Find the Best Senior Java Engineering Jobs in Brooklyn, NY
It takes just one job to develop a successful relationship that can propel your career forward.
Find workInterested in hiring?Trusted by
Check out a sample of the 10 Senior Java Engineering jobs posted on Upwork
Embedded Systems Engineer for Passenger Counting
Fixed-price ‐ Posted 12 days agoFixed-price
Experience level
We’re seeking an experienced embedded systems/computer vision engineer to develop a reliable passenger-counting system for electric tri…
Integrate Claude/OpenAI API into Existing App — Add Text Summariz…
Hourly ‐ Posted 16 days agoHours needed
Duration
Experience level
We have an existing web application and want to add a single AI-powered feature: a text summarizer. Users will paste or submit text, an…
Senior Java Spring Boot Developer Needed for Microservices, Keycl…
Hourly ‐ Posted 12 days agoHours needed
Duration
Experience level
We are looking for an experienced Java/Spring Boot backend developer to help with ongoing backend development, API work, microservices,…
Web App Development using Cursor/Claude
Hourly ‐ Posted 1 month agoHours needed
Duration
Experience level
I need someone to develop an amazon Fba related web app using cursor/claude. The ideal candidate should have low/beginner level dev exp…
Claude AI Enterprise Integration Developer
Hourly ‐ Renewed 1 month agoHours needed
Duration
Experience level
Join our family-owned janitorial supply distributor in Rahway, NJ, established in 1961. We are seeking an experienced developer to inte…
Financing Application Automation
Fixed-price ‐ Posted 14 days agoFixed-price
Experience level
Upwork job post Title: Financing Application Automation — API + Browser Automation (Healthcare, PII/BAA Compliance Required) Category…
Fractional CTO for Insurance Automation
Hourly ‐ Posted 14 days agoHours needed
Duration
Experience level
Get Logan Inc is a fast-growing US trucking insurance brokerage serving 10,000+ fleets across the US. We are building our automation ba…
Interactive 3D Front-End Developer (Three.js/WebGL)
Fixed-price ‐ Posted 20 days agoFixed-price
Experience level
Hi, I'm looking for a developer to create a simple, elegant interactive 3D web experience for a unique art and jewelry piece called th…
Full / Mern stack Developer Needed.
Hourly ‐ Posted 26 days agoHours needed
Duration
Experience level
This job is only open to independent Full-stack Developers. If you are associated with an agency, please don't bother applying. The Fu…
Senior Ecommerce & Systems Integration Development Team / Agency
Hourly ‐ Posted 14 days agoHours needed
Duration
Experience level
Senior Ecommerce & Systems Integration Development Team / Agency Magento 2 + React/.NET + Okta SSO + Enterprise Integrations Overview…
Want to browse more Senior Java Engineering jobs? Sign up
Your next job starts right here
Set up a free profile to showcase your skills, experience and desired pay rate to clients. You choose the payment method that's best for you to easily get paid for your work.
Find workGives you security and peace of mind