PlaxonicPlaxonic logoPlaxonic logo
Digital Transformation / Engineering

Microservices & API
Development Services

We build APIs and microservices that connect applications, services, and data across your technology ecosystem. Our API development and integration services cover custom APIs, web APIs, third-party integrations, and microservices architecture designed around your application requirements.

BoxesBoxes iconBoxes iconIndependently deployableGit BranchGit Branch iconGit Branch iconContract-first APIsRepeatRepeat iconRepeat iconEvent-driven
GET/api/v2/orders
20042ms
Service topologyDiagram of an API gateway routing requests to microservices.Diagram of an API gateway routing requests to microservices.
Gateway
Git BranchGit Branch iconGit Branch icon
edge
auth-svc
orders-svc
payments-svc
RepeatRepeat iconRepeat iconevent-bus · order.created → 3 subscribers
What We Build

API Solutions Designed For Your Architecture

We design and build APIs and microservices around your integration requirements. Our developers help you establish reliable API structures and build architectures that can evolve as your technology needs change.

01
File JsonFile Json iconFile Json icon

API Development Services

We provide custom API development for web, mobile, enterprise, and internal applications, with clear contracts, authentication, documentation, and versioning built around your requirements.

02
Arrow Left RightArrow Left Right iconArrow Left Right icon

API Integration Services

Our team connects your applications, third-party platforms, databases, and business systems through reliable API integrations that keep data moving across your technology ecosystem.

03
BoxesBoxes iconBoxes icon

Microservices Development

We design and develop independent services around your business capabilities, with clear service boundaries and communication patterns that support modular application architectures.

04
SplitSplit iconSplit icon

Microservices Modernization

Modernize legacy and monolithic applications through a gradual migration to microservices. We identify suitable components for decomposition while keeping critical business operations running.

05
Door OpenDoor Open iconDoor Open icon

API Gateway & Management

Set up API gateways to handle routing, authentication, access control, rate limiting, traffic management, and monitoring across your API ecosystem.

06
WrenchWrench iconWrench icon

API Maintenance & Optimization

Keep your APIs and microservices reliable after deployment through performance optimization, monitoring, troubleshooting, security updates, and ongoing architectural improvements.

Communication Protocols

Right API Type & Protocol for Every Communication

Different applications need different ways to exchange data. Our API development services use communication protocols suited to your application architecture, data requirements, and integration workflows.

REST

REST supports clear resource-based communication between clients and services. It works well for business applications, third-party integrations, and systems that need widely supported API standards.

Best for
Business applicationsThird-party integrationsWidely supported standards
1GET /api/v2/orders/8821
2Accept: application/json
 
4200 OK
5{ "id": 8821, "status": "shipped" }
How We Deliver

Our Structured Approach to Microservices & API Development

We follow a structured development process that keeps your microservices and APIs aligned with your application architecture and business requirements.

01

Business & Technical Alignment

Goals · Integration Requirements

Our team begins by understanding your business goals and integration requirements. This helps us define a development strategy that addresses your business priorities and fits your current technology environment.

02

Architecture & Service Planning

Service Boundaries · Patterns

We map application components, define service boundaries, and select suitable communication patterns. This creates a clear architectural foundation for developing APIs and microservices that work together effectively.

03

API-First Design

Contracts · Auth · Error Handling

We plan API contracts, data structures, authentication, and error handling before implementation. This gives our development teams a shared understanding of how services will communicate and helps reduce integration issues later.

04

Modular Development

Components · Interfaces

We develop applications in manageable components with defined responsibilities and interfaces. This helps us support you with easier maintenance, targeted updates, and independent development where the architecture allows.

05

Integration & Quality Assurance

Integration · Performance Testing

We validate API behavior, service communication, data exchange, security controls, and failure handling. Integration and performance testing help identify issues before they affect production environments.

06

Continuous Improvement

Monitoring · Refinement

After deployment, monitoring and performance data help identify opportunities to improve reliability, efficiency, and maintainability. We refine APIs and services as your applications, workloads, and business requirements change.

Why Plaxonic

Microservices & API Engineering Built Around Your Systems

Our developers approach API and microservices development with your existing architecture, business requirements, and long-term technology plans in mind. We focus on clear service boundaries, reliable integrations, maintainable code, and practical solutions your teams can manage after delivery.

01
Layers 3Layers 3 iconLayers 3 icon

Architecture-Led Development

We define the architecture before building individual services, with clear boundaries, communication patterns, and technology choices based on your application requirements.

02
File JsonFile Json iconFile Json icon

Custom API Development

We design your APIs around how your applications and systems need to exchange data. We build custom APIs with clear contracts, authentication, documentation, versioning, and integration requirements.

03
SplitSplit iconSplit icon

Microservices Modernization

We can modernize existing monolithic applications incrementally through targeted service decomposition. We identify suitable components for migration while keeping critical business operations running.

04
Arrow Left RightArrow Left Right iconArrow Left Right icon

Integration Expertise

We connect applications, services, databases, third-party platforms, and enterprise systems through APIs and messaging patterns suited to your architecture.

05
Shield CheckShield Check iconShield Check icon

Built for Reliability

Throughout development, we consider resilience, error handling, security, monitoring, and testing. This helps your services remain dependable as traffic, integrations, and system complexity increase.

06
Life BuoyLife Buoy iconLife Buoy icon

Ongoing Technical Support

After deployment, your systems may still need optimization, monitoring, new integrations, and architecture changes. We provide ongoing technical support to help your APIs and microservices evolve with your requirements.

Proven Outcomes

Systems We Helped Engineer

Explore how we have helped businesses solve complex technology challenges through API development, system integration, and modern application architectures.

VIEW ALL CASE STUDIESArrow Up RightArrow Up Right iconArrow Up Right icon
Cartwheel Retail
Monolith Decomposition
Cartwheel Retail

Breaking a 1.2M-line monolith into 40 services, without a freeze

Using a strangler-fig approach, we peeled checkout, catalog, and fulfillment out of a decade-old monolith one bounded context at a time. New services shipped behind the existing API while the legacy core kept serving traffic, so the business never paused.

11x
more frequent deploys
0
minutes of migration downtime
Meridian BankAPI Platform
Meridian Bank

An open-banking API platform serving 80M calls a day

A governed API gateway with OAuth2, rate limiting, and a developer portal turned core banking into a partner-ready product.

80M+
API calls per day at p99 under 90ms
Polaris LogisticsEvent-Driven Architecture
Polaris Logistics

Real-time shipment tracking on a Kafka event backbone

Event sourcing and CQRS replaced nightly batch jobs, giving customers live tracking and the ops team an auditable history.

Real-time
tracking, replacing 6-hour batch delays
FAQs

Frequently Asked Questions.

Message CircleMessage Circle iconMessage Circle icon

Still have questions?

Our API and microservices engineers are happy to talk specifics.

Talk to an ExpertArrow Up RightArrow Up Right iconArrow Up Right icon

An Application Programming Interface (API) acts as a digital messenger, letting two different applications talk to each other. It defines rules, requests, and responses so systems can exchange data and functionality seamlessly without needing to know how the other system is built internally.

Build Better Connected Systems

Let's design the right API and microservices architecture for your requirements, built with your existing systems in mind.