Systems Integration and API Development Services
Our systems integration work connects the ERP, CRM, legacy databases, and SaaS tools you already run, so data moves between them without anyone re-keying it. Senior engineers design the APIs, event flows, and data pipelines, and systems that still work stay in place.
Integration layer
APIs, events, and scheduled jobs
API GATEWAY
- ERP
- CRM
- Legacy database
- Saa
S apps
SYSTEMS YOU ALREADY RUN
What Is Systems Integration?
Systems integration connects separate software systems so they share data and trigger each other's work, instead of people copying information between screens. It covers APIs, event streams, scheduled data transfers, and the middleware that runs them.
Enterprise application integration is the same work at company scale. An order, a customer record, or an invoice is entered once and reaches every system that needs it.
Do we need an integration platform?
Not always. Many integrations run well on APIs, queues, and scheduled jobs you already have. A platform earns its cost when dozens of jobs need one place for scheduling, alerts, and monitoring. The assessment shows which fits.
SIGNS
Signs Your Systems Need Integration
Most integration problems show up as manual work, not error messages.
Staff re-key the same data
People copy orders or invoices from one system into another by hand, and the errors surface later in reports.
Spreadsheets carry data between systems
A person downloads, reformats, and uploads daily exports, and the process stops when that person is out.
A core system has no API
An older application, or a SaaS product on a lower tier, offers no way in except its screens or a nightly file.
An integration platform is expiring
A middleware contract is ending, and dozens of jobs depend on a platform nobody wants to renew.
Failures go unnoticed
Jobs run as scheduled tasks with no monitoring, so a broken feed is found by the person who needed the data.
One person knows how it works
The logic lives in one engineer's head or in undocumented scripts, and nobody else can change it safely.
OUR APPROACH
How We Connect Enterprise Systems
We connect what you already run and replace only what holds the business back. Senior US-based engineers lead our builds, with nearshore support available for ongoing work.
Replace everything at once
- A big-bang cutover
- Working logic rebuilt from scratch
- Point-to-point scripts everywhere
- No monitoring
Connect and build capabilities
Keep what works
If a system is stable and its business rules are right, we leave it alone and connect around it.
Capabilities, not one giant system
We build the ability to record an order or charge a payment as its own service, so other teams can connect to it without a meeting.
One front door for APIs
We put APIs behind a gateway where we can, so access, versions, and monitoring live in one place.
Built to be watched
Every integration gets logging, alerts, and retries, so a failed job raises an alert instead of leaving silent gaps.
INTEGRATION PATTERNS
Choosing an Integration Pattern
There are six common integration patterns, and most companies use several of them at once.
| PATTERN | HOW IT WORKS | WHEN IT FITS |
|---|---|---|
| API calls | One system asks another for data or an action through a documented API | A user or process needs an answer right away |
| Events and queues | A system publishes a change, and every system that needs it receives it | Several systems need the same update quickly |
| Scheduled batch | Data moves in files or bulk loads on a schedule, often nightly | The data can wait, and the job already runs reliably |
| Data pipeline | Data is extracted, checked, and loaded into a warehouse or another system | Reporting or analytics needs data from many sources |
| Integration platform | Middleware schedules, runs, and monitors many jobs in one place | Dozens of jobs need central scheduling and alerts |
| Screen automation | Software fills in forms or reads screens the way a person would | The system has no API and won't get one |
How we choose the pattern
We start from what each system can expose and how fast the business needs the data. An order a customer is waiting on needs an API call, while a nightly finance load that works can stay a batch job. We choose the simplest pattern that meets the need, because every moving part has to be monitored.
WHAT WE BUILD
Integrations We Build
Our integration work covers the connections between the systems that run your business.
ERP and line-of-business integration
Orders, inventory, and invoices moved between ERP and operational systems through APIs and pipelines, so each record is entered once.
CRM development and integration
Custom apps and connections built on and around CRM platforms such as Microsoft Dynamics 365. For a multi-location home improvement provider, JBS Dev built a Flutter contractor app integrated with Dynamics 365.
APIs for older systems
Modern APIs built in front of legacy applications, so new software can use them without a rewrite. For an environmental monitoring and compliance platform provider, engineers mapped an undocumented device protocol behind new REST and WebSockets APIs. See legacy application modernization.
