Can Akveo modernize or integrate an existing API?

Yes, we frequently step in to upgrade and optimize existing APIs that have become slow or outdated. Our engineers can refactor legacy monolithic code into fast microservices and implement modern caching layers to lower latency. We ensure that your modernized backend maintains backward compatibility so that your daily business operations experience zero downtime.

API Development and Integration Services for AI-Driven Systems

Eliminate system fragmentation with custom-built data pipelines designed to scale. At Akveo, we engineer high-performance API layers that connect your core business software with advanced AI models and agentic workflows.

Get Your Project Estimate

[ Services ]

API Development Services Tailored to Your Business Needs

Our custom API development company ensures that your databases, legacy networks, and advanced AI models communicate fluidly without performance bottlenecks or unnecessary architectural bloat.

Custom API Development

Our team designs and builds scalable backend APIs from scratch to support your unique business logic and specialized software applications.

What you get:

Bespoke backend architectures built for massive data throughput
Secure tool-calling endpoints optimized for agentic AI execution
Custom authentication frameworks and strict role-based access controls
Comprehensive documentation

[ Case Studies ]

Our Custom APIs in Action

Read through our case studies to see how we design custom APIs to connect legacy databases and modern AI applications and ensure zero operational downtime.

Mobile DevelopmentAPI Integration

Cross-Platform Migration and API Development

70% reduction in app development and maintenance costs

We partnered with Compass Point to overhaul a legacy PhoneGap. We migrated the system to a single React Native codebase that serves both iOS and Android platforms. We engineered new backend API services to maintain full backward compatibility with the client's existing Microsoft SQL Server database. The updated application serves 1,000+ daily active users with seamless performance.

See more details

Retool DevelopmentAPI Integration

Multi-API Retool Integration for Gifting Marketplace

Increased retail revenue within one month of launch

We partnered with Afloat to build role-based operational dashboards using Retool, JavaScript, and TypeScript. We ensured real-time data synchronization by integrating the platform with the Shopify API, Afloat Backend APIs, and a specialized Retail Operations API. We also embedded the custom Retail Partner Dashboard directly into Shopify to enable real-time inventory updates, order tracking, and automated reporting.

Full-Stack DevelopmentHealthcare

Multi-Tenant API Architecture for HIPAA-Compliant Healthcare Platform

100% HIPAA and 42 CFR compliance

We built a secure digital platform for opioid response teams to replace manual spreadsheets and paper records. The system protects sensitive patient data at both the database and API levels. To help field workers manage cases without an internet connection, we engineered an offline-first mobile app using a split API setup. Read APIs load data to the device locally, while Write APIs queue up field updates to sync automatically when teams are back online.

See more details

[ Our Advantages ]

Why Akveo for Your Custom API Development?

We have deep technical expertise in engineering robust API layers capable of processing massive enterprise data streams and powering autonomous AI systems.

Agentic AI Readiness

Our engineers design highly optimized API schemas allowing your autonomous AI agents to interact with your backend data and trigger complex enterprise workflows seamlessly.

High-Throughput Data Pipelines

We build elastic architectures that can handle heavy payload volumes and complex relational queries with sub-100ms latency.

Zero-Trust Security

We protect sensitive corporate infrastructure and data with strict role-based access controls, field-level encryption, and end-to-end authentication protocols at the API level.

Smooth Legacy Modernization

Our team refactors monolithic backend systems into microservices to introduce data-fetching layers and maintain total backward compatibility with your databases.

Multi-Tenant Data Isolation

We implement robust multi-tenant API logic that enforces strict data separation at both the application and database levels.

Offline-First Architecture

At Akveo, we build specialized split Read/Write API logic that can queue field operations locally during connection drops.

Need Custom API Integration?

Share your project scope, and we will provide a clear, phase-by-phase timeline breakdown.

Request a Project Estimate

[ Trusted by the Industry ]

Enterprise API and AI Infrastructure Built for Complex Workflows

We have deep technical expertise in engineering robust API layers capable of processing massive enterprise data streams and powering autonomous AI systems.

10+Years of Solving Complex System Integration Challenges

97%Direct Client Referral Rate

100+Software Developers and Tech Experts

[ Industries ]

APIs Engineered for Diverse Enterprise Sectors

We focus on optimizing data connectivity and integrations for strictly regulated business environments across multiple domains.

