Hire the Best API Developers
in Indonesia

More than 3,000 reviews on G2
Rating is 4.5 out of 5.
4.5/5
of Upwork by G2 peer reviewers
A Aksa N.

Makassar, Indonesia

$40/hr
4.8
106 jobs

Senior Flutter Developer and FlutterFlow App Developer with 5+ years of experience. 💎 FlutterFlow Expert and FlutterFlow Partner Recognised by 𝐅𝐥𝐮𝐭𝐭𝐞𝐫𝐅𝐥𝐨𝐰 🤝 Certified FlutterFlow Developer & Flutter Developer 🎊 Upwork Top 1% of FlutterFlow Developer As a Flutter Developer, I specialize in Flutter Development, helping startups and businesses create and scale mobile apps in Flutter, from MVPs to complex production systems. I also work as a Full Stack Developer Flutter, handling both frontend and backend integration for complete solutions. 🏆 MVP Success Real outcomes from products I’ve helped ship: ✔ FlutterFlow MVP that secured $160K seed funding ✔ FlutterFlow + Flutter app with 10,000+ active users 💡 Flutter Development Expertise ✔ End-to-end Flutter Development for scalable products ✔ Building modern mobile apps in Flutter with clean architecture ✔ Strong experience as a Flutter App Developer and Flutter Developer ✔ Advanced Firebase Flutter integration (Auth, Firestore, FCM, Crashlytics) ✔ Experience as a FlutterFlow Developer for rapid MVP delivery ✔ State management: BLoC, Provider, Riverpod ✔ API integration and backend connectivity I focus on delivering mobile apps in Flutter that are stable, maintainable, and optimized for growth. 🔧 Flutter App Development & Enhancement As a Flutter Developer, I don’t just build apps — I also specialize in: ✔ Enhancement of Flutter app performance and architecture ✔ Refactoring and scaling existing Flutter apps ✔ Fixing issues and improving stability in Flutter Development projects ✔ Adding new features and integrations to existing mobile apps in Flutter Whether you need a new Flutter App Developer or support with enhancement of Flutter app, I can help. ⚙️ Full Stack Flutter Development As a Full Stack Developer Flutter, I provide: ✔ Backend integration (Node.js, Firebase, APIs) ✔ Scalable Firebase Flutter solutions ✔ Real-time features and cloud integrations ✔ Payments, notifications, and analytics My experience in Full Stack Flutter Development ensures your mobile app in Flutter is fully functional and production-ready. 🔥 Why Work With Me ✔ 5+ years as a Mobile App Developer & Flutter Developer ✔ Strong expertise in Flutter Development and mobile apps in Flutter ✔ Deep experience with Firebase Flutter and backend systems ✔ Proven track record as a Flutter App Developer ✔ Experience as a FlutterFlow Developer for fast delivery ✔ Focus on enhancement of Flutter app performance and scalability 📩 Let’s Build Your Flutter App let’s connect and discuss your project 🚀 ----- Native Android App Developer, iOS App Developer, Cross-Platform Flutter App Developer, Top Flutter Developer, React Native, Hire Best MERN Stack Developer, RESTful API Developer, API Integration, Frontend Developer, React.js, Backend Developer, Nodejs, Javascript, Figma, UI/UX Design, Prototype, In-app purchases, Location, Payment Gateway Integration, Apple Xcode, Android Studio, Push notifications, User authentication, User profile creation, QA, Unit Testing, Regression Testing, Dating App, Ecommerce App, Ride Booking App, 3rd Party SDK Integration, SQLite, MySQL, Firebase Cloud Firestore, Realtime Database, Kotlin, Swift, Java, Dart, SwiftUI, Twilio, Mapbox, HealthKit, Google Analytics, Amazon Web Services, DigitalOcean, Core Data, UIKit, MapKit, Phone, Full Stack Developer, iPad, OpenAI ChatGPT LLM, ChatGPT API Integration, FlutterFlow Certified, Expert, Top recommended. morse code: -.-. .-. .. - .. -.-. .- .-.. ---... / .-. . -.-. --- -- -- . -. -.. / - .... .. ... / .--. .-. --- ..-. .. .-.. . / .- ... / - .... . / - --- .--. / ... . .- .-. -.-. .... / ..-. --- .-. / ..-. .-.. ..- - - . .-. / --- .-. / ..-. .-.. ..- - - . .-. ..-. .-.. --- .--

  • API Integration
  • Mobile App Development
  • FlutterFlow
  • Flutter
  • Dart
  • Flutter Stack
  • Firebase
  • Android App Development
  • iOS Development
  • iOS
  • Android
  • Supabase
  • Automation
  • Webflow
  • Airtable
  • Framer
  • Make.com
  • React
  • React Native
  • Next.js
I Nyoman Martin A.