Integration platform migrations
Jobs moved off expiring or unreliable middleware onto tools you control. For a top worldwide restaurant chain, JBS Dev migrated more than 100 integration jobs to SSIS, VisualCron, and .NET on Azure in 213 days.
Data pipelines between systems
Scheduled and event-driven pipelines that move data across systems and raise an alert when a load fails. See data engineering.
Connecting systems to AI
MCP connectors and APIs that let AI agents read from and act on your systems, within set permissions. See AI integration and MCP.
HOW IT WORKS
How an Integration Project Runs
An integration project runs in five steps, from mapping the systems to monitoring the connections in production.
STEP 1
System Map
We inventory the systems, the data each one owns, and how they connect today, spreadsheets included.
STEP 2
Integration Design
Senior engineers pick a pattern for each connection and decide which system is the source of truth for each record.
STEP 3
Build in Stages
We build one connection at a time, starting where manual work or risk is highest.
STEP 4
Parallel Run
New connections run alongside the old process until the data matches.
STEP 5
Monitor and Hand Off
We add logging, alerts, and runbooks, then hand over the integrations or keep supporting them.
Testing integrations before cutover
Integrations fail at the edges, on a missing field, a duplicate record, or a timeout. We test with real data volumes and compare old and new outputs before switching over. Our QA and software testing practice can also take on regression and performance testing for larger releases.
Data quality and reconciliation
When two systems disagree about the same customer or order, we decide with your team which one wins, and we log every record that doesn't match.
RESULTS
Integration Results
For a regional bank, JBS Dev built a daily pipeline that moves about 30,000 client records with no manual work, delivered in just under four months. For a top worldwide restaurant chain, JBS Dev migrated more than 100 integration jobs off an expiring workflow platform in 213 days.
30,000
Records a day, with no manual work
Financial Services
Automating 30,000 Daily Records for a Regional Bank
Challenge: Staff moved about 30,000 records a day from FIS DataConnection to ActiveCampaign by hand, after two to three years of failed automation attempts.
Result: An AWS Lambda and Python pipeline now runs the transfer daily with no manual work, delivered in just under four months.
Read the regional bank case study100+
Jobs moved to Azure in 213 days
Restaurants
Integration Platform Migration for a Top Worldwide Restaurant Chain
Challenge: A costly, unreliable proprietary workflow platform was nearing contract expiration.
Result: More than 100 jobs moved to VisualCron, SSIS, and .NET Azure APIs in 213 days, with estimated annual savings in the hundreds of thousands of dollars.
Read the restaurant chain case study"JBS feels more like an extension of our internal team than a traditional vendor relationship."
Senior IT Leader, AmeriVet Partners
TECHNOLOGY
Integration Technology and AI
We choose integration tools for the systems involved. The ones we use most often include REST APIs and API gateways, AWS Lambda, Amazon EventBridge and SQS, Azure Service Bus, SSIS, and Python data pipelines.
AI is one more system to connect. Calling a language model is a single API request, so an existing integration job can send a record to a model and act on the answer. Rules that must never break stay in APIs, outside the model.
SYSTEMS YOU RUN
ERP
API gateway
Legacy database
WHAT CONNECTS TO THEM
Events and scheduled jobs
Move data between systems
AI agents
Act through MCP, within set limits
COST AND TIMELINE
What Drives Integration Cost and Timeline
Integration cost and timeline depend mostly on how many systems connect and how open each one is. Six factors drive most estimates:
- 01Number of systems and connections
- 02APIs available on each system
- 03Data volume and how fast it must move
- 04Data quality and reconciliation
- 05Security and access rules
- 06Monitoring and support after launch
How the timeline is set
The assessment sets the timeline. Because we build one connection at a time, the first ones reach production early. As reference points, a regional bank's daily pipeline went from kickoff to running in just under four months, and a restaurant chain's integration jobs moved to Azure in 213 days.
How cost is set
We don't quote a number before we understand the systems. The assessment turns the factors above into an estimate for each connection. If an off-the-shelf connector would do the job, we'll tell you.
ENGAGEMENT MODELS
Ways to Work With Us
Each model stands alone or leads into the next. Compare all the ways to work with us.
Assessment & Strategy
For companies that need clarity before committing to a build.
Start here if you're not sure what to change first. We review the system component by component, weigh difficulty against business impact, and recommend a path for each part, including what to leave alone. You get a roadmap you can act on with us or on your own.
