java web developer jobs in New York

About Datadog: We’re on a mission to build the best platform in the world for engineers to understand and scale their systems, applications, and teams. We operate at high scale—trillions of data points per day—providing always‑on alerting, metrics visualization, logs, and application tracing for tens of thousands of companies. Our engineering culture...

Role Overview We are looking for a Senior Software Engineer who is both a strong systems engineer and an AI-native builder. You should have exceptional programming fundamentals, deep experience shipping production software, and extensive hands-on experience using AI coding tools and agents as part of your core development workflow. This role is focused on...

Company DescriptionEROS Technologies was founded with a simple motive of offering the clients exactly what they want, how they want and when they want it. By leveraging for its clients its technological edge and right-sourcing advantage, EROS in a short period of time has grown to become one of the most trusted strategic technology partners. Treating every...

Senior Software Engineer (Data) - $150k - $250k Base ($200k - $400k TC) – NYC/ Chicago/ London (Hybrid) – Prop Trading We are currently partnered with a leading global proprietary trading firm seeking an experienced Senior Software Engineer (Data) to join their growing technology function in Chicago, NYC or London. The successful candidate will work...

To be successful in this role, candidates should demonstrate:Strong expertise in designing and developing low-latency, high-throughput backend systems using Java, with experience implementing event-driven architectures leveraging Kafka or similar messaging technologies.Deep understanding of real-time stream processing concepts, including event ordering,...

We are a specialized technology staffing agency supporting professional and financial services companies. Why do we stand out in technology staffing? We listen and act as advisors for our candidates on how they can best add value, find interesting projects, and pave a path for career advancement. We advocate for best pay, diversity in tech, and best job-fit...

Backend Engineer Reporting to the CTO of the company, you will have responsibility for building and monitoring backend services at scale. You will work on building and optimizing a state-of-the-art data pipeline, which processes millions security events, machines, and plenty of other assets! If you're excited about building and delivering impact to...

Blink Health is the fastest growing healthcare technology company that builds products to make prescriptions accessible and affordable to everybody. Our two primary products - BlinkRx and Quick Save - remove traditional roadblocks within the current prescription supply chain, resulting in better access to critical medications and improved health outcomes for...

OXMAN is a nature-based research and design company based in Manhattan. We incubate ventures and technologies that reimagine the relationship between humanity and the natural world. Working across disciplines-from architecture and ecology to computation and materials science-we develop nature-centric solutions to critical environmental challenges. EDEN is a...

This is a chance to put large language models into production at federal scale. Our client, a leading defense and technology contractor, is adding LLM and agentic AI capabilities to enterprise Java applications that serve millions of people. We are looking for a senior Java engineer who has already built and supported this kind of integration, not just...

About The Company Valon is building the AI-native operating system for regulated finance, starting with mortgage servicing. About The Company Valon is building the AI-native operating system for regulated finance, starting with mortgage servicing. Rather than build on top of broken legacy systems, we took a different approach: we built and operate our own...

Looking for a Senior Software Engineer contractor to join the Product, Network, and AI team. You'll help build and scale supplier payment automation capabilities for our Supplier Payments Plus (SPP) platform, supporting reliable experiences across millions of transactions. What You'll Do Design, build, and maintain scalable backend services and payment...

Senior Software Engineer Trayd is solving the oldest problem in America: how do we build physical infrastructure that lasts generations? We're replacing manual processes and legacy systems with AI-native software built around how construction actually runs. Companies using our software have built some of America's greatest infrastructure projects like the...

Senior Software Engineer Diode Computers, Inc. is looking for a senior software engineer to help us fix circuit board design and manufacturing. The team has shipped real hardware at Apple, Anduril, and several med-tech startups; now we're focusing our attention on helping others build hardware better. Our customers include some of the biggest names in...

After decades of managing tens of thousands of people, we've seen firsthand how traditional HR and management tools have failed to deliver real transformation. While nearly every aspect of work has evolved dramatically over the past 50 years, the way companies are managed has remained stuck in the past. We're building the AI management system that will...

Entarian is seeking a Senior Software Engineer for the Commander, Naval Meteorology and Oceanography Command (CNMOC) Data Dissemination SBIR Information Technology Solutions Project. This role will bring strong systems, software, cloud, and SAFE/Agile experience to provide technical expertise on a mission-critical program whose purpose is to develop,...

Rho is the modern banking platform built for startups. Open accounts in minutes, issue cards, manage expenses, pay bills, and close the books - all in one connected platform backed by real human support. As a Senior Software Engineer at Rho, you'll build the financial infrastructure powering the next generation of founders. You'll move across the stack, own...

5+ years of professional software engineering experience\n- Strong C# experience\n- .NET Core / ASP.NET Core experience\n- REST API and backend service development\n- Production service ownership and operational support\n- Azure experience (AWS experience also considered valuable)\n- CI/CD pipeline experience\n- System design and architecture...

About Kontakt.io Inside health systems, where every second can matter, operations are still spread across dozens of disconnected tools and platforms. Kontakt.io is changing that. We combine proprietary hardware, AI-powered intelligence, and deep integrations with the technology health systems already have in place to build real-time understanding of what's...

Roboflow Roboflow is building the visual cortex for AGI. Every day, millions of developers and half of the Fortune 100 use Roboflow to count cells to accelerate cancer research, improve construction site safety, digitize floor plans, preserve coral reef populations, guide drone flight, and much more. We have built the tools, community, and resources needed...