Full Time

Principal Software Engineer

Bestinfo Systems LLC
Full-time
Associate
Staffing and Recruiting
St Louis, MO
$170,000 - $250,000* / year (about $82–$120 an hour)

Job Description

Principal / Senior Principal Software Engineer, Java/Python & AI


Java, Spring Boot, Python & AI Technologies


Location: Atlanta, GA or St. Louis, MO


Work Arrangement: Hybrid, four days onsite per week

Employment Type: Full-Time


Experience: 7–10 Years


Base Salary: $150,000 to $180,000 annually


Exceptional candidates may be considered for higher compensation, subject to approval.


Position Overview


We are seeking highly skilled and hands-on Principal / Senior Principal Software Engineers with strong expertise in Java, Spring Boot, Python, REST APIs, and enterprise application development.


The ideal candidate combines advanced software engineering capabilities with exposure to Generative AI tools and modern AI-assisted development technologies.


This opportunity involves working on enterprise software solutions in a technically demanding environment that values practical programming expertise, problem-solving capabilities, and modern development methodologies.


Key Responsibilities


Design, develop, and maintain enterprise-grade Java applications.

Build and enhance backend services using Spring Boot and Spring MVC.

Design and implement RESTful APIs and microservices.

Develop Python-based automation, integration, and backend components.

Work with SQL databases and relational data architectures.

Follow structured software development practices, including Spec Driven Development.

Collaborate with engineering teams using Agile methodologies.

Maintain code quality, version control, and technical documentation.

Leverage AI-assisted development tools where appropriate.

Troubleshoot complex technical challenges and support reliable application delivery.


Base Salary - USD $150,000 to $200,000

Full-time Benefits - Full

Relocation Assistance Available - Possible for ideal candidate

Commission Compensation - No

Bonus Eligible - No

Overtime Eligible - No

Interview Travel Reimbursed - No

Candidate Details

7+ to 10 years of experience

Seniority Level - Mid-Senior

Management Experience Required - No

Minimum Education - Bachelor's Degree

Willingness to Travel - Occasionally

Ideal Candidate

Required Qualifications


7–10 years of relevant software engineering experience.

Strong hands-on Java development experience, including Java 8, 11, 17, or newer.

Practical expertise in Spring Boot and Spring MVC.

Experience developing REST APIs and microservices.

Proficiency in Python for automation, integrations, or backend development.

Exposure to Spec Driven Development.

Strong SQL and relational database skills.

Proficiency with Git.

Knowledge of SDLC and Agile methodologies.

Strong analytical and troubleshooting capabilities.

Preferred Qualifications


Experience with Generative AI tools, including GitHub Copilot, Claude, Gemini, or similar platforms.

Experience using AI coding assistants to improve engineering productivity.

Exposure to cloud AI services on AWS, Microsoft Azure, or Google Cloud.

Additional Advantages


Integration of GenAI into Java or Python applications.

Development of AI-powered APIs, assistants, or copilots.

Experience with agentic AI workflows.

Understanding of Model Context Protocol (MCP).

Familiarity with enterprise AI architectures.

Work Location and Eligibility


Candidates must be willing and able to work onsite four days per week in Atlanta, Georgia, or St. Louis, Missouri.


Preference will be given to professionals already located in these metropolitan areas.


Applicants must be U.S. citizens or lawful permanent residents.


Visa sponsorship is not available for this position.


Recruitment Process


Shortlisted candidates will participate in:


Initial profile evaluation.

CoderPad technical assessment.

One or two technical interviews.

Final client interview.

This is an urgent hiring requirement with a limited number of available positions.


Qualified candidates are encouraged to apply promptly.


Prioritize hands-on Java/Spring Boot/Python engineers with enterprise software development experience, preferably from financial services, fintech, credit reporting, or IT consulting organizations.


MANDATORY CANDIDATE QUESTIONNAIRE

Please provide complete, updated information for each qualified candidate:


Full Name & LinkedIn URL:


Current Location: City, State.


Work Authorization: U.S. Citizen / Green Card.


Hybrid Availability: Confirm 4 days onsite in Atlanta or St. Louis.


Experience: Total years; hands-on Java, Spring Boot/MVC, Python, REST APIs/Microservices, SQL, and Spec Driven Development experience (brief details).


AI & Cloud: Practical GenAI experience/tools (Copilot, Claude, Gemini, AI Agents, MCP); AWS/Azure/GCP exposure.


Compensation: Current annual compensation and expected annual base salary (USD).


Availability: Notice period, earliest joining date, and availability for CoderPad/interviews.


Why this employer is a great company

About Our Client ( FTE with them )

Join a $4.8 Billion Global Technology Leader Driving the Next Generation of AI-Powered Enterprise Transformation

Our client is a publicly traded, multibillion-dollar global technology services and consulting organization at the forefront of Artificial Intelligence, Digital Engineering, Cloud Transformation, and Enterprise Innovation.


Backed by one of the world's leading multinational engineering and technology conglomerates, the company combines exceptional financial strength, global delivery capabilities, and deep industry expertise with an ambitious strategy to accelerate AI-driven business transformation.


Global Scale & Financial Strength

Approximately $4.8 Billion in Annual Revenue (FY2026).


Nearly 88,000 Technology Professionals worldwide.


750+ Enterprise Clients, including major multinational corporations.


Operations in 42 Countries across five continents.


Part of a $30+ Billion Global Conglomerate, providing long-term financial stability and strategic resources.

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