API Integration Services
Leverage Bacancy's API integration services to connect your applications, databases, and enterprise systems through integration layers built to last. Whether you need a single third party connection or a full enterprise integration, we take care of authentication, data mapping, error handling, and testing so that your systems communicate accurately from day one.
250+ Projects Delivered
14+ Years of Experience
1050+ Expert Engineers
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API Integration Services We Offer
As an experienced API integration company, we cover every layer of your integration needs. From building new APIs from scratch to securing existing ones and managing the full lifecycle, our engineers take full ownership of the work and focus on what your business actually needs.
Custom API Development
We offer custom API development and integration services to build APIs around your business logic. We design REST, GraphQL, SOAP, and gRPC endpoints with OpenAPI, proper testing, documentation, versioning, and load checks so your APIs handle real traffic at production scale.
Third Party API Integration
Connect Stripe, Salesforce, NetSuite, Shopify, Twilio, and over 200 others to your technology stack. Hire API developers from us who can take care of OAuth flow, webhook consistency, idempotency key generation, retry policies, and rate limiting, so the integration survives real-world API changes.
API Management Services
We set up and manage your API gateways, so you stay in control of how your APIs are used. This includes access control, rate limiting, traffic monitoring, and caching. You get a single dashboard to track usage, errors, and performance across all endpoints.
API Security Services
As a reliable API integration company, we deploy layer-based security for OAuth 2.0, JWT authentication, API keys, mutual TLS, and IP Whitelist. Each engagement includes an OWASP API Security Top 10 audit, penetration testing, and remediation to discover any vulnerabilities that could potentially cause harm.
API Lifecycle Management
At Bacancy, we help you keep your APIs stable across environments. We use OpenAPI and AsyncAPI with clear versioning and deprecation plans, and CI/CD pipelines that run contract tests on every commit to catch breaking changes early.
API Consulting Services
Our consultants review your existing API setup, identify where things are breaking down, and recommend the right approach. Whether you are starting fresh or working through years of technical debt, we give you a clear, practical path forward based on what your systems actually need.
API Testing Services
Our QA engineers perform functional, performance, security, and reliability tests on all endpoints. We use Postman, JMeter, and CI/CD pipelines to ensure that your APIs are functioning as expected in actual traffic conditions before they go live.
API Maintenance and Support
Once your integration is live, we keep it running. We monitor performance, handle third party API deprecations, apply security patches, manage version updates, and resolve incidents before they reach your users.
Industries We Serve
As a dedicated API integration company, we work across industries where data flow, system connectivity, and integration reliability directly impact business outcomes. Whatever your sector, we bring the technical depth and domain understanding to get it right.
Healthcare systems deal with sensitive data spread across multiple platforms, and disconnected systems can slow down care delivery and create compliance risks. We help healthcare organisations connect their systems securely and efficiently.
Here is How We Help You:
- EHR and patient portal integration using HL7 FHIR standards
- HIPAA compliant data exchange with end to end encryption
- Telehealth and remote monitoring platform connectivity
- Billing and claims automation across payers and providers
- Role based access controls and full audit trail management
- Epic, Cerner, and third party system integration
Fintech platforms need fast, secure, and compliant connections to banking data, payment networks, and fraud detection systems. We help fintech companies build integrations that are reliable, scalable, and regulation-ready.
Here is How We Help You:
- PSD2 compliant open banking integration
- Payment gateway and digital wallet connectivity
- Real time transaction processing and reconciliation
- Fraud detection pipeline integration
- AES-256 encryption across all data in transit
- Plaid, Stripe, TrueLayer, and direct bank API connections
eCommerce businesses lose revenue when their platforms, inventory, and logistics systems are not talking to each other in real time. We help eCommerce brands unify their operations across every channel.
