Dream It, We Build It

Our Valuable Clients

Hire Expert REST API Developers with Strong Backend Engineering Skills

As a reliable API development company, Space-O Technologies offers remote REST API developers for startups, SaaS platforms, and enterprise applications that need secure, scalable, and production-ready backend systems. The services below highlight the REST API development expertise and backend capabilities our team brings to modern software products.

Custom REST API Design and Development

Hire remote REST API developers to design resource-first endpoints, consistent URIs, and predictable responses aligned with OpenAPI and JSON:API. They turn complex business rules into clean, versioned APIs that product, mobile, and partner teams can use without guesswork, giving you an API layer built for clarity and long-term evolution.

API Integration and Third-Party Orchestration

Our API experts connect Stripe, Twilio, Salesforce, HubSpot, QuickBooks, Plaid, Shopify, and other SaaS tools so workflows stay synchronized across systems. You can also hire Google API and Access API developers to unify legacy data. They design webhooks, retries, idempotency, and rate-limit handling so integrations stay reliable under real production traffic.

AI-Integrated API Development

Our engineers wrap OpenAI, Anthropic, Gemini, Hugging Face, and custom ML behind clean REST endpoints so your teams ship AI features without managing model infrastructure. They implement prompt flows, streaming responses, token controls, semantic caching, and safe fallbacks, giving your apps LLM, RAG, and embedding capabilities behind stable, well-governed API contracts.

API Security and Authentication

Hire REST API developers who implement OAuth 2.0, OpenID Connect, JWT, API keys, mTLS, and role-based access control for single- and multi-tenant systems. They harden APIs against OWASP API Top 10 risks, injection attacks, and token leaks with encryption, scoped permissions, and ongoing security checks so sensitive data stays protected end to end.

API Performance Optimization and Caching

Our REST API specialists profile slow endpoints, trim payloads, tune database queries, and apply multi-layer caching with Redis, Varnish, and edge CDNs. They move heavy tasks to async queues like SQS, RabbitMQ, or Kafka so background work never blocks user-facing calls, keeping latency within the budgets your product promises.

API Documentation, Testing, and Developer Experience

Hire REST API developers who treat DX as core work, producing OpenAPI specs, Swagger portals, Postman collections, and contract tests. They pair these with automated unit, integration, and load testing so your APIs stay stable as teams grow, new features ship, and more partners build on top of your platform.

Hire Expert REST API Developers for Your Next Integration

Share your API requirements with our team today. We map your integrations, data contracts, and scaling needs to senior engineers who can start delivering usable endpoints within the first sprint.

Clients Love Space-O Technologies

Project Summary

Business services

Web App Dev for Local Service Referral System

Space-O Technologies designed and launched our website. They worked with a third-party designer and handled all technical implementation. They also contributed to feature development.

View All

Project Summary

Hospitality & leisure

Booking Platform Dev for Recovery Facility Marketplace

Space-O Technologies has developed a digital booking platform for a recovery facility marketplace. They’ve built a platform that connects users with vetted recovery facilities, retreats, and activity hosts.

View All

Project Summary

Transportation

Custom Platform Dev, Web App Dev and Backend API Dev

Space-O Technologies was hired to develop a platform and mobile apps. The platform dispatches, manages jobs, and integrates Stripe and Google API. They were rehired to help with ongoing optimization.

View All

Project Summary

Healthcare

Web & App Development for Telemedicine Company

Space-O Technologies provided web and app development services for a medical telecoms company. Their team handled product and UI designs as well as integrated a telemedicine platform to build the app and site.

View All

Project Summary

Business services

Web & Mobile App Dev for Parking Management Company

A parking management company hired Space-O Technologies to develop a mobile app and a web interface for administrators. They also integrated payment gateways and QR code scanners.

View All

“They strive to satisfy their customers and deliver on their promises.”

Internal stakeholders are pleased with the platform and the foundation it provides for future growth. Communicative and committed, they keep long-term concerns in focus while developing their solutions to ensure consistent growth. Customers can expect responsible and proactive management.

Bashar Anabtawi
CEO and Founder, ClickaService
Charlottetown, Prince Edward Island

5.0
Quality5.0
Schedule4.5
Cost5.0
Willing to Refer5.0

“I love working with them. They consistently meet my needs and challenges and are always willing to work with me.”

