Senior Full Stack Software Engineer

Primis; Miami (FL); On-site; USD 95,000 - 130,000; Full time

Job summary

Primis in Miami, FL is seeking a Full Stack Engineer to join our onsite tech team to build and modernize proprietary platforms for a financial services client, including AI-driven automation initiatives.

The role emphasizes ownership, autonomy, and impact on a lean, high-impact engineering group. Strong .NET and React experience and a passion for reliable, scalable solutions are valued.

Qualifications

• 3+ years building solutions in financial services.
• Hands-on experience with frontier AI models: prompt design, harness engineering, API integration
• Strong grasp of OOP principles, design patterns, and multi-tiered architectures
• SQL Server experience, including stored procedures
• Experience with async/parallel programming in .NET
• Solid DevOps practices (version control, release management)
• Bachelor's degree in Computer Science
• Must be a US Citizen or Permanent Resident

Responsibilities

• Build and support proprietary platforms across the business
• Troubleshoot and resolve data, performance, and system issues
• Modernize and optimize legacy systems and workflows
• Design and implement AI-driven automations using tools like Claude and OpenAI
• Collaborate cross-functionally to support firm-wide goals

Skills

Financial services experience

AI model experience

OOP

API integration

Education

Bachelor's degree in Computer Science

Tools

SQL Server

.NET

Git / Version Control

AI APIs

Job description

We're hiring: Full Stack Engineer (.NET / React)

Our client is a well-established financial services firm with decades of experience in private equity and hedge fund investing. They're growing their technology team and looking for a Full Stack Engineer to help build and modernize the proprietary platforms that power their business, including new AI-driven automation initiatives.

This is a long-term, onsite opportunity for someone who wants ownership, autonomy, and a seat at the table on a lean, high-impact tech team.

What you'll do:

• Build and support proprietary platforms across the business
• Troubleshoot and resolve data, performance, and system issues
• Modernize and optimize legacy systems and workflows
• Design and implement AI-driven automations using tools like Claude and OpenAI
• Collaborate cross-functionally to support firm-wide goals

What you bring:

• 3+ years building solutions in financial services
• Hands-on experience with frontier AI models: prompt design, harness engineering, API integration
• Strong grasp of OOP principles, design patterns, and multi-tiered architectures
• SQL Server experience, including stored procedures
• Experience with async/parallel programming in .NET
• Solid DevOps practices (version control, release management)
• Bachelor's degree in Computer Science
• Must be a US Citizen or Permanent Resident

Research shows that candidates from underrepresented groups often wait until they meet nearly all requirements before applying, while others apply when meeting just 50-60%. If this role excites you and you meet many—but not all—of these criteria, we still want to hear from you.

We actively encourage applications from underrepresented talent and are committed to supporting accessibility needs throughout our hiring process.