Principal Full Stack Engineer

On-site Every Other Week onsite / 5 days in either Physical Location or Salem, NH

Our client seeks a Principal Full Stack Engineer to design and deliver modern web applications and the CI/CD automation that ships them. The role emphasizes React for the frontend and Python for the backend within a Microsoft-centric environment including Azure and Microsoft Fabric. You will collaborate across teams, decompose complex problems into scalable solutions, and guide developers through best practices for application architecture, DevOps, and version control. The position requires strong communication, teamwork, and the ability to mentor others.

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: $74.00 to $78.00/hr. w2

• Design, develop, and maintain full stack applications using React on the frontend and Python on the backend.
• Own and implement CI/CD pipelines, automation scripts, and tooling to streamline builds, releases, and workflows.
• Collaborate with cross-functional teams leveraging Azure, Microsoft Fabric, and related services.
• Communicate technical needs and capabilities to technical and non-technical partners.
• Lead by example, guide, and mentor junior developers.
• Decompose complex business problems into efficient and scalable technical solutions.
• Apply Agile methodologies and contribute to continuous improvement.
• Work across traditional codebases and platform-based solutions in the Microsoft ecosystem, including Power Platform.

• 8+ years of full stack software engineering experience, preferably including financial services.
• Strong hands-on experience with React, JavaScript/TypeScript, HTML/CSS, and related frontend tooling.
• Strong hands-on experience with Python for backend services. .NET experience is a plus.
• Proficiency with CI/CD concepts and tools, including build pipelines, automation, and version control.
• Experience establishing and managing CI/CD pipelines for React and Python applications.
• Team collaboration experience delivering and supporting key applications and features.
• Knowledge of modern application architecture patterns and emerging technologies.
• Experience with Azure services, Microsoft Fabric, and the Microsoft ecosystem including PowerApps, Power BI, and Power Automate.
• Ability to create automation scripts to streamline deployments and workflows.
• Best practices in version control, release management, and DevOps in hybrid environments.
• Relational database skills and familiarity with SQL Server, Fabric, or Dataverse is a plus.
• AI integration exposure and use of generative AI development assistance tools is a plus.
• Strong communication, teamwork, polish, and presentation skills.

• BS/BA degree or equivalent experience.

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 ( View email address on careers.eliassen.com , Show phone number) 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.

· 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  View email address on careers.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!