Sr. Full Stack Developer

Posted Yesterday
Be an Early Applicant
Atlanta, GA, USA
In-Office
130K-150K Annually
Senior level
Fintech • Financial Services
The Role
Build and maintain scalable full-stack applications and AI-powered features across front-end, back-end, cloud infrastructure, and LLM systems. Develop APIs and services on AWS, write automated tests, support CI/CD and production operations, troubleshoot deployments, and contribute to architecture and scalability. Use AI coding agents and production AI tooling, collaborate with product and DevOps teams, iterate rapidly in an Agile environment, and mentor junior developers.
Summary Generated by Built In

HOW YOU’LL MAKE A DIFFERENCE:

We are seeking a Senior Full-Stack Developer to help design and build our AI-powered application and deliver scalable, high-performance applications across the full technology stack. Unlike large enterprises, we move fast and embrace agility — valuing rapid prototyping, iteration, and learning over lengthy requirement cycles.

The ideal candidate is a hands-on developer who thrives in an Agile environment, actively uses AI coding agents (e.g., Claude Code, GitHub Copilot, Cursor) to build faster and better, and is excited to apply AI/LLM concepts directly to our product roadmap.

IN THIS ROLE, YOU’LL GET TO:

  • Build, test, and iterate quickly on prototypes and production-ready applications.
  • Lead full-stack development across front-end, back-end, and infrastructure.
  • Leverage AI coding agents (e.g., Claude Code, GitHub Copilot, Cursor) as a core part of your daily workflow to accelerate development, automate repetitive tasks, and raise code quality.
  • Design, build, and evolve AI-powered features for our application, integrating LLMs, agents, and related AI infrastructure into the core product.
  • Develop APIs, services, and cloud-native solutions on AWS.
  • Collaborate closely with architecture, product management, and DevOps to shape requirements and deliver impactful solutions.
  • Work alongside our DevOps team to ensure smooth deployments, scalability, and operational excellence.
  • Take pride of ownership in what you build — we invest in strong CI/CD and automated testing, with feature flags so releases aren’t handicapped by business readiness, letting the team work smart, not just hard. This reflects our values in action: taking responsibility from design through production support, and pitching in when the team needs it.
  • Contribute to a culture of experimentation, agility, and continuous improvement.
  • Write and maintain automated tests (unit, integration, and end-to-end) and champion a strong quality assurance culture across the codebase.
  • Mentor junior developers and provide technical guidance.

THIS OPPORTUNITY IS FOR YOU IF YOU HAVE/ARE:

  • 7+ years of professional experience as a full-stack developer.
  • Agile mindset with a strong focus on prototyping, iteration, and speed-to-value.
  • Front End: Angular or React, strong proficiency in JavaScript/TypeScript.
  • Back End: Strong, hands-on proficiency in Python required; also .NET, PostgreSQL, MongoDB, RDS.
  • Infrastructure: Deep, hands-on production experience with AWS (EC2, EKS/Kubernetes, Lambda, RDS, S3, IAM, Cognito, CloudWatch, Bedrock, etc.) required — including the ability to independently diagnose and resolve common operational issues (e.g., pod/container failures, scaling, deployment errors) rather than relying on DevOps for routine troubleshooting.
  • Quality & Testing: Strong track record writing automated tests (unit, integration, end-to-end), test-driven development, and building test coverage into CI/CD pipelines.
  • AI-Assisted Development: Demonstrated, hands-on experience using AI coding agents/assistants (e.g., Claude Code, GitHub Copilot, Cursor) to write, review, and ship code faster.
  • Building AI-Powered Products: Experience building AI/LLM-powered application features (e.g., agents, RAG, embeddings), ideally leveraging AWS Bedrock — you’ll help build and evolve our product’s AI capabilities directly.
  • Solid understanding of software architecture, scalability, and performance.
  • AI Tooling: Hands-on, shipped experience with LLM orchestration frameworks, evaluation/monitoring tooling, and vector databases for embeddings and retrieval required — this should be production experience, not just interest.
  • Experience collaborating with DevOps teams and familiarity with CI/CD practices.
  • Culture Fit: Technical depth paired with humility — someone who asks first how they can add value, is brutally honest about what’s working and what isn’t, and cares more about the team’s success than personal credit. We have zero tolerance for ego.

Nice to Have

  • GIS (Geographic Information Systems)knowledge or experience with geospatial data integration.
  • Previous leadership or mentoring experience.

WHAT WE OFFER: 3 weeks of PTO, 13 company paid holidays, paid parental leave, and a flexible work environment. Medical, Dental, Vision, Life, Disability, and 401K plans begin the first of the month after 30 days of employment.

