Senior/Principal Software Engineer
Merrimack, NH
Category: Development
Industry: Financial Services
Reference ID: JN -032026-106152
Date Posted: 03/25/2026
Shortcut: http://careers.eliassen.com/JNSosb
Description:
Hybrid Onsite 5 days/week, alternating weeks in either Manchester, NH, Irving, TX or Edison, NJ.
The Senior Software Engineer will develop, test, deliver, and support workflow-driven features that power client interactions on a platform. The role will collaborate with technical leads and product managers to translate complex business processes into robust, maintainable code using languages such as Python and JavaScript. The position requires strong analytical and problem-solving skills, ownership of automation and testing, and disciplined use of source control and CI/CD. The team operates like a startup within a larger organization to build and scale new fintech products.
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: $70.00 to $80.00/hr. w2
Responsibilities:
- Design, implement, test, and support workflow logic that drives client interactions on the private shares platform.
- Collaborate with technical leads and product managers to refine requirements and inform product direction.
- Build, deploy, and support production web applications using languages such as Python and JavaScript.
- Apply automation and testing strategies to ensure code robustness and reliability.
- Use source control and CI/CD tools and practices to maintain high-quality delivery.
- Research and prototype growth opportunities and new technologies to extend the platform.
- Collaborate closely with teammates, share knowledge, and contribute to engineering excellence.
Experience Requirements:
- Proven experience building, deploying, and supporting production web applications with Python and/or JavaScript.
- Strong analytical and problem-solving skills to understand complex customer needs and transactions.
- Hands-on experience with source code management and CI/CD pipelines using tools such as GitHub and Jenkins.
- Demonstrated ownership of automation and testing to ensure code quality.
- Ability to learn new technologies and patterns and adapt to changing requirements.
- Collaborative mindset with a passion for engineering excellence.
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.
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Eliassen Group is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status. Eliassen Group’s Affirmative Action Plan (AAP) is available for inspection by any employee or applicant for employment upon request, during normal business hours of Monday through Friday, 8:30am to 5:30pm EST. Interested persons should contact Phaedra Wells at pwells@eliassen.com for assistance. It is unlawful in Massachusetts and Maryland to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.
Applicants with disabilities that believe they require an accommodation or assistance with a position, please email our HR team at hradmin@eliassen.com. This email inbox is designed exclusively to assist job seekers whose disability prevents them from being able to apply online. Emails sent for other purposes will not receive a response.
Please be advised that a number of fraudulent job postings have been released under the Eliassen Group brand.
Unfortunately, fraudulent job postings can happen. If anyone reaches out to you about an open position connected with Eliassen Group, never provide personal or financial information to anyone who is not clearly associated with Eliassen Group
If anyone seemingly from Eliassen Group has ever requested this personal information in the past or does so in the future, please contactInfoSec@eliassen.com.
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, as indicated above