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Freelance Java Developer C2C Jobs in New York, NY

SysMind Tech

SQL/Python Developer

West New York, NJ · On-site

$54.50 - $75/hr

... hr on c2c monthly invoicing 45 payment terms each invoice Skills : Python, SQL, information ... This is just to understand existing Java code base) Role Desc: Hands-on engineer who can - Analyze ...

Conch Technologies Inc

Android Developer

New York, NY · On-site

$61 - $80.25/hr

Title: Android Developer Location : remote Type: 6+ months Note Only W2 No C2C Job Description ... Knowledge of Java for maintaining or migrating legacy codebases * Experience with Kotlin ...

Maverick Technology Partners

Mainframe Developer

Manhattan, NY · On-site

$54 - $69.50/hr

... NO C2C - Must be able to work in the US without sponsorship Our client in Pittsburgh has an immediate need for a COBOL CICS Developer. * Cobol, CICS, DB2 - mainframe to Java and AI (Copilot and ...

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How much do freelance java developer c2c jobs pay per hour?

As of Aug 7, 2026, the average hourly pay for freelance java developer c2c in New York, NY is $62.03, according to ZipRecruiter salary data. Most workers in this role earn between $53.65 and $69.42 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a freelance Java developer C2C?

To thrive as a Freelance Java Developer C2C, you need advanced proficiency in Java programming, object-oriented design, and experience with frameworks like Spring or Hibernate, usually complemented by a relevant degree or certifications. Familiarity with code repositories (Git), build tools (Maven/Gradle), cloud platforms, and knowledge of contract work requirements are important for handling diverse client projects. Outstanding time management, communication, and problem-solving skills set top freelancers apart in remote, client-focused environments. These skills ensure timely delivery of robust solutions, effective client relationships, and sustained success in a competitive freelance market.

What is a freelance Java developer C2C?

A Freelance Java Developer C2C (Corp-to-Corp) is an independent contractor who provides Java development services through their own corporation or business entity, rather than as a direct employee. In a C2C arrangement, the developer's company enters into a contract with a client company to deliver software solutions using the Java programming language. This setup is common in the United States and often used for project-based or temporary work, allowing both parties flexibility and clear business-to-business terms. Freelance Java Developers C2C are responsible for their own taxes, benefits, and business expenses.

What are the common challenges faced by freelance Java developers working on a C2C (Corp-to-Corp) basis, and how can they be managed?

Freelance Java Developers working on a C2C basis often encounter challenges such as managing multiple client projects simultaneously, ensuring clear communication despite remote collaboration, and staying updated with the latest Java technologies. Additionally, they must handle their own contracts, invoicing, and compliance with tax regulations independently. To manage these challenges effectively, it's important to establish transparent communication channels with clients, set clear project expectations and deadlines, and utilize project management tools to track progress. Regularly investing time in professional development and networking can also help freelancers stay competitive in the market.
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Freelance Java Developer C2C jobs near you
Infographic showing various Freelance Java Developer C2C job openings in New York, NY as of August 2026, with employment types broken down into 79% Full Time, 3% Part Time, and 18% Contract. Highlights an 81% Physical, 4% Hybrid, and 15% Remote job distribution, with an average salary of $129,021 per year, or $62 per hour.

Senior Software Engineer - Low Latency Trading Systems (Core Java)

Talent Solutions Group Inc

New York, NY • On-site

$136K - $180K/yr

Contractor

Medical, Dental, Vision, Life, PTO

Posted 4 days ago

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Job description

Senior Software Engineer – Low Latency Trading Systems (Core Java)

Chicago, IL or New York, NY | Hybrid (2 Days Onsite REQUIRED) | Long-Term Consulting Opportunity

Confidential Financial Services Client

No Third Parties | No C2C | No Visa Sponsorship


Build Technology That Powers High-Performance Trading

Our client is seeking an experienced Senior Software Engineer with deep expertise building ultra-low latency trading platforms.

