan. Fantastic maker of custom-software solution and a model of organizational thought leadership. I've been working with the company in some capacity for nearly 20 years and learn something new in every interaction I've ever had.More than that, they are a value-centered organization that you will be proud to partner with. They've built this company the right way. An impactful community leader and employer of choice.
Rik Cordero's Review Sourced from Google
As a freelance Video Producer, I recently wrapped up another fun project with the folks over at Atomic Object, and I've gotta say, it was an experience worth mentioning. Collaborating with their marketing team on a series of authentic and engaging customer-facing and internal videos was nothing short of fantastic. Their seamless planning and logistics during pre-production, coupled with easy going personalities during production, made the process a breeze. Post-production brought our collective vision to life with meticulous story editing and videos that reflect their unique culture and values. Their team's dedication to kindness, empathy, and diversity made this collaboration not just successful, but truly enjoyable.
Star Knowledge is a globally recognized bespoke software development company with 10 years of experience across mobile, performance testing, web and cloud technologies, and manage IT services, We're a Microsoft Gold Partner widely preferred for complex to simple cloud computing & cloud migration services...
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Our team of expert software engineers leads our clients through the product development process, laying out clear expectations and goals to hasten the product's time to market...
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Clique is an award-winning team of digital strategists, designers, and engineers. We help companies define and express their brand through engaging websites that position them to stand out amongst the competition. From startups to fortune 500s, our work turns heads and grows businesses...
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Ali Washington's Review Sourced from Google
My husband and I own a start up and have worked with Aly, Justin, and Austin at Clique for a complete rebranding and website redesign and are now working with Jeff for continuous marketing and managing our ad spend. I can’t say enough good things about this team and this company. They are creative, innovative, dedicated, and they CARE. They treat our business as their own, asking thoughtful questions and guiding us through our growth. Our new site visits have conversion rates have skyrocketed, doing daily numbers that our old site and unstructured marketing did in months. I can’t say thank you enough to this team.
Amber Fochi's Review Sourced from Google
Great to work with. Delivered what we needed even though the solution was outside of the box. Creative thinkers. Went above and beyond... Plus genuinely thoughtful and fun people.
Jean Cannon's Review Sourced from Google
I was referred to David by a good friend and I'm glad I chose to go with work with him. He is very professional and hard working and will get the job done to your satisfaction. He's very attentive and will do whatever it takes to get the job done in a timely and professional matter.Will come back again!Thanks David !
TwinCore - is a full-cycle software development company...
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Tazriel is a global outsourcing partner providing affordable remote service expertise for Software Development, Microsoft Power Platform automation, Mendix app Builds, Cvent event technology support, IT Administration and AI Training. With 24/7 support and cost savings of upto 70%, we help businesses...
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Cepoch is a North American AI and software services firm with over 20 years of experience, delivering intelligent solutions and building lasting partnerships across 300+ projects and 100+ clients...
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Stephanie Velasco's Review Sourced from Google
We've had a great experience working with Cepoch. Their team is responsive, professional and genuinely focused on helping our business operate more efficiently. They took the time to understand our needs, streamlined our lead response process and made communication more organized. We've noticed great improvement in our workflow and appreciate how proactive they are in providing support. I highly recommend Cepoch.
Derek's Review Sourced from Google
Flamingo Bahamas is an outstanding platform that truly highlights the best of what local businesses have to offer. It’s user-friendly, well-organized, and makes discovering deals and services across the island incredibly easy. What stands out most is how it connects customers directly with businesses, giving both sides real value—customers save money while businesses gain visibility.
Derek Stuart's Review Sourced from Google
I’ve had an amazing experience with Flamingo Bahamas! The platform makes it incredibly easy to discover great deals from local businesses all in one place. It’s user-friendly, convenient, and actually helps you save money while supporting Bahamian businesses at the same time.
Since 2009, Dom & Tom has built their reputation on designing and developing applications meant to build and scale digital businesses. From startups to enterprise clients, the apps we craft for our clients help them to be more profitable, efficient, and competitive in their markets...
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At LN Solutions , our mission is simple: to empower businesses with the tools and strategies they need to succeed online. Whether it's creating stunning websites, implementing effective digital marketing campaigns, or developing custom software solutions, we are here to help our clients achieve their goals...
