Senior Software Engineer
Merrimack, NH
Type: Contract
Category: Development
Industry: Financial Services
Standard Hours: Open
Reference ID: JN -102026-108904
Date Posted: 10/04/2026
Shortcut: http://careers.eliassen.com/Kzk2wg
Description
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Description:
On-site Every Other Week / 5 days in Merrimack, NH
Our client seeks a Senior Software Engineer to design, build, test, deploy, and maintain customer-facing software within capital markets and brokerage technology. The role emphasizes TDD, continuous integration and delivery, engineering practices, and collaboration in Agile squads. You will drive test automation adoption, perform data analysis at scale, and deliver high-quality, maintainable solutions while coordinating with product, architecture, and partner squads.
Due to client requirements, applicants must be willing and able to work on a w2 basis. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.
Rate: $50.00 to $60.00/hr. w2
JN -102026-108904
Responsibilities:
Collaborate with product owners, squad leads, and architecture to influence platform improvements.
Design, develop, test, deploy, and maintain software with strong focus on TDD and CI/CD.
Adopt and enable test automation frameworks and practices across the squad.
Handle large datasets and perform data analysis and validation.
Build and consume RESTful services using Java, Python, and Spring.
Deliver solutions in Agile or Kanban environments with strong team collaboration.
Contribute to engineering practices including code, design, and test reviews, cloud strategy, and deployment pipelines.
Perform SQL and database validation, including comparisons across mainframe and AWS RDS.
Coordinate with other squads and chapters to align delivery.
Engage with business partners to understand the domain and refine requirements.
Experience Requirements:
5+ years of software development experience.
Proficiency in Java and Python, with Spring and RESTful services.
Experience with test automation frameworks, including Serenity Cucumber and Playwright.
Experience with Jira and Jira Align.
Agile or Kanban squad experience.
Strong SQL, system design, data structures, and algorithms knowledge.
Ability to analyze and validate millions of data records efficiently.
Experience with CI/CD pipelines and cloud and infrastructure concepts.
Experience working in financial services, including equities, options, or fixed income, is a plus.
Experience with KDB and modern UI frameworks such as React, Angular, or Vue is a plus.
Experience with AWS, ES6, React, or SASS is a plus.
Demonstrated analytical, communication, and organizational skills with ability to act independently under general direction.
Education Requirements: At least a bachelor's degree in Computer Science, Engineering, Information Technology, or equivalent.
Recruitment Transparency Notice
Eliassen Group values transparency in our recruitment practices. Please be advised that Eliassen Group utilizes artificial intelligence (AI) tools as part of its initial application screening and hiring process. You may receive email and SMS notifications from the Eliassen Virtual Recruiting Team ( noreply@eliassen.com , 781-808-2924) inviting you to complete a brief voice screening as part of your application process. These tools assist our hiring teams in different ways, including but not limited to, assistance in reviewing application materials to help identify candidates whose qualifications most closely match the requirements of the position. All AI-assisted evaluations and responses are reviewed by human recruiters before any hiring decisions are made. The use of AI in our process is intended to support fairness, efficiency, and consistency, and Eliassen Group takes measures to prevent bias or discrimination in connection with its hiring practices. By proceeding, you acknowledge, agree, and consent to Eliassen Group's use of these tools, including AI tools, as part of the application and hiring process.
Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.
W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.
If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:
· When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
· Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group.
If you have any indication of fraudulent activity, please contact fraud@eliassen.com _.
About Eliassen Group:
Eliassen Group is a strategic consulting firm that helps organizations reach further and achieve more through our technology, business advisory, and life sciences solutions. For nearly 40 years, we have combined exceptional people, deep domain expertise, and intelligent capabilities to expand our clients' capacity and accelerate meaningful outcomes. We are driven by a purpose to positively impact the lives of our employees, clients, consultants, and the communities we serve.
Eliassen is committed to building a diverse and inclusive team from a variety of backgrounds, perspectives, and skills. We are an Equal Opportunity and Affirmative Action Employer and all employment decisions are based on merit, performance, and business needs. Eliassen does not discriminate on the basis of race, color, gender identity or expression, sexual preference or orientation, sex (including pregnancy, childbirth, and related medical conditions), marital status, creed, religion, physical or mental disability, genetic information, military or veteran status, age, ancestry, national origin, citizenship status, prohibited criminal record inquiries of applicants and employees, or any other category protected by federal, state, or local laws.
Don't miss out on our referral program! If we hire a candidate that you refer us to then you can be eligible for a $1,000 referral check!_