This is not a traditional enterprise Java position.


We're looking for engineers who have built and supported mission-critical trading systems where microseconds matter. The ideal candidate understands market data, trading workflows, concurrency, networking, and performance optimization and can immediately contribute within a highly technical engineering team.

Candidates without recent low latency trading platform experience will not be considered.


What You'll Do

  • Design and develop ultra-low latency Java applications supporting electronic trading platforms
  • Build and optimize backend trading services and distributed microservices
  • Analyze and optimize application performance for high-throughput, low-latency environments
  • Troubleshoot complex production issues and performance bottlenecks
  • Optimize algorithms, memory utilization, JVM tuning, and threading models
  • Work closely with senior engineers on architecture, code reviews, and system optimization
  • Support production releases, security updates, and platform enhancements
  • Utilize low-level diagnostic tools to analyze system behavior and optimize performance
  • Develop clean, scalable, maintainable Java applications supporting mission-critical trading systems


Required Experience

  • 8+ years of Core Java software engineering
  • Recent experience developing low latency trading platforms
  • Experience supporting electronic trading or capital markets systems
  • Strong understanding of trading workflows and market data processing
  • Experience building backend trading applications—not database-centric applications
  • Strong understanding of distributed microservices architecture
  • Advanced knowledge of multithreading, concurrency, synchronization, shared memory, and asynchronous programming
  • Strong understanding of algorithms and data structures
  • Experience optimizing high-performance Java applications
  • Experience working with TCP/IP and UDP networking
  • Strong Linux experience
  • Self-starter capable of contributing immediately with minimal supervision


Technical Skills

Strong experience with:

  • Core Java
  • Low Latency Systems
  • Multithreading
  • Concurrent Data Structures
  • Shared Memory
  • JNI
  • Java NIO
  • TCP / UDP Networking
  • JVM Performance Tuning
  • Garbage Collection Optimization
  • Linux
  • Linux Kernel Performance
  • Microservices Architecture
  • Performance Profiling
  • Production Support

Preferred experience with:

  • Solarflare Networking
  • EF_VI
  • Onload APIs
  • Thread Pinning
  • NUMA Architecture
  • CPU Cache Optimization
  • Interrupt Handling
  • Packet Capture
  • Hardware Performance Counters


Trading Domain Experience Required

Candidates should have experience working with one or more of the following:

  • Electronic Trading Platforms
  • Matching Engines
  • Order Book Management
  • Market Data Processing
  • Trading Logic
  • Credit Checks
  • Order Routing
  • Market Connectivity
  • Exchange Connectivity
  • Capital Markets Technology


What We're Looking For

We're looking for an engineer who understands the unique challenges of building software where performance, determinism, and reliability are critical.

This is an opportunity to work on highly sophisticated trading technology alongside experienced engineers solving complex performance and scalability challenges.


Important Requirements

  • Hybrid schedule (2 days per week in the office)
  • Chicago or New York
  • Long-term consulting opportunity
  • Must have recent low latency trading platform experience
  • Must have financial services or capital markets experience
  • No Third Parties
  • No Corp-to-Corp (C2C)
  • No Visa Sponsorship


Company Description

We care about the success of each member of out team! We strive for long lasting partnerships where you can grow and expand your career.

Talent Solutions Group logo

About Talent Solutions Group

Sourced by ZipRecruiter

Talent Solutions Group is committed to providing organizations of all sizes and industries scalable human capital solutions. Since 2000, our team of experienced recruiters have connected employers with top talent, turning business goals into reality. We are built on a vast network of staffing industry mavericks capable of filling positions nationally for all industries. Administrative staff to Executives, our recruiters will take the time to understand your culture and technical requirements to provide the best possible candidate choices.

Industry

Recruiting and staffing services

Company size

11 - 50 Employees

Headquarters location

Chicago, IL, US

Year founded

2000

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