Demo

Senior Java Developer - NYC - Fintech

Adaptive
York, NY Full Time
POSTED ON 10/29/2026
AVAILABLE BEFORE 11/27/2026
WE ARE:

At Adaptive, we are a financial consulting firm that partners with capital, commodity, and digital market participants. We value differentiation through technology. Our experienced teams design and deliver complex front-office technology solutions using our proven accelerators to create long-term competitive advantage.

Our clients include the world’s leading investment banks, investment managers, fintechs and capital market service providers. With a global reach with offices in London, New York, Barcelona and Montreal, we have a proven track record delivering powerful, elegant and intuitive trading technology solutions.

We are expanding our product capability and looking for talented individuals to help build transformational capital markets products including:

  • Aeron - our flagship high-performance messaging infrastructure.
  • Hydra - our developer framework for accelerating the development and delivery of trading systems.
  • Artio - our market-leading open-source FIX engine.
  • Aeron Sequencer - replicated state machines at scale.

YOU ARE:

  • A great team player who loves sharing knowledge and learning from others
  • A problem solver with strong analytical skills
  • Excited about learning new things and keeping up to date
  • Happy to work in a test-driven and Agile development fashion

YOU HAVE:

  • Experience in Java server-side software development
  • Experience designing, building, debugging, and operating distributed systems
  • Experience designing and evolving messaging protocols
  • Experience designing and evolving software libraries
  • Experience applying various forms of testing to underpin software qualities, e.g., correctness and performance
  • Experience in measuring, benchmarking and profiling components and systems
  • Excellent communication skills, both written and verbal, with the ability to communicate technical concepts to non-technical stakeholders
  • Strong analytical and problem-solving skills.

YOU WILL:

  • Design and develop Java applications and libraries.
  • Write clean, efficient and well-documented code.
  • Troubleshoot and debug Java applications to ensure smooth performance.
  • Participate in code reviews to ensure code quality, maintainability, and reusability.
  • Keep up-to-date with emerging trends and technologies in Java development.
  • Pair with other team members to ensure high-quality outcomes.

WHY US:

  • To be immersed in high-standard engineering culture. Our fantastic team takes pride in crafting complex technical solutions but also loves sharing their knowledge and helping you grow professionally (we have extraordinary minds at Adaptive) You can learn from anyone here, which is the beauty of it
  • To take part in the growth and development of a great company
  • Our teams feel free to speak up, make suggestions and raise concerns.
  • Collaborative team environment: we all work together, respect each other, and pitch in
  • Great consideration for work/life balance (highly-flexible, hybrid working model, well-being benefits…). Balance between professional and personal life is massively important to us.
  • We work hard to provide a positive, collaborative and inclusive culture and to positively impact our staff and local communities through different well-being, diversity and inclusion programmes.

What People Think Of Us 🗣️

You can check our Glassdoor page :)

BENEFITS (What we offer in return // what you’ll get ):

For permanents: We create benefits with YOU in mind.

We create benefits with YOU in mind:

  • Flexible hybrid working model
  • Medical from the 1st of the following month of your start date (i.e. if you join on the 24th of July, it starts on the 1st of August). We have 6 Aetna plans to choose from as provided by our PEO, Justworks. We make a flat monthly contribution to your healthcare costs
  • Dental and vision from the 1st of the month following your start date - we have 3 dental and 2 vision plans to choose from. We make fixed contributions to each
  • 23 days of vacation per calendar year plus 11 public holidays
  • Group disability insurance: short-term and long-term (60% and taxable)
  • 401K safe harbor plan where we match contributions up to 5% of base pay on a paycheck-to-paycheck basis (you can opt-in after 90 days of service)
  • Gym subsidy of up to $50 per month (and we pay the taxes on that so it's a real $50) post probation
  • Life insurance at 2 x salary
  • Commuter benefits
  • Health Savings Account and Flexible Spending Account
  • Mental Health First Aiders

THE PROCESS

Long interview processes are stressful and boring and that is not us

We want to make sure that everything runs smoothly.

So here you will have three stage interviews:

1- A chat with one of our great recruiters.

2- A zoom chat with one of our Java colleagues where they will ask you detailed questions about Java knowledge and your experience.

3- A Face to Face interview (either in our office or via Zoom). During this interview, we will dig even deeper, and you will have a technical task to do. You will also have a chat with our local director.

A little tip for you during those stages:

Collaboration is massively important to us, so don't hesitate to share your thoughts, ask questions, ask for help if needed, etc :)

DIVERSITY & INCLUSION:

Diversity and inclusion are key to a great workplace, and Adaptive is better when it’s more representative of the world around us. We want everyone to feel comfortable bringing their whole selves to work without any fear of judgment or negativity.

All we ask is that our colleagues are respectful, collaborative, passionate about what they do, and have the skills needed to be successful in their roles.

Background check: the employment/engagement is subject to an acceptable background check that will be run by Adaptive.

E-verify: Adaptive Financial Consulting Inc. makes use of E-Verify to validate someone's right to work in the US. We will provide the Social Security Administration, and, if necessary, the Department of Homeland Security, with information from each new employee's Form I-9 to confirm work authorization. Please note that we do not use this information to pre-screen job applicants.

Base pay will be determined on an individualized basis and is only part of the total compensation package. Pay is based on candidate skills and experience.

New York pay range

$240,000—$260,000 USD

Salary : $240,000 - $260,000

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