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Bob patel's Review Sourced from Google
Great digital marketing service for my hotel and liquor store.had a wonderful experience with the whole team.highly recommended for social media marketing
The Office of Experience (OX) is a Chicago-based digital agency helping ambitious B2B companies outperform their peers. At the intersection of customer experience, marketing, and technology, OX unites strategy, design, and engineering to transform how companies connect with customers. Capabilities span B2B...
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Michelle t's Review Sourced from Google
If you are looking for an amazing digital team, these are your people! True professionals and a blast to work with!
Ashley Freeland's Review Sourced from Google
Such an awesome time. They did a great job with the details. Take your time going through so you don't miss something.
Pennine Technolabs is a fast-growing web and app development company serving in USA and worldwide. We build modern digital solutions to help businesses succeed. With a commitment to excellence, our expert developers and designers use the latest technologies to deliver user-focused results...
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Jenny Thomas's Review Sourced from Google
Working with them on our eCommerce project felt easy from the start. They understood what we needed and delivered without any hassle. Loved the final result
Ariana Richards's Review Sourced from Google
A very positive experience overall. They listened to our ideas and turned them into a clean and modern website without any hassle
Jordan Xavier's Review Sourced from Google
I had a good experience with Pennine Technolabs for my website design and development. Their team was professional, responsive, and understood my requirements well. The project timeline was o time, and the final website was as per what i wanted, very satisfied, recommended to others.
Sketch delivers AI-enabled custom software and DevOps via a subscription model with two-week delivery cycles, citing zero missed deadlines. Its team serves Fortune 500 clients and is best suited for product teams needing a transparent, agile dev partner without long-term contracts...
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Monica's Review Sourced from Google
Amazing and talented people. I’ve worked for both client and agency side and can can say their partnership is amazing. They truly care about ongoing operations and not just ending it at a project level. Highly recommend! Message me if you want specifics.
John Andesilich's Review Sourced from Google
I own a marketing firm in Troy MO and I recently met with Calvin at Sketch Development Services to discuss a software development project I have been thinking about pursuing. He was very nice, easy to speak to and even though his field is a bit out of my knowledge base, he was able to explain things in a way that made perfect sense. I look forward to working with him and his team in the future and recommend anyone looking for a software or app development company to give them a try.
Talentica offers product engineering, with a playbook-driven approach refined across more than 200 products over 22 years. Its 200+ GenAI-certified developers deployed AI features in 60% of products. Recommended for startups and SaaS companies needing MVP development, AI integration, or product scaling...
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Software Development Review from Ashish Sharma
Talentica has proven to be an exceptional software outsourcing partner, consistently exceeding expectations in both the quality of their resources, deliverables and their commitment to our success. They function not merely as a vendor, but as an extension of our core engineering team.Key Highlights of our Partnership:High Resource Quality: The engineers provided by Talentica are technically strong and highly competent. They integrate seamlessly with our internal teams and quickly take ownership of complex projects.Commitment and Reliability: Talentica is a truly reliable partner that consistently demonstrates a strong willingness to go beyond the standard scope of work. They proactively identify risks and contribute innovative solutions.Critical Project Support: Their expertise was pivotal in two critical areas:Data Pipeline & Reporting: They were instrumental in both enhancing and maintaining a reliable data pipeline & reporting infrastructure. Software Upgrades: They managed challenging, large-scale software upgrades, ensuring we successfully transitioned to modern technology stacks with minimal disruption.Overall, Talentica is a dependable and high-value partner assisting our mission-critical projects.
Software Development Review from Anonymous
We had created a conceptual framework to authenticate and verify the provenance, transaction history, and authorship of blockchain-based NFTs. Talentica was brought on board to test and refine the concept from both functional and engineering perspectives, and later to build a Minimum Viable Product (MVP) aligned with the agreed specifications and constraints.
Software Development Review from Anonymous
For several years, the team was composed entirely of Talentica contractors. Since January 2022, I have been directly managing them. The Talentica team handled the admin tooling backend, which included multiple Python Flask services with Postgres and Elasticsearch. These services operated in a service-oriented architecture deployed on Kubernetes, using Istio for service mesh and Spinnaker for deployments.
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