Transform with Various Technologies
API Integration Services
VARTEQ API integration services connect the systems your business runs on: software integration services, system integration services, and custom API integration services.
Related work
AI coding tools we use
What we build
Integration Services.
- 01
Custom API Integration
APIs built for your systems and partners, documented so other teams can use them without a new integration each time.
See it in a project: Affiliate network platform - 02
Software Integration
CRM, messaging, and phone services working as one workflow, such as HubSpot, ClickSend, and RingCentral.
See it in a project: Sales automation system - 03
System Integration
Store, warehouse, and carrier systems kept in sync in real time, such as Shopify, Magento, UPS, and ShipStation.
See it in a project: Warehouse management system - 04
Third-party and Legacy System Connectors
Connections between existing financial or legacy systems and new software, with validation before data moves on.
See it in a project: Tax reporting automation
Results from these projects
What the work changed.
AI assists
Drafting, testing, and reviewing code
Engineers decide
Architecture, security, and every merge
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.
Our work
Related Case Studies.
FinTech
10+
Repositories migrated to GitHub Actions
NORTH Merchant & Partner Platform Case Study
Modernizing a serverless merchant and partner platform on AWS while continuing to ship business-critical features.
Read case studyLogistics
35%less
Fulfillment time
Connecting Warehouse Inventory, Orders, and Shipping
A US ecommerce fulfillment company needed to manage inventory across stores and coordinate orders with several shipping providers. Staff were moving between Shopify, Magento, and carrier tools, then printing labels manually. VARTEQ implemented a warehouse management system (WMS) that connected inventory, orders, and shipping in one place, reducing handling work and operating costs.
Read case studyManufacturing
60%less
Lead engagement time
Turning Permit Records into Timely Sales Outreach
A US kitchen manufacturer used permit activity to find sales opportunities, but manual searches and scattered contact records delayed outreach. VARTEQ built a system that monitors permits, sends records to HubSpot, and triggers SMS, email, and phone follow-up. Lead engagement time fell by 60%, and the number of qualified leads grew by 25%.
Read case studyMarketing Technology
300%more
Traffic capacity
A CPA Network Handles Four Times the Traffic
A CPA affiliate network was processing more traffic than its existing infrastructure could reliably handle. Routing delays, slow payouts, and difficult partner integrations affected daily work. The team also lacked live media buying tools, leaving revenue opportunities unaddressed. VARTEQ developed a service for high traffic volumes and tools for affiliate operations, improving routing, payouts, and coordination with partners.
Read case studyIT Services
20%less
Accounting work time
Automating Recurring Tax Reports for an IT Services Provider
A US IT services provider was spending accounting time preparing tax reports for different locations and jurisdictions. VARTEQ connected the company’s financial systems to an automated reporting and filing workflow through RESTful APIs. Manual workload fell by 20%, with fewer submission delays and more accurate IRS and sales tax filings.
Read case study
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. The bar shows how much of the work we take on.
- VARTEQ takes on 1 of 3 parts of the work
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
- VARTEQ takes on 2 of 3 parts of the work
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
- VARTEQ takes on 3 of 3 parts of the work
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
Why VARTEQ
Built for the Long Run.
Companies keep building with VARTEQ year after year. Our longest client relationship has lasted more than a decade.
- Clients served
- 200+
- Building custom software
- 12 years

- Certified information security management.
FAQ
API Integration FAQ.
Short answers to what clients usually ask before a first call.
Have a question that isn't here?
Ask us directly. A partner will reply to set up a first call.
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 work with our existing systems?
Yes. Much of our work is modernizing legacy platforms and integrating new software with the systems a business already runs, without stopping day-to-day operations.
What engagement models do you offer?
End-to-end projects, dedicated development teams, and staff augmentation, where our engineers join your in-house team and work inside your process.
Who owns the code and intellectual property?
You do. The code, documentation, and intellectual property we create for you are transferred to you under the contract.
How do you handle security and compliance?
VARTEQ is ISO/IEC 27001 certified, and our delivery follows HIPAA requirements on healthcare projects. Access control, code review, and dependency checks are part of every release.
Can we meet the engineers before signing?
Yes. Before any contract, you meet the engineers who would work on your project and can talk with them about your system and approach.
Services
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