Hire the Best API Developers Near San Diego

Toptal is a marketplace for top remote API developers. Top companies and start-ups in San Diego choose Toptal API freelancers for their mission-critical initiatives.

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View Haitham

Haitham Gad

Freelance API Developer

United States

Toptal Member Since July 15, 2022

Haitham is a technical leader with over 15 years of experience building products and services for several enterprises. Before starting his AWS consultancy, he spent over five years at AWS, where he helped build Amazon GuardDuty, AWS's intelligent threat detection and security monitoring service. Haitham's work was instrumental in accelerating GuardDuty's adoption by thousands of AWS customers like Snap, HBO Max, Siemens, Volkswagen, and Southwest Airlines.

API AWS Python Node.js TypeScript AWS IAM Java C++AWS Cloud AWS Lambda Amazon S3 Amazon API Application Security

View Dmytro

Dmytro Korobov

Freelance API Developer

United States

Toptal Member Since April 21, 2023

Dmytro is an experienced Android developer skilled in Kotlin, Java, and MVVM. He stays on top of Android's latest trends and best practices and utilizes design principles and Material Design guidelines. Dmytro excels in back-end engineering and is passionate about creating efficient and effective server-side logic. His programming and data management expertise enables him to develop high-quality software solutions that meet business needs.

API Android Android SDK Java Kotlin MVVM Espresso GitHub Back-end Developers Firebase

View Pedro

Pedro Solá

Freelance API Developer

Mexico

Toptal Member Since May 23, 2022

Pedro is an experienced full-stack engineer and tech lead. He is very comfortable in the fast-paced world of startups and consulting. Pedro has worked on everything, from building prototypes to systems design, scaling platforms, and handling large-scale data migrations. From back end, front end, or mobile, he's done it all.

API React.js TypeScript JavaScript Node.js PostgreSQL GitHub Git Jest Sass Next.js Back-end Developers Front-end

View Jay

Jay Brown

Freelance API Developer

United States

Toptal Member Since October 7, 2019

With over 25 years of software development experience, Jay has focused on designing and building enterprise back-end and mid-tier applications, protocols, and APIs for Fortune 1000 companies. He has multiple US patents, has authored the Manning book on Apache OpenCMIS API development, and has presented technical subjects at several IBM international conferences. Jay currently designs and builds distributed systems with Go for his various clients.

API Go REST API Distributed Systems Development Back-end Developers

View Marcus

Marcus Young

Freelance API Developer

United States

Toptal Member Since June 19, 2024

Marcus is a senior engineering leader with 15+ years of overall experience and 7+ years of experience leading back-end software development. As a staff software engineer in the fintech industry, he focused primarily on building cloud-native distributed systems and AI/ML pipelines to facilitate loan origination, payments, and fraud detection. Having recently worked on LLM-backed systems, he is looking forward to tackling the challenges associated with deploying and supporting LLMs in production.

API Go FastAPI Spring Boot Ruby on Rails Python Java Back-end Developers Ruby Integration Microservices Development

View Alex

Alex Katkova

Freelance API Developer

United States

Toptal Member Since July 13, 2022

Alex is a senior Ruby on Rails developer with extensive experience building APIs, working with and extending 3rd-party integrations, and building proof-of-concept software. Alex is pragmatic and detail-oriented, leverages the right tools for the job, and delivers projects on time.

API Ruby on Rails Ruby GitHub REST API Back-end Developers API Integration RSpec Sidekiq Ruby on Rails Consultant Redis Code Review SaaS

View Michael

Michael Truog

Freelance API Developer

United States

Toptal Member Since April 4, 2016

Michael is a top architect, engineer, developer, and entrepreneur with a proven ability to develop efficient, scalable, and fault-tolerant server solutions for complex problems. He has extensive experience and skills with all levels of software and architecture.

API Erlang Git Go Distributed Systems Development PostgreSQL SQL Linux C++C Python Java Interim CTOs

View Eduardo

Eduardo Lopez

Freelance API Developer

United States

Toptal Member Since June 11, 2024

Eduardo is a full-stack developer with 5+ years of experience in JavaScript, specializing in React, Node.js, NestJS, and TypeScript. He also has expertise in Flutter, Laravel, Express.js, and Next.js. With an antifragile mindset, Eduardo adapts and remains resilient, fostering a high-performance culture, blending technical and strategic expertise, and applying best practices and optimization techniques. After revamping a legacy system—he cut load times by half and boosted user engagement by 30%.