Healthcare

Our developers build HIPAA-compliant mobile and web APIs designed to securely exchange EHR data and power offline-first mobile apps for field care teams.

Insurance

We deliver custom API integration layers that eliminate technical debt for carriers by connecting modern mobile claims apps and web portals with legacy databases.

Energy

Our engineers construct high-throughput telemetry APIs that aggregate real-time IoT sensor data from grid infrastructure.

Manufacturing

We develop robust backend APIs that connect factory floor automation networks and mobile inventory scanning applications to central databases.

Fintech

We engineer ultra-low latency transaction APIs equipped with zero-trust authentication protocols and automated reporting pipelines for audit-ready compliance.

Edtech

Our team designs agile API architectures that break down information silos between modern mobile learning apps and rigid institutional software.

[ Tech Stack ]

Production-Ready Tech Stacks for Custom APIs

We provide mobile and web API development services using highly flexible technology stacks to maximize data throughput and minimize latency.

Frameworks & Languages

React Native.Net

Backend & Infrastructure

Node.jsAzureAWSGoogle CloudSupabase

AI Technologies

Open AIAnthropicLlamaGeminiGroqLangGraphLangChainCrewAITavily

Automation Platforms

RetoolAirtableWebflowAppsmith

[ Partnership Models ]

Flexible Engagement Models for API Development Services

We align our cooperation models with your technical infrastructure and integration requirements to ensure timely and flawless API delivery.

Dedicated Development Team

We assemble and manage an exclusive team of software developers, database specialists, and integration architects focused solely on executing your long-term infrastructure roadmap.

Best for: Multi-phase legacy backend modernizations, ongoing management of complex microservices

Project-Based

Your team defines the core integration goals, while we take technical ownership of the API architecture, schema design, security compliance, and production deployment.

Best for: Building bespoke RESTful or GraphQL APIs from scratch, launching custom integration layers for third-party platforms, performing backend upgrades

Staff Augmentation

When your internal engineering team lacks the niche technical expertise or capacity required to hit a milestone, we provide vetted developers who embed directly into your daily sprints.

Best for: Accelerating tight launch timelines, embedding specialized agentic AI tool-calling endpoints

Connect Your Software with Custom API Integration

We build high-performance API endpoints and custom middleware to securely connect your databases to advanced solutions.

Talk to Our Experts

[ Testimonials ]

Why Clients Stay with Us

95% of our partners continue working with us beyond the initial scope and more than 70% stay with us for 2+ years.

A partner who thinks along with you

I’ve worked with Akveo on multiple small and large-scale projects over the last few years. Akveo is innovative, agile, and reliable. If you are looking for a development partner who thinks along with you, you will enjoy working with Akveo.

[ FAQ ]

Frequently Asked Questions

API development is the process of building the underlying software bridges that allow different applications and databases to talk to each other. It presupposes designing the secure endpoints, data formatting rules, and communication protocols. They are intended for handling your backend logic. This ensures that your mobile apps, web portals, and internal enterprise software exchange data efficiently without performance lag.

Custom API integration is the process of connecting disparate, isolated software systems into a unified digital ecosystem. For example, we can help you connect legacy databases, internal CRMs, and third-party tools. In this case, we don't apply one-size-fits-all plugins. Instead, we write custom code to map data perfectly between these platforms. This prevents synchronization errors and automates your cross-platform workflows.

The timeline greatly depends on complexity. Based on our experience, we can estimate that a standard custom API project usually takes anywhere from four weeks to several months. A straightforward project might require just a couple of weeks. But when it comes to a multi-tenant enterprise system with strict compliance rules, you should expect that the project will take longer. We always provide a clear timeline breakdown within 48 hours after you share your requirements with us.

Custom API development provides you with complete control over your data flow and business logic. Tailored APIs scale with your specific user volume and prevent vendor lock-in. Meanwhile, rigid off-the-shelf connectors can slow down your growth or even make it fully impossible. Custom APIs also allow you to engineer specialized data structures, which are essential for feeding clean information into advanced enterprise AI systems.

Build a Scalable API Layer for Your AI Infrastructure

We engineer robust API infrastructures designed to support heavy traffic and power autonomous AI tool-calling.

Dmitry Klim

Head of Growth

5900 Balcones Drive #21729, Austin, TX 78731[email protected]+1 (512) 921-9631