Here is How We Help You:
- Shopify, Magento, and WooCommerce integration with ERP systems
- Real time inventory sync across all sales channels
- Payment gateway and order management automation
- Logistics and shipping provider connectivity
- Unified customer data across all platforms
- Multi channel product and catalog management
Modern APIs are necessary for banks and other financial institutions to integrate their older core banking systems with digital offerings. Our banking API and data integration solutions enable our banking clients to do so without disturbing their existing setup.
Here is How We Help You:
- Core banking API integration for mobile and digital platforms
- Partner and third party onboarding workflows
- ISO 20022 and SWIFT compliant data exchange
- Regulatory reporting system connectivity
- Secure legacy to cloud integration architecture
- Open finance and account aggregation capabilities
Logistics services require real-time data from transportation services, storage facilities, and delivery channels. Lack of integration results in delays, mistakes, and a bad customer experience. Our company helps logistics organizations achieve full transparency across their operations.
Here is How We Help You:
- Carrier API integration with UPS, FedEx, and DHL
- Warehouse management system connectivity
- Real time shipment tracking and exception management
- Automated label generation and carrier rate shopping
- Last mile delivery platform integration
- ERP and WMS data synchronisation
Retail businesses need their in store and online systems to work as one. Disconnected point of sale, inventory, and customer platforms create gaps that cost sales and loyalty. We help retailers bring everything together.
Here is How We Help You:
- Point of sale and digital storefront integration
- Real time stock visibility across physical and online channels
- Loyalty program and rewards platform connectivity
- Customer data platform and marketing automation integration
- Promotional data distribution across all channels
- Inventory and order management synchronisation
API Integration Projects We Have Delivered
Every project in our portfolio reflects a real business challenge resolved through disciplined API integration services. Here are the recent API integrations we have successfully delivered.
EHR and Billing API Integration for a Healthcare Network
Industry: Healthcare
Core Technology: HL7 FHIR | Epic EHR | OAuth 2.0 | Node.js | AWS
A US-based healthcare network had been shifting data manually between seven different locations, but that resulted in recurring issues regarding their bills. We integrated Epic EHR, billing systems, and the patient portal using a single API layer. It decreased the errors in billing by 40%, increased data accessibility by 60%, and also helped pass the HIPAA compliance test at all locations.
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Marketplace API Integration for an eCommerce Retailer
Industry: eCommerce
Core Technology: Shopify API | Amazon MWS | eBay REST | PostgreSQL | Power BI
A growing eCommerce retailer was overselling and missing fulfillment deadlines across three separate marketplaces because none of the systems were connected. We brought Shopify, Amazon MWS, and eBay REST APIs together into one central hub with real time inventory sync and automated order routing. Overselling stopped, orders moved three times faster, and costs came down by 35%.
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Open Banking API Integration for a Digital Lending Platform
Industry: Fintech
Core Technology: Plaid | TrueLayer | Direct Bank APIs | AES-256 | PSD2
A European fintech lender needed to automate credit assessments across multiple banking providers, but inconsistent API standards made it risky to build in-house. We connected Plaid, TrueLayer, and direct bank APIs through a single normalized layer with PSD2-compliant consent flows and AES-256 encryption. Credit decisions are now complete in under three minutes with full PSD2 compliance.
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Common API Integration Use Cases We Deliver
Our API integration services are built around real business problems, not just connecting systems. With 14+ years of experience as a top-tier API integration company, here are the most common scenarios our team handles:
Payment Gateway API Integration
Failed payments mean lost revenue and dissatisfied customers. We develop payment gateway integrations that are reliable, secure, and scalable for use on e-commerce, SaaS, and fintech platforms.
CRM API Integration Services
Disconnected systems create gaps in your customer data. We connect your CRM with sales, marketing, and support platforms so data stays accurate, and consistent across your business.
ERP API Integration Services
We connect your ERP with the systems that matter most so your finance, procurement, and supply chain teams always work from accurate, up to date data.