API JavaScript TypeScript React.js Express.js Node.js REST API Flutter PHP Full-stack Next.js API Integration Dart

View Zackary

Zackary Wika

Freelance API Developer

United States

Toptal Member Since June 30, 2021

For over a decade and hundreds of projects, Zackary Wika has specialized in all things WordPress. His development process has a strong emphasis on accessibility, SEO, security, optimization, custom themes, custom plugins, custom blocks, 3rd-party API integrations, and WordPress-related conversions. Zackary has helped marketing teams launch new products, businesses go through a brand refresh, development teams establish best practices, and so much more.

API Slack Development CodeKit Web Development BrowserStack WordPress Development UX Development HTML5 CSS Sass JavaScript jQuery React.js

View Brian

Brian Weber

Freelance API Developer

United States

Toptal Member Since May 23, 2024

Brian is a principal engineer with a solid architectural and development background in enterprise data management, services, and mobile development. With expertise in data and application security, Brian has worked with many Fortune 100 companies to achieve their technology objectives. Brian specializes in automating and verifying large-scale cloud application integration and cloud data migrations across varied data sources in high-availability scenarios and business continuity.

API Oracle Development Linux Windows Development MongoDB Java C#JavaScript SQL Apache Kafka iOS Android Angular

View Charles

Charles Grady

Freelance API Developer

United States

Toptal Member Since September 26, 2022

Charles is primarily a back-end developer specializing in Python. He has more than 16 years of experience developing RESTful APIs, high-throughput computations, and cluster interfaces in an open source environment. Charles published papers, gave conference presentations, and taught domestic and international workshops showcasing the tools he created, the community infrastructure, and his research projects.

API Python NumPy Algorithms GIS Freelance Programming Object-oriented Programming API Integration REST API Back-end Developers Data Structures Unit Testing API Specialist

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A Hiring Guide

Guide to Hiring a Great API Developer

API developers are experts in crafting virtual bridges that enable the smooth flow of data between disparate systems. This guide to hiring API developers features best practices for the hiring process, job description tips, and interview questions and answers that will help you identify the right candidates for your company.

Read Hiring Guide

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Testimonials

Tripcents wouldn't exist without Toptal. Toptal Projects enabled us to rapidly develop our foundation with a product manager, lead developer, and senior designer. In just over 60 days we went from concept to Alpha. The speed, knowledge, expertise, and flexibility is second to none. The Toptal team were as part of tripcents as any in-house team member of tripcents. They contributed and took ownership of the development just like everyone else. We will continue to use Toptal. As a startup, they are our secret weapon.

Brantley Pace

CEO & Co-Founder

I am more than pleased with our experience with Toptal. The professional I got to work with was on the phone with me within a couple of hours. I knew after discussing my project with him that he was the candidate I wanted. I hired him immediately and he wasted no time in getting to my project, even going the extra mile by adding some great design elements that enhanced our overall look.

Paul Fenley

Director

The developers I was paired with were incredible -- smart, driven, and responsive. It used to be hard to find quality engineers and consultants. Now it isn't.

Ryan Rockefeller

CEO

Toptal understood our project needs immediately. We were matched with an exceptional freelancer from Argentina who, from Day 1, immersed himself in our industry, blended seamlessly with our team, understood our vision, and produced top-notch results. Toptal makes connecting with superior developers and programmers very easy.

Jason Kulik

Co-Founder

As a small company with limited resources we can't afford to make expensive mistakes. Toptal provided us with an experienced programmer who was able to hit the ground running and begin contributing immediately. It has been a great experience and one we'd repeat again in a heartbeat.

Stuart Pocknee

Principal

How to Hire API Developers Near San Diego

Talk to One of Our Industry Experts

A Toptal director of engineering will work with you to understand your goals, technical needs, and team dynamics.

Work With Hand-Selected Talent

Within days, we'll introduce you to the right API developer for your project. Average time to match is under 24 hours.

The Right Fit, Guaranteed

Work with your new API developer for a trial period (pay only if satisfied), ensuring they're the right fit before starting the engagement.

Tap Into World-Class Talent

Trusted Experts Only
All of our talent are seasoned experts who ramp up quickly, readily contribute as core team members, and work with you to minimize onboarding time.
The Right Fit
We have a knack for matching you with the right fit. Start working with your new hire on a no-risk trial period, paying only if satisfied.
Scale as Needed
Hire talent within 48 hours and scale your team up or down as needed, no strings attached.
Seamless Hiring
We handle all aspects of billing, payments, and NDA’s. Let us take care of the overhead while you focus on building great products.
Flexible Engagements
Choose the engagement type that suits your needs — hourly, part-time, or full-time — with the ability to change anytime.
Expert Talent Matching
Focus on your project and enjoy support from your dedicated account executive and expert talent matcher.