Space-O Technologies has met the client’s needs and challenges. Their team understands all the assigned tasks and works well with the client, enabling them to deliver outputs on time. They also impress the client with their professionalism, expertise, and communication via email and meetings.

Mnelsa Del Rosario
Owner, Recovery and Retreats
Scarsdale, New York

5.0
Quality5.0
Schedule5.0
Cost5.0
Willing to Refer5.0

“Quality of development and project management was consistently high.”

The platform and apps are quality products, and they were delivered with professionalism across the board. The team impressed with their consistently good project management and responsiveness, especially to critical tasks.

Anonymous
Founder & CEO, TLC
United Kingdom

5.0
Quality4.5
Schedule5.0
Cost5.0
Willing to Refer5.0

“I was very impressed with their dedicated hard work.”

The platforms are fully functional and successful. Space-O Technologies completed the project to the partner’s expectations. Their team is easy to work with and responsive to needs. It was clear they all worked hard to develop the platforms.

Anonymous
Consultant, Telemedicine Company
Louisville, Kentucky

5.0
Quality5.0
Schedule5.0
Cost5.0
Willing to Refer5.0

“They did deliver the project on time.”

Thanks to Space-O Technologies’ work, the client experienced an increase in revenue. They communicated frequently and promptly in person and via virtual meetings, ensuring an effective workflow. Their app development skills and timely delivery were hallmarks of their work.

Amin Fakhri
Manager, Appway Park Inc
Vancouver, British Columbia

4.5
Quality4.5
Schedule4.0
Cost4.5
Willing to Refer5.0


Hire Remote RESTful API Developers to Build Fast, Reliable, and Secure APIs

Skip the long ramp-up and bring in a focused REST API pod that fits how your team already works. Hire remote REST API developers for:

  • Years of hands-on experience with Node.js, Express, NestJS, Spring Boot, Django REST Framework, FastAPI, Laravel, .NET Core, and Go to build secure, high-performance, and maintainable REST services.
  • Experience wrapping AI and data workloads behind clean APIs, including LLM orchestration, RAG pipelines, embedding services, and event-driven data products using providers like OpenAI, Anthropic, and modern vector databases.
  • Cloud-native delivery on AWS, Azure, and Google Cloud using Docker, Kubernetes, infrastructure-as-code, API gateways, and CI/CD so your REST APIs deploy reliably, version safely, and roll back cleanly when needed.
  • Disciplined engineering practices with contract testing, automated integration suites, linting on API specs, and strict code review gates so your API surface stays consistent, well-documented, and easy to evolve.

Fill out the form to hire dedicated backend developers with expertise in API development and integrations who act as an extension of your in-house team.

Talk to Our Experts Now

Scalable and Secure Solutions Delivered by Our Dedicated Development Team

Each API-led project we deliver is tailored to client objectives, combining technical excellence with measurable outcomes that drive operational efficiency and partner growth.

Our dedicated development team built the backend for an AI-powered recruitment platform, enabling automated interview workflows, AI-generated questions, and intelligent candidate evaluation. The system integrates video interviews, speech-to-text processing, and role-based access so recruiters can manage hiring efficiently while maintaining consistency and control across the platform.

Today, the platform supports businesses in handling large volumes of candidates with minimal manual effort. By automating screening, interviews, and evaluation, it reduces hiring time, improves recruiter productivity, and delivers a scalable, data-driven recruitment experience across web applications.

GPTVix AI Recruitment Software Platform

Our dedicated development team built native Android and iOS apps for a B2B dental supplies distributor, integrating them with the client’s eCommerce backend through a REST API layer syncing product catalogs, accounts, carts, and orders in real time.

The apps support 130,000+ products with barcode scanning, quick ordering, wishlists, invoice tracking, biometric login, and in-app messaging. A unified API and shared product infrastructure helped streamline repeat orders and support large-scale B2B operations across web and mobile platforms.

Pearson Dental Supply B2B Dental Supplies eCommerce App

Our dedicated development team built native iOS and Android POS apps for a Stripe-powered payment platform, integrating them with a custom backend and the Stripe API to handle transaction logging, user management, and split payment routing between merchant and platform accounts.