- Technical assessment
- Architecture review
- AI opportunity mapping
- Modernization roadmap
- Prioritized recommendations
Best when: You need to understand the opportunity, risk, architecture, or roadmap before investing in a larger build.
Projects
For companies ready to build or modernize a defined system.
For a defined scope, senior engineers lead delivery from architecture through release. We work in stages, write tests for core components, and ship through CI/CD. You own everything we build, plus knowledge transfer and documentation tailored to your team.
- Modernization projects
- Custom applications
- Cloud platforms
- Data systems
- Integrations
- AI agents
Best when: You have a clear business problem, workflow, or platform that needs to be built, modernized, or connected.
Teaming / Managed Delivery
For companies that need experienced delivery capacity.
When you need more than a single project, services we can provide include architectural guidance for your existing team, hands-on development, QA, and ongoing support. Senior US-based engineers lead our builds, and nearshore support is an option for ongoing work.
- Senior-led teams
- Embedded engineering
- Ongoing development
- Knowledge transfer
- Flexible support
Best when: You need reliable engineering capacity, technical leadership, or ongoing delivery support without adding unnecessary management overhead.
WHY JBS DEV
How to Choose an Integration Partner
Comparing IT integration services comes down to who designs the connections and who supports them afterward. Here are five questions to ask, and how we answer them.
- Will they replace systems that still work?
- Not if they work. Where a system is stable, we connect around it. For a pet retailer, JBS Dev replaced the point-of-sale and customer-facing systems and left e-commerce, product information, and couponing in place.
- Who designs the integrations?
- Senior engineers and technical leaders who can make architecture, integration, and security decisions directly. That means fewer handoffs, faster decisions, and the people you meet in the first call doing the work.
- What happens when a connection fails?
- Someone should hear about it right away. We build logging, alerts, and retries into every integration, plus runbooks. For a bulk liquids storage and logistics provider, JBS Dev set up monitoring in Datadog and incident alerts through PagerDuty.
- Who owns the integrations?
- You do. You own everything we build, including the code, the API definitions, and the documentation. There's no license fee to keep your own integrations running.
- Where is the team?
- Senior US-based engineers lead our builds, with nearshore support available for ongoing work.
JBS Dev is a senior-led custom software development company, founded in 1999, that builds, modernizes, and integrates enterprise systems around the technology clients already own.
FAQ
Systems & Enterprise Integration FAQs
What do systems integration services include?
They cover mapping your systems, designing how they connect, building the APIs, event flows, and data pipelines, testing with real data, and monitoring the connections in production. Ours connect ERP, CRM, legacy databases, and SaaS tools, and they include deciding which systems to leave alone.
What is the difference between an API integration and a data pipeline?
An API integration lets one system ask another for data or an action at the moment it's needed. A data pipeline moves larger sets of data on a schedule or as events, usually into a warehouse. Most companies need both, APIs for work a person is waiting on and pipelines for reporting.
How long does an integration project take?
It depends on how many systems connect and how open each one is, and the assessment sets the timeline. The first connections run in production early. For a regional bank, a daily pipeline moving about 30,000 records went from kickoff to running in just under four months.
How much does integration cost?
It depends on the number of systems and connections, the APIs each one offers, data volume and quality, security rules, and support after launch. The assessment turns those factors into an estimate for each connection, and we tell you when an off-the-shelf connector would do the job.
Can you integrate a system that has no API?
Yes, in most cases. We connect through its database, a file transfer, a new API built in front of it, or software that fills in its screens. For a real estate client whose MLS platforms had limited integration, JBS Dev built a Chrome extension that fills in the listings.
Do we need to replace our ERP to integrate it?
Usually not. Most ERP and CRM systems can be connected through their APIs, databases, or file exports, and the business rules inside them often still work. We recommend replacing a system only when it limits the business more than it costs to change.
How do you keep integrations from breaking?
We plan for failure. Every connection gets logging, alerts, and retries, and we test with real data volumes before cutover. Runbooks tell your team what to do when an alert fires, and application support and maintenance is available after launch.
Can AI agents work with our existing systems?
Yes. AI agents connect through the same APIs your other systems use, and we build Model Context Protocol (MCP) connectors where needed, even for older systems. Each agent gets only the permissions its job requires, and rules that must never break stay in APIs, not in the model. See AI Integration & MCP.
