21 Best Mid Level Senior Back End React JS JSON Postgres (PostgreSQL) SQL Freelance Developers For Hire In July 2024

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selected:

Mid Level [ x ] Senior [ x ] Back End [ x ] React JS [ x ] JSON [ x ] Postgres (PostgreSQL) [ x ] SQL [ x ] freelance [ x ]

framework:

+ Express JS (20) + Next JS (17) + Sencha Ext JS (17) + Angular JS (11) + jQuery (10) + Vue JS (9) + React Native (7) + D3 JS (6) + Nest JS (6) + Svelte JS (5)

language:

+ TypeScript (19) + Vanilla JS (16) + JavaScript (14) + Python (11) + PHP (7)

utility:

+ Redux JS (5)

ui:

+ CSS (12) + EJS (6) + Tailwind CSS (5)

career:

+ CTO (7) + Junior (6) + Manager (6)

stack:

+ Front End (18)

db:

+ MongoDB (17) + MySQL (15) + Redis (9)

server:

+ AWS (15) + docker (11) + Linux (7) + Amazon SES (5) + Google Cloud (5)

program:

+ Git (16) + Jira (7) + Prisma (5)

concept:

+ HTML (11) + OOP (9) + api (8) + mobile app (8) + software (7) + database (6) + Rest API (5) + unit testing (5)

speaking:

+ Spanish (5)

worker type:

+ full time (20) + contractor (19)

country:

+ United States (5)

country region:

+ North America (7) + South America (5)

Filters:

selected:

Mid Level [ x ] Senior [ x ] Back End [ x ] React JS [ x ] JSON [ x ] Postgres (PostgreSQL) [ x ] SQL [ x ] freelance [ x ]

framework:

+ Express JS (20) + Next JS (17) + Sencha Ext JS (17) + Angular JS (11) + jQuery (10) + Vue JS (9) + React Native (7) + D3 JS (6) + Nest JS (6) + Svelte JS (5)

language:

+ TypeScript (19) + Vanilla JS (16) + JavaScript (14) + Python (11) + PHP (7)

utility:

+ Redux JS (5)

ui:

+ CSS (12) + EJS (6) + Tailwind CSS (5)

career:

+ CTO (7) + Junior (6) + Manager (6)

stack:

+ Front End (18)

db:

+ MongoDB (17) + MySQL (15) + Redis (9)

server:

+ AWS (15) + docker (11) + Linux (7) + Amazon SES (5) + Google Cloud (5)

program:

+ Git (16) + Jira (7) + Prisma (5)

concept:

+ HTML (11) + OOP (9) + api (8) + mobile app (8) + software (7) + database (6) + Rest API (5) + unit testing (5)

speaking:

+ Spanish (5)

worker type:

+ full time (20) + contractor (19)

country:

+ United States (5)

country region:

+ North America (7) + South America (5)

Timezone:

(includes +1/-1 hour)

Featured Mid Level Senior Back End React JS JSON Postgres (PostgreSQL) SQL Freelance Developers

1 to 20 of 21 devs ( view all 1414 devs )

Senior Web Developer

Orlando, Florida, US or remote

Worked on several SaaS products in PHP, JavaScript, and TypeScript. Created custom SaaS Dashboard using the Yii PHP framework with a MySQL database....

Mid Level Senior Back End React JS JSON Postgres (PostgreSQL) SQL freelance react node typescript angular

Senior Frontend Software Engineer

Bronx, New York, US or remote

JOCKMKT | Senior Frontend Engineer | Remote | Nov 2022 - Oct 2023 - Developed and Maintained JockMKT’s React Native and NextJS web applications -...

Mid Level Senior Back End React JS JSON Postgres (PostgreSQL) SQL freelance react node typescript jquery

Senior Full Stack Developer

San Clemente, California, US or remote

Software Engineer at Camping World September 13th 2021 Remote Duties: • Developed a new API service endpoint responsible for the secure...

Mid Level Senior Back End React JS JSON Postgres (PostgreSQL) SQL freelance react node angular vue

Fullstack Software Engineer

Recife, Pernambuco, Brazil or remote

GreenFutureProject - Fullstack Software Engineer (Milan, Italy: May.2023 ‑ Current) • Worked on the global engineering team on the Green Future...

