Leave a Review For Providers 0 0
  • Post a Project
Home API Development United States Chicago

Top API Developers in Chicago

Ratings Updated: April 4, 2026
We verify reviews and evaluate companies so you can choose with confidence. We may earn a fee for some placements. Learn how Clutch ensures trust
Get Matched

6 Leaders 15 Contenders

3 Companies

Country: United States
State: Illinois
City: Chicago
API Type: RPC API

List of the Top Chicago API Development Services

  • Hristov Development Logotype

    5.0 11 reviews
    $5,000+
    $25 - $49 / hr
    10 - 49
    Chicago, IL

    Services provided

    10% API Development
    10% Application Management & Support
    10% Cloud Consulting & SI +7 services
    10% Custom Software Development
    10% E-Commerce Development
    10% IT Managed Services
    10% IT Staff Augmentation
    10% Mobile App Development
    10% UX/UI Design
    10% Web Development

    Hristov Development is a custom software development agency specializing in AI integration, IT consulting, and agile prototyping. Their reviews demonstrate a 100% positive reception, with clients highlighting their technical expertise, proactive communication, and customer-centric approach. Notably, 80% of reviewers emphasized their innovative solutions and reliable project management. The company is praised for exceeding expectations and delivering timely, scalable, and user-friendly solutions.

    See all 11 projects

    Reviews mention Great project management

    Clients consistently praised Hristov Development for their excellent project management, highlighting their clear communication and timely deliverables. One client noted that the team maintained regular updates and ensured alignment on goals, while another emphasized their agile methodology and adaptability to changing requirements. Both reviews underscored the company's commitment to meeting deadlines and providing proactive problem-solving, contributing significantly to project success.
    • Data Management Tool Dev for Business Development Company
      5.0 Dec 12, 2022

      Kristian and his team met all deliverables on time and without issue. Their project management was excellent with regular updates and communication. We had direct access to Kristian and his development team.

      Read Full Review
    • Custom Software Development for Career Management Platform
      5.0 Dec 14, 2024

      Hristov Development demonstrated exceptional project management skills throughout our collaboration. Their team maintained clear and transparent communication, provided regular updates, and ensured alignment on goals and deliverables. Their agile methodology allowed them to adapt seamlessly to changing requirements, while their structured approach with well-defined milestones ensured consistent progress and measurable outcomes.

      Read Full Review
    Read All Reviews

    Industry Experience

    Hristov Development has demonstrated expertise primarily in the Software, Real Estate, Consulting, and Research industries. Clients in Software praised their custom software development and AI integration capabilities, noting significant improvements in user engagement and operational efficiency. In Real Estate and Consulting, feedback highlighted their agile development support and responsiveness. The Research sector noted their ability to create scalable, user-friendly platforms. Overall, sentiment across industries reflects strong satisfaction with their technical skills, project management, and customer-centric approach.

    Read All Reviews

    Select Industry to see insights

    Software Real estate Consulting Research

    More responsive than most other service providers

    Hristov Development is very responsive

    They are a great candidate to start a conversation with. Send them a short message or project inquiry.
    Get in Touch

    View projects from:

    United States (6) Switzerland (1)
    View Profile
  • Adminix Logotype

    Not yet reviewed

    $1,000+
    $50 - $99 / hr
    2 - 9
    Chicago, IL

    Services provided

    25% API Development
    20% AI Development
    20% Enterprise App Modernization +3 services
    15% Custom Software Development
    10% DevOps Managed Services
    10% Low/No Code Development

    Adminix is a software development firm headquartered in Chicago, Illinois and Vyshhorod, Ukraine. Founded in 2022, the team offers Custom Software Development and API Development.

    Read more
    View Profile
  • Crispy Software Solutions Logotype

    4.8 2 reviews
    $5,000+
    $50 - $99 / hr
    2 - 9
    Dyer, IN

    Services provided

    25% API Development
    30% Custom Software Development
    15% Business Consulting +4 services
    10% Low/No Code Development
    10% Web Design
    5% Mobile App Development
    5% Web Development

    Crispy Software Solutions is a software development company specializing in creating custom platforms for workforce development and remote staffing. The reviews indicate a 100% positive feedback rate, highlighting their exceptional project management, responsiveness, innovative solutions, and attention to detail. Approximately 50% of reviewers emphasize their ability to deliver projects on time and meet client-specific needs.

    See all 2 projects

    Reviews mention Detail-oriented

    Clients consistently highlight Crispy Software Solutions' strong attention to detail and personal approach. One review specifically noted their 'very smooth' process with minimal bugs, underscoring the meticulousness of their work. The promptness in responses and timely delivery further exemplify their detail-oriented nature, contributing to a highly positive overall sentiment regarding their project management and execution.
    • Dashboard Dev for Virtual Receptionist & Staffing Company
      5.0 Aug 13, 2024

      Crispy Software Solutions had a very personal approach and strong attention to detail. The whole process was very smooth with little bugs. Delivery was smooth and on time.

