Sr. Software Engineer (Proficiency in NestJS & React Required)

It's fun to work in a company where people truly BELIEVE in what they're doing!

Fullsteam is a leading provider of vertical software and embedded payments technology dedicated to helping businesses flourish by providing their customers with seamless experiences. With a dynamic and growing team of over 1,900 employees, we are committed to driving innovation and delivering best-in-class software and payment solutions that empower small and medium-sized businesses across numerous industries. Our purpose is to help our customers grow their businesses and delight their customers. Join us and be a part of a forward-thinking company that values growth, excellence, and the success of our clients.

A minimum of 3 years of hands-on, day-to-day experience building production applications in both NestJS and React is required. This is a senior-level role, and expert proficiency in both technologies is essential for success.

Total Party Planner (TPP), part of the Fullsteam organization, is a well-established company transforming the catering industry, serving thousands of users daily. While our company is mature, our development team is small, dynamic, and empowered. This means low bureaucracy, high influence over code and product strategy, fast deployment cycles, and abundant cross-company collaboration.

We are seeking a confident Sr. Software Engineer to join our engineering team as a core member. In this role, you will take ownership of major features, contribute to product strategy, and help shape the engineering culture. This is a rare opportunity to make a direct impact in a small, collaborative team while working on products used across the entire catering industry.

Primary Responsibilities:

• Be an essential contributor to the engineering team and team culture.

• Take full ownership of major features from inception to production.

• Lead initiatives independently while leveraging support from the team.

• Analyze, troubleshoot, and fix bugs efficiently.

• Collaborate across departments to ensure the product meets user needs.

Required Qualifications:

• 3+ years of concentrated, daily experience with NestJS is required

• 3+ years of concentrated, daily experience with React is required

• Web Services/API experience (.Net Core)

• Experience with Microservices (.Net Core)

• Knowledge of Azure CI/CD pipelines

• Strong database skills (MS SQL)

• Experience with JQuery and legacy Webforms (.Net 4.8)

• Familiarity with AI tooling for DevEx

• Bachelor’s degree in Computer Science, Software Engineering, or a related field (or equivalent experience)

• 3–5+ years of experience in full stack development (or equivalent experience demonstrating strong skills in the required technologies)

Success Factors / Key Competencies:

• Excellent at writing structured programming logic.

• Skilled in unit testing to minimize rework from QA.

• Integrity, credibility, and commitment to the company mission.

• Action-Oriented: Self-starter who embraces challenges and takes initiative.

• Comfortable with ambiguity and risk; can make decisions with incomplete information.

• Strong collaborator, able to work independently and cooperatively with others across the organization.

• Intellectual agility: Quick to grasp complex concepts and problems.

• Fast learner, adaptable, and open to experimentation.

• Strong problem-solving skills, able to analyze issues rigorously and identify effective solutions.

• Drive for results: Consistently exceeds goals and pushes self and others to achieve outcomes.

Fullsteam supports an inclusive workplace that values diversity of thought, experience, and background. Fullsteam is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, religion, color, national origin, ancestry, age, physical or mental disability, sex, sexual orientation, gender identity/expression, pregnancy, veteran status, marital status, creed, status with regard to public assistance, genetic status or any other status protected by federal, state, or local law.