Today, the platform serves more than 500,000 users globally and processes over five million dollars in transactions every month, with top-10 rankings across regional app stores. By giving small vendors and service providers a hardware-free way to collect card payments on a phone, it removes the cost of dedicated POS terminals and gives the operator a scalable, commission-based revenue model on iOS and Android.

PayNow for Stripe Mobile POS Card Payment App

Flexible Engagement Options to Hire REST API Experts That Match Your Project Needs

Choose the hiring model that best fits your project scope, timeline, and budget, whether you need part-time support, full-time dedication, or flexible hourly engagement, so you can hire REST API programmers who deliver quality results on your terms.

Hire Part-Time REST API Developer

Get consistent REST API development support for endpoint enhancements, API optimization, backend integrations, and iterative improvements without a full-time commitment.

80 hours/month
  • 4 hours per day, 5 days a week
  • Monthly billing cycle
  • Minimum engagement: 1 month
  • Ideal for API maintenance, third-party integrations, bug fixing, and performance improvements

Hire REST API Development Team

Scale with a dedicated REST API development team backed by DevOps, QA, and a tech lead for end-to-end API development, integration management, and long-term backend scalability.

Project-Based
  • Billing cycle: Monthly
  • 8 hours a day, 5 days a week
  • Minimum: 1 month
  • Best for SaaS platforms, enterprise integrations, microservices architecture, and cloud-native applications

Why Businesses Trust Space-O Technologies for REST API Expertise

Hire best REST API specialists who combine deep technical expertise with disciplined project execution, clear communication, on-time delivery, and a long-term partnership mindset that turns your API layer into a durable competitive asset.

Production-Tested REST API Expertise

Our developers bring 5–12 years of experience building APIs that handle real traffic, not just demos. They have shipped enterprise and consumer APIs managing millions of requests, complex auth flows, and long integration chains, which means fewer incidents and more predictable delivery for your roadmap.

1,200+ Projects Delivered Successfully

Since 2010, we have delivered over 1,200 projects for clients in healthcare, banking and fintech, ecommerce, logistics, SaaS, and enterprise software. This domain depth helps our API engineers anticipate regulatory, data, and integration constraints before they become blockers for your product.

Recognized and Trusted Globally

Space-O Technologies is regularly featured among top API development companies, backed by strong client reviews and repeat business. Startups, scale-ups, and enterprises worldwide trust our team to design, build, and evolve API platforms that become long-term assets, not short-lived integrations.

Developers Who Fit How Your Team Works

Our engineers adapt quickly to your workflows, tools, and communication style, collaborating via Slack, Jira, Linear, GitHub, GitLab, or Asana. They ramp on your domain, standup rhythm, and release practices in days, so you get real contributions from the first sprint instead of long onboarding.

Quality-First API Development Process

Every commit passes through peer review and automated checks before production. We use contract tests on API specs, integration tests, static analysis, and performance monitoring from day one, keeping your API surface consistent, well-documented, and safe to extend without hidden regressions.

Long-Term, Transparent Partnerships

Most clients return for new integrations, additional API products, and ongoing support. You get daily updates, frequent demos, and clear dashboards for progress, risks, and timelines, so there is no guesswork around project status, integration readiness, or budget use at any stage.

How to Hire REST API Developers at Space-O Technologies

Our streamlined hiring process helps you onboard experienced REST API developers for hire quickly while ensuring strong technical alignment, secure collaboration, and smooth integration with your existing engineering team.

01

Share Your API Requirements

Start by sharing your backend architecture, integration needs, target users, and business goals. Whether you need SaaS APIs, mobile backends, enterprise integrations, or AI-powered services, we map your requirements to the right REST API development expertise and engagement model.

02

Get Matched With REST API Developers

Based on your requirements, we shortlist REST API developers experienced in Node.js, Spring Boot, FastAPI, Django, Laravel, .NET, and Go. You receive carefully selected developer profiles aligned with your backend architecture and scalability goals.

03

Evaluate Technical Expertise

Interact directly with shortlisted developers to assess their expertise in REST architecture, authentication, API security, integrations, scalability, and production-ready backend systems. Technical discussions and coding evaluations help identify the right fit for your project.