      Read Full Review
    Read All Reviews

    Industry Experience

    Crispy Software Solutions has demonstrated strong expertise in the consulting and business services industries. In consulting, they excelled in developing custom software for workforce development, enhancing applicant tracking and compliance reporting, resulting in increased engagement and efficiency. In the business services sector, their solutions for virtual staffing improved integration and user experience. Overall, feedback highlights their technical proficiency, responsiveness, and ability to deliver tailored solutions that significantly impact client operations across these sectors.

    Read All Reviews

    Select Industry to see insights

    Consulting Business services

    Average Project Cost Breakdown

    Less than $10,000 (1) $50,000 to $199,999 (1)

    What Clients Have Said

    Clients have praised Crispy Software Solutions for their competitive pricing and overall value for money. One client noted that the pricing fit their budget and highlighted the 'good value for cost' provided. Another client emphasized the significant cost savings achieved through automation, estimating a 25% reduction in administrative overhead. Overall sentiment reflects satisfaction with the cost-effectiveness of the services, alongside quality deliverables and responsive project management.
    Read All Reviews

    View projects from:

    Canada (1) United States (1)
    View Profile

Tell us what you need — we’ll match you with top agencies in minutes.

Get My Matches
tracking image

Why Trust Clutch

At Clutch, we believe trust is the foundation of every business relationship. Our mission is to help buyers make confident, data-backed decisions informed by real client experiences.

Every review on Clutch undergoes a rigorous, human-led verification process to make sure it’s valid. Our team of specialists confirms the identity of each reviewer, ensures the project is legitimate, and only publishes reviews that meet our strict criteria.

Verification doesn’t stop at the point of publication. Our Trust & Safety team routinely audits older reviews against our guidelines. When reviews fall short of our standards, we remove them.

We evaluate service providers using a structured methodology that combines:

  • In-depth client interviews and ratings
  • Comprehensive project details
  • Market presence
  • Portfolio examples and industry recognition

This data powers tools like the Leaders Matrix, which helps you compare agencies directly. Our research team curates rankings by weighing verified reviews most heavily, so the most trusted and experienced providers rise to the top.

Using this unique combination of verified client feedback and provider-supplied insights, Clutch distills the most important details into clear, digestible summaries so you have everything you need to make confident, informed decisions quickly.

We take fraud seriously. Providers who violate our guidelines may face lower rankings, restricted visibility, or removal from the platform altogether.

Clutch’s commitment to transparency is ongoing. We’re constantly refining our systems to protect the integrity of reviews and support you in finding the right agency.

Ability to deliver
Focus
Clutch Leaders Matrix

Rollover to see company insights or click a company below for more details.

1 Hristov Development
2 LOGICON, LLC
3 StudioKrew
4 TwinCore
5 Profusion Systems
6 JAM-IT BPM Consultants

List of the Top 6 Chicago API Development Services

  1. Hristov Development Logotype

    Hristov Development

    $5,000+
    $25 - $49 / hr
    10 - 49
    Chicago, IL

    Ability to deliver

    32.5/40.0
    16.4/20 Reviews
    9.8/10 Clients & Experience
    6.3/10 Market Presence

    Service focus

    10% API Development
    90% Other
    View Profile Visit Website
  2. LOGICON, LLC Logotype

    LOGICON, LLC

    $25,000+
    $100 - $149 / hr
    10 - 49
    Oakbrook Terrace, IL

    Ability to deliver

    31.8/40.0
    16.6/20 Reviews
    10/10 Clients & Experience
    5.2/10 Market Presence

    Service focus

    15% API Development
    85% Other
    View Profile Visit Website
  3. StudioKrew Logotype

    StudioKrew

    $5,000+
    $25 - $49 / hr
    50 - 249
    Chicago, IL

    Ability to deliver

    28/40.0
    15.2/20 Reviews
    6.7/10 Clients & Experience
    6.2/10 Market Presence

    Service focus

    10% API Development
    90% Other
    View Profile Visit Website
  4. TwinCore Logotype

    TwinCore

    $25,000+
    $25 - $49 / hr
    10 - 49
    Chicago, IL

    Ability to deliver

    27.8/40.0
    16.6/20 Reviews
    6.3/10 Clients & Experience
    4.9/10 Market Presence

    Service focus

    10% API Development
    90% Other
    View Profile Visit Website
  5. Profusion Systems Logotype

    Profusion Systems

    $5,000+
    $25 - $49 / hr
    10 - 49
    Downers Grove, IL

    Ability to deliver

    21.9/40.0
    17/20 Reviews
    0/10 Clients & Experience
    4.9/10 Market Presence

    Service focus

    10% API Development
    90% Other
    View Profile Visit Website
  6. JAM-IT BPM Consultants Logotype

    JAM-IT BPM Consultants

    $50,000+
    $300+ / hr
    2 - 9
    Evanston, IL

    Ability to deliver

    21.5/40.0
    13.8/20 Reviews
    3.7/10 Clients & Experience
    4/10 Market Presence

    Service focus

    10% API Development
    90% Other
    View Profile Visit Website
  7. uFlow Decision Engine Logotype

    uFlow Decision Engine

    $5,000+
    Undisclosed
    10 - 49
    Chicago, IL

    Ability to deliver

    5.2/40.0
    0/20 Reviews
    0/10 Clients & Experience
    5.2/10 Market Presence