OUR PURPOSE is to provide opportunities that help people thrive using their God-given abilities.

OUR CORE VALUES:

  • Be a Self-Starter. Continuously seek ways to improve yourself and the business, take responsibility, and act with urgency to solve problems.
  • Be a Team Player. Prioritize team success over individual achievements, support your colleagues, and contribute to creating high-performing teams.
  • Be a Patriot. Focus on the greater good of the organization, be honest about what’s working, and passionately work towards making the company better.
  • Do it Right. Uphold high standards and integrity, even when no one is watching, and always aim to do the right thing.
  • Be Humble. Lead by serving others, value diverse perspectives, and remain open to new ideas and feedback.

WHAT WE DO:

As the largest commercial real estate services marketplace in the nation, MountainSeed MarketPlace offers a comprehensive range of appraisal management, review services, and more. MountainSeed Analytics platform provides real-time, accurate real estate data insights, helping clients make informed decisions in markets across the U.S. MountainSeed’s Capital Markets Solutions including Loan Sale Advisory and Sale Leaseback Programs assist in enhancing an institution’s financial health.

 

MountainSeed is proud to be an Equal Opportunity Employer and provides equal employment opportunities to all employees and applicants without regard to race, color, religion, sex, age, national origin, disability, veteran status, pregnancy, sexual orientation, or any other characteristic protected by law.

Skills Required

  • 7+ years of professional full-stack development experience
  • Agile mindset with experience in rapid prototyping, iteration, and speed-to-value
  • Strong proficiency in JavaScript or TypeScript
  • Front-end development experience with Angular or React
  • Hands-on proficiency in Python
  • Experience with .NET, PostgreSQL, MongoDB, and Amazon RDS
  • Deep production experience with AWS, including EC2, EKS or Kubernetes, Lambda, RDS, S3, IAM, Cognito, CloudWatch, and Bedrock
  • Ability to independently diagnose and resolve operational issues involving containers, scaling, deployments, and cloud infrastructure
  • Experience writing unit, integration, and end-to-end automated tests
  • Experience with test-driven development and integrating test coverage into CI/CD pipelines
  • Hands-on experience using AI coding agents or assistants such as Claude Code, GitHub Copilot, or Cursor
  • Production experience building AI- or LLM-powered application features, including agents, RAG, or embeddings
  • Shipped experience with LLM orchestration frameworks, evaluation or monitoring tools, and vector databases
  • Understanding of software architecture, scalability, and performance
  • Experience collaborating with DevOps teams and familiarity with CI/CD practices
  • GIS or geospatial data integration knowledge
  • Previous leadership or mentoring experience
Am I A Good Fit?
beta
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company
HQ: Atlanta, GA
113 Employees
Year Founded: 2006

What We Do

MountainSeed is a dedicated appraisal management and real estate service company and your commercial real estate appraisal partner. Proudly serving over 600 companies daily. Overview Our mission is to provide opportunity and help people thrive using their God-given abilities. That's "why" we do what we do.....Now here is more about "what" we are doing..... We are on a journey to be the world leader in commercial real estate. We hold the largest, Most accurate, real time database of CRE in America. Currently we: - serve 600+ banks totaling over $750B in assets - see over $40B in annual loan volume - work with 3,000 Financial Professionals - National coverage with a client located in each state - MountainSeed continues to give back to our community. Hired dozens of homeless women and trained them to further their job skills. - have been voted best place to work in Atlanta - MountainSeed has been voted as one of the fastest growing private companies in Atlanta during consecutive years

Similar Jobs

Worth Logo Worth

Senior Software Engineer

Artificial Intelligence • Fintech • Software • Financial Services
In-Office or Remote
4 Locations
84 Employees

ServiceTitan Logo ServiceTitan

Software Engineer

Artificial Intelligence • Cloud • Fintech • Machine Learning • Mobile • Software
Remote or Hybrid
US
2760 Employees
153K-245K Annually

CapTech Logo CapTech

Senior Full-stack Engineer

Information Technology • Consulting
Hybrid
Atlanta, GA, USA
1100 Employees
In-Office or Remote
2 Locations
3295 Employees
93K-121K Annually

Similar Companies Hiring

Hanover Park Thumbnail
Artificial Intelligence • Fintech • Software • Financial Services
New York, New York
42 Employees
Kepler  Thumbnail
Artificial Intelligence • Fintech • Software
New York, New York
9 Employees
Onshore Thumbnail
Artificial Intelligence • Fintech • Software • Financial Services
New York, New York
85 Employees

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account