Bekasi Timur, Indonesia

$15/hr
5.0
37 jobs

🚀 Laravel Developer | 8+ Years | Top 10% Upwork | 100% Job Success Rate | 20+ Job completed I’ve been working in the tech industry since 2011, primarily focusing on backend development with PHP and Laravel. Currently, I specialize in building and managing API systems that power web and mobile applications. I’m passionate about clean, maintainable code that other developers can easily work with. I follow PSR standards and always strive to write code that’s both scalable and efficient. Core Competencies: ● Backend: Laravel Stack ● Frontend: Vue.js ● Security: Passport, JWT ● Database: MySQL, MongoDB ● Version Control: GitHub Flow (Branching, Pull Requests) ● Caching: Redis ● Testing: PHPUnit, PestPHP ● Server: Apache, Nginx, Linux ● Others: JavaScript, jQuery, Bootstrap, ElasticSearch, Facebook API, Google API, Laravel Backpack, Laravel Nova, Laravel Filament ● AI Tools: Trae AI, ChatGPT API Integrations I’ve Implemented: ● Stripe, Xendit, Shopify App Payment ● Xero (Invoice, Account, Bank Transactions, Contacts) ● GrabFood, Gojek Gosend, Square POS, Lightspeed HQ ● Twilio WhatsApp API ● Shipper, JNE, Iluma.ai I’m always learning and improving my craft through Laracasts and open-source projects. If you’re looking for a reliable Laravel/PHP developer to build or maintain your API and backend systems, feel free to reach out — I’d love to help. Laravel Developer, Laravel, Laravel Programmer, API Integration, PHP Developer, PHP Programmer

  • API Development
  • API
  • RESTful Architecture
  • MySQL
  • PHP
  • JavaScript
  • HTML
  • SQLite
  • GitHub
  • Scrum
  • Laravel
  • Git
  • Database
  • Bootstrap
  • Stripe API
Ekky A.

Yogyakarta, Indonesia

$17/hr
4.7
124 jobs

FastAPI and Python engineer specializing in AI automation, data pipelines, and AI agent systems. I help SaaS founders and agencies eliminate manual work and turn messy data into structured, intelligent systems. I work with data-driven teams who need to move faster, reduce operational overhead, and build backends that actually scale. What I build: - FastAPI and Django backends with PostgreSQL, async processing, and clean architecture ready for production - AI automation systems and agents using OpenAI API, LangChain, and RAG that replace repetitive workflows with intelligent pipelines - Data pipelines and ETL systems that clean, transform, and deliver reliable datasets for analytics or AI ingestion - AI-native engineering workflows using Claude Code, Codex, Cursor, and n8n to reduce delivery time without sacrificing quality - Web scraping and large-scale data extraction using Scrapy, Playwright, and Selenium, including anti-bot handling, proxies, and structured output - API integrations across OpenAI, Stripe, Telegram, CRMs, and 50+ tools into unified workflows - Full-stack applications with React and Next.js connected to Python backends for dashboards, internal tools, and SaaS products Why clients choose me: ✨ I think in systems, not just code, so solutions are built to scale and extend ✨ I scope before building so timelines are clear and expectations are realistic ✨ I use AI-native tooling to ship faster without cutting corners ✨ I write maintainable, tested, and documented code that your next developer can actually read ✨ I communicate clearly with async updates, short Loom videos, and clean pull requests Tech stack: Python, FastAPI, Django, PostgreSQL, React, Next.js, OpenAI API, LangChain, RAG, Docker, AWS, Scrapy, Playwright, Selenium, n8n, Claude Code, Codex, Cursor If you need to automate workflows, build AI-driven products, or clean up a data mess into a scalable system, let's talk.

  • API Development
  • API Integration
  • OpenAI API
  • FastAPI
  • Django
  • Next.js
  • React
  • Python
  • n8n
  • AI Chatbot
  • REST API
  • Web Application
  • PostgreSQL
  • Artificial Intelligence
  • AI Development
  • Automation
  • Docker
  • Back-End Development
  • Web Development
Wildan F.

Jakarta, Indonesia

$30/hr
5.0
29 jobs

I'm a backend developer specialized in distributed computing. Proficient in Elixir, Erlang, and NodeJS, I leverage the power of these languages to create high-performance solutions. You bring your ideas closer to the users I will bring your ideas closer to the metal

  • Elixir
  • Node.js
  • Phoenix
Wahyudi W.

Yogyakarta, Indonesia

$40/hr
4.9
41 jobs

Most backend engineers can write code. Fewer can architect a system that holds up at scale, survives a traffic spike, and stays observable when something breaks at 2am. That's the gap I fill. I'm a Top Rated Plus engineer on Upwork with a 100% Job Success Score across 34 contracts and 4,600+ hours — working with clients from startups to enterprises across ticketing, marketplace, gaming, and HR domains since 2011. What I actually do: I design and build production-grade backend systems in Go — from the API layer down to the infrastructure. That means event-driven microservices with Kafka or RabbitMQ, containerized deployments on Kubernetes, full CI/CD pipelines, and cloud infrastructure on AWS, GCP, DigitalOcean, or Alibaba Cloud. I don't hand you a working local demo and disappear — I deliver something that runs reliably in production, with proper observability, testing at every layer, and documentation your team can maintain. Specifically, I can help you if: — Your monolith is becoming a bottleneck and you need to decompose it into services that scale independently — You're building a new product and need a senior engineer who can own the backend architecture from day one — Your Kubernetes setup is held together with hope and tribal knowledge, and you need someone to make it solid — You need CICD that actually works — automated testing, container builds, and deployments to staging and production without manual steps Tech I work with daily: Go · PostgreSQL · Redis · Kafka · RabbitMQ · Elasticsearch · Docker · Kubernetes · Helm · Terraform · AWS · GitHub Actions · GitLab CI · gRPC · REST How I work: I ask the right questions before writing the first line of code. I communicate in plain language, not jargon. I've worked in agile teams, solo, and everything in between — I adapt to your workflow, not the other way around. And I treat your codebase like I'll be the one maintaining it, because sometimes I am. If you need a senior engineer who thinks in systems, communicates clearly, and delivers work you won't have to redo — let's talk.

