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Best Illinois Engineering Design Firms

2 Companies - Rankings updated: September 03, 2026

All agencies are evaluated on DesignRush for demonstrated expertise and authentic client reviews to support your decision. Certain placements are paid.

Engineering Design
Construction
Budget
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United States × Illinois × Engineering Design × Construction × Clear Filters

  • LLT Group

    Award Winning Design + Development Agency

    We’re a digital, branding, and marketing agency that creates authentic partnerships by elevating the human experience. Every story we craft, every experience we build, every campaign we deploy, every relationship made - we make sure it is set up for success...

    Top Services:

    • Web Design
    • Web Development
    • eCommerce Development
    • SEO
    • Graphic Design
    • Show more
    Location
    Naperville, Illinois
    Number of Employees
    Under 49
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $25,000 - $50,000

    LLT Group Services

    • Web Design
    • Web Development
    • eCommerce Development
    • SEO
    • Graphic Design
    • Branding
    • Design Services
    • Logo Design
    • WordPress Website Design
    • UI/UX Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • IT Industry
    • Small Business Industry
    • Commercial Industry
    Data sourced from the agency's DesignRush profile

    LLT Group Reviews & Testimonials

    • Kennan Davison
      Kennan Davison CEO, Founder at Icon
      5.0 ★

      Web Design Review from Kennan Davison

      Thanks to LLT Group efforts, we saw a 300% increase in web traffic and improvement on our conversion rate. The team ensured a seamless customer experience by delivering high-quality and timely outputs that exceeded our expectations. They were also talented, professional, and collaborative.

    • Dustin Bohannan
      Dustin Bohannan Business Development Manager at SCOTHE
      5.0 ★

      Web Design Review from Dustin Bohannan

      LLT Group was tasked with redesigning the full website to improve the user journey and elevate the brand aesthetic. they worked on penetration testing reporting company's website. We provided the copy and gave examples of web pages we like. We asked for all custom illustrations. We also needed some help with web development. The team delivered work on time and was responsive via email and virtual meetings, exhibiting excellent project management.

    • Brendan Murphy
      Brendan Murphy CEO at Access Telehealth
      5.0 ★

      Web Design Review from Brendan Murphy

      Llt group designed and developed a website for a recruitment firm. The team was responsible for web design, UI/UX design, frontend development, and backend development. they were communicative and open to feedback throughout the project, fixing errors and making design changes as needed. Still, the project was delayed a couple of weeks, as Llt' team was a bit slow at implementing those changes. The dedication to their work was outstanding.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    4.9 4.9 (27)
    4.5 4.5 (54)

  • Design In DC

    Verified Verified by the DesignRush team for authenticity and credibility.

    A Digital Agency For The Future

    We create fully customized, scalable, easy-to-manage websites and apps with a creative twist. Everything we build for you at Design in DC is made with the future in mind. We are a full-service creative agency with a global and local mindset...

    Top Services:

    • Web Development
    • Web Design
    • UI/UX Design
    • Video Production
    • Logo Design
    • Show more
    Location
    Chicago, Illinois
    Number of Employees
    50 - 99
    Average Hourly Rate
    $160/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    11 Projects Listed

    Design In DC Services

    • Web Development
    • Web Design
    • UI/UX Design
    • Video Production
    • Logo Design
    • Graphic Design
    • Digital Marketing
    • Digital Services
    • Advertising
    • Product Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Consumer Bankers Association
    • Examit
    • Summit Ridge Energy
    • JFL Consulting
    • Lateenz
    • Solar Landscape
    • Warfel Construction
    • CiviClick
    • Priovant Therapeutics
    • Hilton
    Data sourced from the agency's DesignRush profile

    Design In DC Reviews & Testimonials

    • Mackenzie Shriner
      Mackenzie Shriner Owner at Distinctive Deck Designs
      4.8 ★

      Web Design Review from Mackenzie Shriner

      I contracted design in DC to build me a custom website. they were accommodating of my budget, very responsive, and gave good insight on layout, content and design. the process was very straightforward and the final product is great!

    • Jo Maney
      Jo Maney Principal at BGR Group
      5.0 ★

      Web Design Review from Jo Maney

      DDC has been an excellent partner since we engaged with them in 2023. The DDC team worked with us to completely redesign our website and work to provide ongoing digital marketing services. The DDC team has been responsive, proactive, and thorough with their work. They are also very transparent about how they operate and how much time special projects will require. We have referred DDC to several clients and partners thanks to their outstanding process and product. DDC is a very professional, creative, and well-organized team.

    • Sapna Doshi, Ph.D.
      Sapna Doshi, Ph.D. Owner at Mind Body Health LLC
      5.0 ★

      Web Design Review from Sapna Doshi, Ph.D.

      My experience working with Design in DC was incredible. Everyone was friendly, approachable, and seemed to genuinely care about helping create the best possible website for my business. They were also invested in making sure the process was one in which I enjoyed and felt taken care of. The regular meetings made me feel like I was a priority and that progress was continually being made. I so appreciated the attention to detail in regards to the user experience. The collaboration in understanding my wishes and desires for the website and user experience was met with patience and paying attention to detail on my behalf. Not only were they taking my suggestions but offering their own to help me maximize the potential of my website. The design and functionality is more than what I could have imagined. I know, undoubtedly, that the work that Design in DC did for me will help my business grow. After wasting money in years past on website designers, I was worried I'd be doing hte same here. I was wrong. I don't think I'll ever need to search for another website designer group again. I would recommend this group to anyone I know. Thank you, Design in DC! It was an absolute pleasure working with all of you!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    4.8 4.8 (10)
    5.0 5.0 (47)

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