VARTEQ

Transform with Various Technologies

API integration services

Our API integration services connect the software, partner systems and operational tools your business runs on. Data and tasks move through one shared workflow instead of being re-entered between tools.

AI CODING TOOLS WE USE

  • Claude
  • GitHub Copilot
  • Cursor
  • OpenAI
  • Gemini
  • Windsurf

See our work

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ISO/IEC 27001 certified

Integration services

  • Custom API integration

    APIs built for your systems and partners, documented so other teams can use them without a new integration each time.

  • Software integration

    CRM, messaging and phone services connected through their existing APIs and working as one workflow, such as HubSpot, ClickSend and RingCentral.

  • System integration

    Store, warehouse and carrier systems kept in sync in real time, such as Shopify, Magento, UPS and ShipStation.

  • Third-party and legacy system connectors

    Connections between existing financial or legacy systems and new software, with validation before data moves on.

OUR WORK

API integration in practice

All case studies

RESULTS FROM SELECTED VARTEQ PROJECTS

What the work changed

WAYS TO WORK TOGETHER

API integration, at the level of involvement you choose

Hand over a few seats, a whole team, or the entire project. Each option sets out what you lead and what we take on.

  1. WE ADD ENGINEERS

    Staff augmentation

    Our engineers join your in-house team and work inside your process.

    YOU LEAD
    Roadmap, process, and day-to-day management
    WE TAKE ON
    Engineers with the skills your team is missing
    How it works
  2. WE RUN THE TEAM

    Dedicated team

    A stable VARTEQ team that works on your roadmap long term and grows or shrinks as plans change.

    YOU LEAD
    Product priorities and the roadmap
    WE TAKE ON
    Running the team and its delivery
    How it works
  3. WE OWN THE DELIVERY

    End-to-end project

    We take the project from scope to release and support, with milestones agreed up front.

    YOU LEAD
    Goals, scope, and sign-off at each milestone
    WE TAKE ON
    Architecture, build, testing, release, and support
    How it works
  • Claude
  • GitHub Copilot
  • Cursor
  • OpenAI
  • Gemini
  • Windsurf

  1. AI ASSISTS

    Drafting, testing, and reviewing code

  2. ENGINEERS DECIDE

    Architecture, security, and every merge

  3. YOU GET

    Releases our engineers are accountable for

AI FOR BUSINESS

Our engineers use AI and take responsibility for the results

We use AI tools to help write, test, and review code, while our engineers make the decisions and remain accountable for your project's architecture, security, and every release.

WHY VARTEQ

Built for the long run

Companies keep building with VARTEQ year after year. Some of our client relationships have lasted more than a decade.

Clients served
100+
Founded in Chicago
2014
ISO/IEC 27001 certified information security management system
Certified information security management.

FAQ

FAQs

Short answers to what clients usually ask before a first call.

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Ask us directly. A partner will reply to set up a first call.

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Which systems have you integrated?

Projects have connected HubSpot, ClickSend, RingCentral, Shopify, Magento, UPS, USPS, Endicia, ShipStation, Affise and Microsoft Azure services, along with clients' own financial and internal systems.

Can you connect a legacy system that has no ready-made API?

Often, yes. We first check what the system offers, such as database access, file exports, documentation and vendor limits. Then we agree whether a custom connector is feasible and how data is validated before it moves on.

How do you test integrations and handle failed data transfers?

We test each connection against real data formats and the failure cases agreed with you. Monitoring, retries and failure handling are planned as part of the integration. On NORTH, for example, each partner is processed separately, so one unavailable system doesn't block the others.

Can your engineers work alongside our engineering team?

Yes. Our engineers can join your in-house team and work inside your process, or a dedicated VARTEQ team can take on part of your roadmap. We can also own delivery end to end for an agreed scope.

What determines integration cost and timeline?

The number of systems, the state of their interfaces and documentation, data volumes and your security requirements. We assess these first and confirm the terms before work starts.

Who maintains the integration after launch?

We agree that in the scope: documentation and a handover to your team, ongoing maintenance by VARTEQ, or a mix of both.

SERVICES

Other services

All services

  • TRANSFORM

    Data engineering

    Data pipelines, analytics and business intelligence.

    Learn more

  • TRANSFORM

    Application modernization

    Upgrade the software you already run, in stages.

    Learn more

  • BUILD

    Application development

    Mobile, web and enterprise applications with the backend they need.

    Learn more

  • BUILD

    Software testing and QA automation

    Software QA, regression testing and test automation.

    Learn more

INSIGHTS

Recent thinking from our engineers

All insights

ARTICLE · MODERNIZATION

Legacy Modernization for 2026: Strategic System Upgrades That Matter

Why legacy systems became urgent in 2025, the most common modernization mistakes, four modernization paths for 2026, and a step-by-step playbook for CTOs.

Read article

GET STARTED

Let's talk about your project

Tell us which systems need to connect, what the connection should do and what is getting in the way. A VARTEQ partner will reply to arrange a first call.

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