Legacy System API Integration
Legacy systems hold critical business logic but limit agility. We build modern API layers that extend their capabilities without requiring full system replacement.
AI & Machine Learning API Integration
AI delivers value only when it works inside your actual processes. As a part of our AI integration services, we connect AI and ML APIs into your applications and handle the technical complexity so your teams can focus on getting results.
Real-Time API Integration
When any kind of delays impact operations, real-time integration becomes essential. We help you build low-latency integration pipelines that keep your systems synchronized as data changes.
Cloud API Integration
Cloud services function best when properly integrated. As a part of our cloud integration services, we combine AWS, Azure, and Google Cloud into a single system that is scalable, reliable, and easy to monitor.
Enterprise API Integration Services
Our enterprise API and software integration services help your businesses easily connect critical systems, automate workflows, and deliver secure data exchange without any disruption in existing operations.
Connect Your Apps, Platforms, And Systems Without Workflow Disruptions.
We ensure you’re matched with the right experts to build smooth, secure, and scalable integrations.
Your Success Is Guaranteed
We accelerate the release of digital products and guarantee your success
We Use Slack, Jira & GitHub for Accurate Deployment and Effective Communication.
How Our API Integration Process Works
We follow the same structured process on every project. It keeps delivery on track, reduces surprises, and makes sure your team knows what is happening at every stage.
Discovery and Architecture Design
We map your systems, data flows, authentication requirements, and goals into a clear architecture document for review.
Development and Configuration
Our developers create the connections and configure gateways & middleware to ensure systems integrate and interact.
Testing and Quality Assurance
Our QA team runs functional, performance, security, and contract tests on every endpoint using Postman, JMeter, and Pact.
Deployment, Monitoring, and Handoff
Lastly, we deliver your integration and assist in setting up the monitoring so your IT team won’t have any issues managing it.
Flexible Engagement Models for API Integration
Bacancy structures API integration outsourcing engagements to match the way your business actually works. Choose the model that fits your project scope, team structure, and timeline requirements.
Fixed scope, set timeline, and defined deliverables. A good fit when your integration needs are clearly scoped with a defined start and end point. You get fixed pricing, milestone-based delivery, and full accountability from kickoff through production.
Bring in long-term engineering capacity without the overhead of hiring. Best for ongoing API development or when you need to scale your team. Bacancy engineers work alongside your team and follow your tools, processes, and delivery schedule.
Covers monitoring, maintenance, and support after your integration goes live. Bacancy handles performance monitoring, security patches, third-party API changes, and incident response under a structured SLA.
Tech Stack We Use for API Integration
Bacancy's API integration services are powered by a carefully selected technology stack. We choose tools based on project requirements, not vendor preferences, ensuring every integration is built with the right foundation.
| Languages | Node.jsPythonJava.NET (C#)GoRubyPHP |
| API Protocols | RESTGraphQLgRPCSOAPWebSocketsServer-Sent Events |
| API Gateways | AWS API GatewayAzure API ManagementKongApigeeTykKrakenD |
| Authentication | OAuth 2.0OpenID ConnectJWTSAML 2.0mTLSAPI Keys |
| Documentation | OpenAPI 3.0 (Swagger)AsyncAPIPostmanStoplightRedoc |
| Testing | PostmanREST AssuredJMeterK6NewmanPact (Contract Testing) |
| iPaaS and Middleware | MuleSoft AnypointDell BoomiWorkatoZapiern8nApache Camel |
| Message Brokers | Apache KafkaRabbitMQAWS SQS/SNSAzure Service BusGoogle Pub/Sub |
| Monitoring | DatadogNew RelicPrometheusGrafanaAWS CloudWatchAzure Monitor |
Why Choose Bacancy as Your API Integration Company?
Most integration projects do not fail because of the technology. They fail due to poor planning, overlooked edge cases, and teams that treat delivery as the finish line instead of staying involved.