04

Finalize Scope and Engagement

Once you select your developers, we define timelines, deliverables, communication workflows, and engagement terms. NDAs and IP protection agreements are finalized to ensure secure and transparent collaboration throughout the project lifecycle.

05

Onboard and Start Development

Our team handles onboarding, repository access, environment setup, and workflow integration so your REST API developers can quickly start contributing to sprint goals and backend delivery without unnecessary delays.

06

Scale Your Team as Needed

Monitor delivery through sprint reviews, progress updates, and milestone tracking. As your product evolves, you can scale your REST API development team up or down based on changing roadmap priorities and infrastructure requirements.

Hire REST API Programmers with Expertise in the Latest Tech Stack

Hire REST API programmers skilled in the latest frameworks, libraries, and tools for building modern, high-performance APIs that scale seamlessly, reduce integration risk, and support long-term platform growth.

Core API Languages & Runtimes
  • Node.js
  • Python
  • Java
  • Go
  • .NET
  • TypeScript
API Frameworks
  • Express.js
  • NestJS
  • Spring Boot
  • FastAPI
  • Django
  • ASP.NET Core
API Specifications & Protocols
  • REST
  • GraphQL
  • gRPC
  • WebSockets
  • OpenAPI
API Gateways & Management
  • Kong
  • AWS API Gateway
  • Azure API Management
  • Apigee
Authentication & Security
  • OAuth 2.0
  • OpenID Connect
  • JWT
  • Auth0
Databases & Caching
  • PostgreSQL
  • MySQL
  • MongoDB
  • Redis
Messaging & Event-Driven
  • Apache Kafka
  • RabbitMQ
  • AWS SQS
Testing & Quality Assurance
  • Postman
  • JMeter
  • k6
Monitoring & Observability
  • Prometheus
  • Grafana
  • Datadog
  • OpenTelemetry
Cloud Platforms
  • AWS
  • Microsoft Azure
  • Google Cloud
AI Technologies
  • OpenAI
  • Anthropic
  • Google Gemini
  • LangChain
  • AWS Bedrock
DevOps & CI/CD
  • Docker
  • Kubernetes
  • GitHub Actions
  • Terraform

Turn Fragmented Integrations Into a Unified API Layer

Bring in senior REST API developers who can audit your current endpoints, fix inconsistent contracts, harden security, and ship a documented, partner-ready API platform without disrupting your release cadence.

Industries We Serve

Find the right REST API developers for hire to build tailored API backends and integration layers for your business domain. Our team designs and delivers APIs that meet your industry’s performance, compliance, and scalability requirements.

Other Backend Development Expertise Beyond REST APIs

In addition to our dedicated REST API team, hire backend developers across other modern stacks when your architecture or existing systems require them.

Hire MuleSoft Developers

Recommended when you need API-led connectivity on the Anypoint Platform, DataWeave transformations, and enterprise integrations across Salesforce, SAP, and other core systems.

Hire Node.js Developers

Well-suited for fast, non-blocking REST APIs, real-time services, and BFFs that power high-traffic web and mobile products.

Hire Laravel Developers

Recommended for building PHP-based REST APIs, admin panels, and SaaS backends on a mature, convention-driven framework.

Hire PHP Developers

Ideal for legacy API modernization, custom integrations, and pragmatic server-side development on established PHP stacks.

Hire Ruby on Rails Developers

Best for quickly launching SaaS APIs, internal tooling, and admin-heavy products with a convention-first framework.

Hire NestJS Developers

Ideal to design and build fast, scalable REST APIs on top of the Node.js runtime, while integrating with databases, queues, and third-party services.

FAQs for Hiring Dedicated REST API Developers

Part-time REST API developers (80 hours/month) typically range from USD 2,400 to USD 5,000 per month, depending on seniority and the complexity of your integrations, security requirements, and cloud setup. Full-time dedicated REST API developers (160 hours/month), who work exclusively on your product, usually fall between USD 5,000 and USD 9,000 per month. Hourly engagements start from USD 30 to USD 55 per hour with a minimum of 25 hours, which is ideal for API audits, security reviews, PoCs, or focused sprints. For long-term partnerships, our pricing at Space-O Technologies is structured to support stable, enterprise-grade delivery rather than one-off gigs, and we will share a tailored proposal for your roadmap, not just a generic rate card.