Mid Level Senior Back End React JS JSON Postgres (PostgreSQL) SQL freelance react node typescript angular

Full Stack Developer

Brighton, United Kingdom or remote

- Designed, developed, and launched a SaaS startup offering digital business cards that integrate with Apple & Google Wallet. - Led a team of...

Mid Level Senior Back End React JS JSON Postgres (PostgreSQL) SQL freelance react node typescript vue

Software Engineer with 10Y Experience

Vancouver, BC, Canada or remote

Eduardo C. Garza is a skilled tech professional with extensive experience in software engineering, operations management, and product development. He...

Mid Level Senior Back End React JS JSON Postgres (PostgreSQL) SQL freelance react node typescript angular

Software Engineer

São Paulo, São Paulo, Brazil or remote

Result-driven Software Developer with 15+ years of experience. Highly skilled in PHP and JavaScript. Passionate about software architecture and clean...

Mid Level Senior Back End React JS JSON Postgres (PostgreSQL) SQL freelance react node typescript angular

Full Stack Web & Mobile Developer

Karachi, Sindh, Pakistan or remote

Trth.Ai Successfully configured a GCP account, implementing key services such as Cloud Storage, Firestore, Function, and PubSub for optimal platform...

Mid Level Senior Back End React JS JSON Postgres (PostgreSQL) SQL freelance react node typescript vue

Deloitte, Ex Ford - Senior Software Developer

Chennai, Tamil Nadu, India or remote

Engineer 1 April 2022 - Present Deloitte Senior Software Developer for Digital Tester Application in the Product Engineering Division Successfully...

Mid Level Senior Back End React JS JSON Postgres (PostgreSQL) SQL freelance react node typescript angular

Back End Engineer

São Paulo, São Paulo, Brazil or remote

Papaya Apr 2023 – Sep 2023 Back End Engineer Los Angeles, CA, USA ▪ Delivered features for product launches and new internal tooling to improve...

Mid Level Senior Back End React JS JSON Postgres (PostgreSQL) SQL freelance node typescript mongodb json

Fullstack Developer

Goiania, GO, Brazil or remote

I'm a software developer with over 7 years of experience in the development of mobile and web...

Mid Level Senior Back End React JS JSON Postgres (PostgreSQL) SQL freelance react node typescript vanilla js

Fullstack Engineer

Pune, India or remote

As a full-stack developer with four years of experience, I have worked with multiple early-stage startups and gained leadership experience. I am...

Mid Level Senior Back End React JS JSON Postgres (PostgreSQL) SQL freelance react node typescript angular

Senior Frontend Developer

Bangalore, India or remote

It seems like I am going to be the first international hire ! As a senior frontend developer, I have worked extensively in HTML / CSS / Javascript...

Mid Level Senior Back End React JS JSON Postgres (PostgreSQL) SQL freelance react node typescript angular

Software Engineer

Culiacan, Sinaloa, Mexico or remote

10+ years of experience with web apps. Always looking to learn new things and being able to come up with efficient solutions to any business problem....

Mid Level Senior Back End React JS JSON Postgres (PostgreSQL) SQL freelance react node typescript nextjs

Senior Full Stack Developer

Tbilisi, Tbilisi, Georgia or remote

Senior Full Stack Developer S-Pro Kiev, Ukraine Jun 2021 – Present • Spearheaded the development of https://www.sygnum.com/, enhancing...

Mid Level Senior Back End React JS JSON Postgres (PostgreSQL) SQL freelance react node typescript angular

Full Stack Developer

Nairobi, Nairobi, Kenya or remote

MICROVERSE Remote Full Stack Web Development Program, Full Time - Spent 1300+ hours mastering algorithms, data structures, and full-stack...

Mid Level Senior Back End React JS JSON Postgres (PostgreSQL) SQL freelance react node typescript vue

CTO / FullStack Developer

Tbilisi, Georgia or remote

Usually, I build MERN stack (MongoDB, Express, React, Node) + nextjs, koajs, AWS, and MySQL applications. I have advanced knowledge and experience in...

Mid Level Senior Back End React JS JSON Postgres (PostgreSQL) SQL freelance react node jquery vanilla js

Full Stack Developer

Buenos Aires, CABA, Argentina Republic or remote

Hey! I'm Manuel, a full-stack developer from Argentina. I focus on two things, fast pace of development and results. I like to ship fast and often. I...