At Bacancy, we take a different approach. We treat every integration as an ongoing responsibility, not just a one time task. We stay accountable beyond delivery and make sure that everything continues to work as expected.
Benefits of Partnering With Bacancy For API Integration:
- Certified engineers with hands-on API integration experience across industries
- Flexible engagement models that fit your project scope and team structure
- Strong security practices applied across every integration we build
- Full source code ownership and signed NDA from day one
- Time zone aligned teams with regular daily, weekly, or monthly reporting
- No long-term contracts or lock-ins of any kind
- Post-deployment support with proactive monitoring and incident response
- Transparent delivery process with clear milestones at every project stage
- Round-the-clock technical support available whenever your team needs it
- Agile development approach that adapts as your requirements change
Frequently Asked Questions
Still have questions? Let's talkCertainly, when it comes to our consulting services in relation to API integration, we provide you with an assessment of your existing system, identification of areas that need improvement, recommendations of protocols, and preparation of a plan of action before we even start with the actual development process.
Bacancy provides integration services for various integration types like REST, SOAP, GraphQL, and webhooks in different industries such as healthcare, fintech, eCommerce, logistics, and banking. Integration is performed via third-party platforms, legacy systems, and custom-built software, depending on client needs.
Pricing is determined according to factors such as the number of systems involved, implementation complexity, and compliance. Some rough pricing classifications are as follows:
- Low Difficulty: From $3,000 onwards
- Medium Difficulty: Ranging between $10,000 to $40,000
- Enterprise Solution: Above $60,000
Bacancy provides you with three different engagement models according to your business needs:
- Project-based API Integration: Scope and timeline defined; single integration.
- Dedicated Team: A team dedicated exclusively to your integration-related tasks.
- Maintenance & Managed Services: Post-project management of integrations.
Connect with us for further inquiries regarding your project.
A basic integration can be completed in two to four weeks. Mid complexity projects typically take six to ten weeks. Enterprise projects with multiple endpoints and compliance requirements can take three to six months. A detailed timeline with defined milestones is provided during the discovery phase.
Yes, when done right. At Bacancy, our standard security setup includes:
- OAuth 2.0 authentication
- AES-256 encryption
- JWT token verification
- Rate limiting
For healthcare and finance projects, we go further with:
- Field-level encryption
- Detailed audit logs
- Role-based access controls
All of this is built to meet regulations like HIPAA, PCI DSS, and GDPR.
Yes. Bacancy builds modern APIs on top of your existing infrastructure, so there is no need to tear down or replace what you already have.
Depending on your system, we use the right approach, whether that is service-level adapters, middleware solutions, ETL pipelines, or CDC solutions, to make everything connect and work together properly.
Compliance is inherent in the very design of the product from the outset. In terms of GDPR compliance, we utilize data minimization, consent management, and data localization.
In the case of HIPAA compliance, we provide end to end encryption, audit logs, and minimum necessary access.
Yes. There will always be a post-deployment support phase for all projects after the systems have been deployed. Our services include monitoring, incident management, security updates, and system maintenance on an ongoing basis according to the SLA.
This will ensure that your integration remains highly functional and dependable, with no need to worry about anything going on in the background.
Top-Tier IT Geniuses
Bacancy Technology is an exclusive hub of top dedicated software developers, UI/UX designers, QA experts, and product managers with incredibly rare and hidden talents you will ever come across. We let you access the exceptional IT talent globally, from independent software developers to fully managed teams.
Time Zone Aligned
Timezone is never a constraint when you are working with Bacancy Technology. We follow a simple procedure- our developers and your time zone. Hire dedicated software developers from us and collaborate from far away to work according to your time zone, deadline, and milestone.
Experienced Team
Whether you are looking for skilled developers in emerging technologies or looking for an extended arm to augment your existing team, we can lend a helping hand in both situations. We are a full-stack software development company with 1050+ skilled and experienced software developers whom you can hire at your convenience to address ongoing business challenges.