    Service focus

    20% API Development
    80% Other
    View Profile Visit Website
  8. Scalesology Logotype

    Scalesology

    Undisclosed
    $150 - $199 / hr
    10 - 49
    Chicago, IL

    Ability to deliver

    5.5/40.0
    0/20 Reviews
    0/10 Clients & Experience
    5.5/10 Market Presence

    Service focus

    15% API Development
    85% Other
    View Profile Visit Website
  9. Adtitude Digital Logotype

    Adtitude Digital

    $10,000+
    $25 - $49 / hr
    2 - 9
    Glenview, IL

    Ability to deliver

    4.6/40.0
    0/20 Reviews
    0/10 Clients & Experience
    4.6/10 Market Presence

    Service focus

    25% API Development
    75% Other
    View Profile Visit Website
  10. Pixelum Logotype

    Pixelum

    $25,000+
    $50 - $99 / hr
    10 - 49
    Chicago, IL

    Ability to deliver

    4/40.0
    0/20 Reviews
    0/10 Clients & Experience
    4/10 Market Presence

    Service focus

    20% API Development
    80% Other
    View Profile Visit Website
  11. Webkrafterz Logotype

    Webkrafterz

    $1,000+
    $25 - $49 / hr
    10 - 49
    Skokie, IL

    Ability to deliver

    4.6/40.0
    0/20 Reviews
    0/10 Clients & Experience
    4.6/10 Market Presence

    Service focus

    10% API Development
    90% Other
    View Profile Visit Website
  12. Kleinschmidt Inc. Logotype

    Kleinschmidt Inc.

    $1,000+
    Undisclosed
    50 - 249
    Deerfield, IL

    Ability to deliver

    21.5/40.0
    16.4/20 Reviews
    0/10 Clients & Experience
    5.2/10 Market Presence

    Service focus

    20% API Development
    80% Other
    View Profile Visit Website
  13. Chicago Web Logotype

    Chicago Web

    $5,000+
    $100 - $149 / hr
    2 - 9
    Chicago, IL

    Ability to deliver

    4/40.0
    0/20 Reviews
    0/10 Clients & Experience
    4/10 Market Presence

    Service focus

    10% API Development
    90% Other
    View Profile Visit Website
  14. Adminix Logotype

    Adminix

    $1,000+
    $50 - $99 / hr
    2 - 9
    Chicago, IL

    Ability to deliver

    4.9/40.0
    0/20 Reviews
    0/10 Clients & Experience
    4.9/10 Market Presence

    Service focus

    25% API Development
    75% Other
    View Profile Visit Website
  15. Basis Technologies Logotype

    Basis Technologies

    Undisclosed
    Undisclosed
    250 - 999
    Chicago, IL

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    10% API Development
    90% Other
    View Profile Visit Website
  16. Kokomo24/7® Logotype

    Kokomo24/7®

    Undisclosed
    $200 - $300 / hr
    50 - 249
    Northbrook, IL

    Ability to deliver

    5.5/40.0
    0/20 Reviews
    0/10 Clients & Experience
    5.5/10 Market Presence

    Service focus

    10% API Development
    90% Other
    View Profile Visit Website
  17. Crispy Software Solutions Logotype

    Crispy Software Solutions

    $5,000+
    $50 - $99 / hr
    2 - 9
    Dyer, IN

    Ability to deliver

    22.9/40.0
    15.8/20 Reviews
    1.4/10 Clients & Experience
    5.6/10 Market Presence

    Service focus

    25% API Development
    75% Other
    View Profile Visit Website
  18. Policy Claim Management International (PCMI) Logotype

    Policy Claim Management International (PCMI)

    Undisclosed
    Undisclosed
    50 - 249
    Park Ridge, IL

    Ability to deliver

    0/40.0
    0/20 Reviews
    0/10 Clients & Experience
    0/10 Market Presence

    Service focus

    10% API Development
    90% Other
    View Profile Visit Website
  19. Placematic USA LLC Logotype

    Placematic USA LLC

    Undisclosed
    $25 - $49 / hr
    2 - 9
    Rolling Meadows, IL

    Ability to deliver

    4.6/40.0
    0/20 Reviews
    0/10 Clients & Experience
    4.6/10 Market Presence

    Service focus

    20% API Development
    80% Other
    View Profile Visit Website
  20. Hawkdive Media Logotype

    Hawkdive Media

    Undisclosed
    $50 - $99 / hr
    2 - 9
    Naperville, IL

    Ability to deliver

    4.9/40.0
    0/20 Reviews
    0/10 Clients & Experience
    4.9/10 Market Presence

    Service focus

    30% API Development
    70% Other
    View Profile Visit Website
  21. AptlyLabs Inc Logotype

    AptlyLabs Inc

    $10,000+
    $25 - $49 / hr
    10 - 49
    South Barrington, IL

    Ability to deliver

    4.9/40.0
    0/20 Reviews
    0/10 Clients & Experience
    4.9/10 Market Presence

    Service focus

    20% API Development
    80% Other
    View Profile Visit Website

Get personalized agency matches based on your project goals.