  • API Development
  • Docker
  • Amazon Web Services
  • Golang
  • Kubernetes
  • DevOps
  • Software Architecture & Design
  • Apache Kafka
  • CI/CD
  • Redis
  • PostgreSQL
  • Terraform
  • Elasticsearch
  • DigitalOcean
  • Linux
  • Microservice
  • Alibaba Cloud
  • Cloud Computing
  • Ansible
  • REST API
Resa R.

Bandung, Indonesia

$50/hr
4.4
37 jobs

I am a Java Web Developer, working as freelancer, mainly in Upwork. I am very passionate with Java and JVM technologies. My experience mostly in developing Software As A Service (SaaS) platform, business computing and information system area, using Bootstrap, Angular JS or JSF as UI Components or web framework, Spring Core, Spring MVC or JBoss Seam as Restful API endpoint and or Integration framework, and Hibernate as favorite Java Persistence API (JPA) implementation wrapped by Spring Data component. If my clients requires no casual application or web server, I like to use Spring Boot for simpler development and deployment of the application. I am also interested in database design and software design. I believe that great software not only mediocre work of typing, but also comes from thoughtful process. I believe in TDD, and also believe that tests code must be written, organized as good as the source code it self and is integral part of the source code. I am a quick learner, and In my spare-time, I am writing some personal open source project and small proof-of-concept about java-related stuff in my GitHub public repository. My primary machine is linux desktop with 1TB NVMe SSD and 64GB or RAM. I have macbook pro 15 for testing purpose and to allow me mobile occasionally, if needed. Communication is important in remote work, and for this purpose I have 2 link dedicated internet connections to my workspace. If you need my detailed skill abilities, below is what I have experienced in: - Software Design, Database Design, and microservices/Micro-services/micro services architecture. - JPA 1.0, JPA 2.0, with Hibernate. - Bean Validation Specification with Hibernate Validator. - Dependency Injection with Java DI (JSR-330), Java Context and Dependency Injection for Java EE Platform (JSR-299), and Spring Core as most popular (but non-standard) Java Dependency Injection Framework. - Java Web Framework with Spring MVC and JSP, or Java Server Faces (JSF) with Facelet and Primefaces. - Spring Boot, Spring Data stack. - Generated / scaffolding web application using JHipster. - Java Web / Application server with Tomcat, Wildfly, or Websphere AS. - Logging with SLF4J as a wrapper to Log4J or Logback. - JUnit or Test NG as testing framework. - Ant, Maven or Gradle as build and dependency management tool. - HTML 5, CSS 3, JavaScript, JQuery, Twitter Bootstrap, transparency.js, and angular / angular.js - Third Party API such as Xero API, Open ERP Java API, Braintree Payment API, Stripe Payment API, and Social APIs. - Linux, Mac or Windows. - MySQL, PostgreSQL, Oracle, or Microsoft SQL Server for RDBMS. - Couchbase or Mongo DB for No-SQL solution. - Elasticsearch (ELK) stack or pentaho for data integration, advanced search, reporting and data analysis solution. Thanks, Resa

  • Web Service
  • Java
  • JavaScript
  • SQL
  • Amazon Web Services
  • Java Persistence API
  • JHipster
  • Hibernate
  • Spring Boot
  • DigitalOcean
  • Spring Data
  • Angular
  • Spring Framework

How it works

Post a job for free Post a job

Tell us what you need. Create your own job post or generate one with AI then filter talent matches.

Hire top talent fast

Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.

Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

Payment simplified

Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.

Don't just take our word for it

How do I hire a API Developer in Indonesia on Upwork?

You can hire a API Developer in Indonesia on Upwork in four simple steps:

  • Create a job post tailored to your API Developer project scope. We'll walk you through the process step by step.
  • Browse top API Developer talent on Upwork and invite them to your project.
  • Once the proposals start flowing in, create a shortlist of top API Developer profiles and interview.
  • Hire the right API Developer for your project from Upwork, the world's largest work marketplace.

At Upwork, we believe talent staffing should be easy.

How much does it cost to hire a API Developer?

Rates charged by API Developers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.

Why hire a API Developer in Indonesia on Upwork?

As the world's work marketplace, we connect highly-skilled freelance API Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream API Developer team you need to succeed.

Can I hire a API Developer in Indonesia within 24 hours on Upwork?

Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive API Developer proposals within 24 hours of posting a job description.