Junior Full Stack Engineer

Prosum; California (MO); Hybrid; USD 70,000 - 95,000; Full time

Benefits offered by this job

Hybrid work environment

Job summary

Prosum is seeking a Junior Full Stack Engineer to join a growing technology organization and help build modern, AI-powered applications. This role is designed for an early-career engineer with strong fundamentals, eager to learn, and excited about developing across both frontend and backend technologies.

The role involves working on well-defined feature tickets, contributing to production applications, and growing through hands-on delivery, code reviews, pairing, and mentorship from experienced

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or related field, or equivalent experience.
• 0–3 years of professional or internship software engineering experience.
• Working knowledge of Python and/or JavaScript/TypeScript.
• Basic familiarity with React.js, including components, props, and state.
• Understanding of REST APIs and API design principles.
• Experience with Git, including PRs and merge conflicts.
• Ability to write basic SQL queries and understand relational databases.
• Strong curiosity, willingness to learn and take feedback.

Responsibilities

• Implement well-scoped features across the frontend and backend stack.
• Build user interface components using React.js and TypeScript, following design systems.
• Develop backend functionality and REST API endpoints using Python/FastAPI with guidance from seniors.
• Connect frontend and backend services and understand application architecture and data flow.
• Follow established coding patterns, style guides, and development standards.

Skills

Python

JavaScript/TypeScript

React.js

REST APIs

Git

SQL

Problem solving

Education

Bachelor's degree in Computer Science or related field

Tools

FastAPI

Flask

Django

React.js

Job description

We are seeking a Junior Full Stack Engineer to join a growing technology organization and help build modern, AI-powered applications. This role is designed for an early-career engineer who has strong technical fundamentals, is eager to learn, and is excited about developing across both frontend and backend technologies.

The Junior Full Stack Engineer will work on well-defined feature tickets, contribute to production applications, and develop their technical skills through hands‑on delivery, code reviews, pairing, and mentorship from experienced engineers. This is an opportunity to grow within a collaborative engineering environment that values quality, curiosity, and continuous improvement.

Salary Range: $70,000–$95,000

About the Role

We are seeking a Junior Full Stack Engineer to join a growing technology organization and help build modern, AI-powered applications. This role is designed for an early-career engineer who has strong technical fundamentals, is eager to learn, and is excited about developing across both frontend and backend technologies.

The Junior Full Stack Engineer will work on well-defined feature tickets, contribute to production applications, and develop their technical skills through hands‑on delivery, code reviews, pairing, and mentorship from experienced engineers. This is an opportunity to grow within a collaborative engineering environment that values quality, curiosity, and continuous improvement.

Key Responsibilities

• Implement well-scoped features across the frontend and backend stack.
• Build user interface components using React.js and TypeScript, following established design systems and component library conventions.
• Develop backend functionality and REST API endpoints using Python/FastAPI, with guidance from senior engineers.
• Connect frontend and backend services and develop an understanding of application architecture and data flow.
• Follow established coding patterns, style guides, development standards, and best practices.

Quality & Learning

• Write unit tests and develop familiarity with integration testing practices.
• Participate in code reviews, both receiving feedback on your work and gradually reviewing contributions from other team members.
• Ask questions early, communicate blockers, and collaborate effectively with engineering leadership and technical leads.
• Participate in Agile ceremonies, including standups, sprint planning, retrospectives, and demos.
• Leverage modern AI-assisted development tools to improve productivity and learn engineering patterns and best practices.

Growth & Contribution

• Take ownership of your professional development in partnership with your manager.
• Participate in technical learning opportunities, architecture discussions, code pairing, and knowledge-sharing sessions.
• Contribute ideas for improving engineering tools, documentation, development processes, and team practices.
• Develop familiarity with AI-powered applications and common LLM integration patterns.

Required Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or a related field, or equivalent experience through a coding bootcamp, self-directed learning, or demonstrated personal projects.
• 0–3 years of professional or internship software engineering experience.
• Working knowledge of Python and/or JavaScript/TypeScript, with the ability to read and contribute to code in both languages.
• Basic familiarity with React.js, including components, props, and state.
• Understanding of REST APIs, including how to consume APIs and basic principles of API design.
• Experience with Git, including branching, committing, creating pull requests, and resolving merge conflicts.
• Ability to write basic SQL queries and understand relational database concepts.
• Strong curiosity, willingness to learn, and ability to receive and apply constructive feedback.

Preferred Qualifications

• Academic or personal project experience with FastAPI, Flask, or Django.
• Experience building frontend applications with React.js, including coursework, hackathons, or personal projects.
• Exposure to a cloud platform such as AWS, Azure, or GCP through coursework or personal projects.
• Familiarity with AI/ML concepts or experience integrating an LLM API into a project.
• Experience working in an Agile development environment through coursework, internships, or extracurricular projects.

Work Environment & Requirements

• Hybrid work environment with structured in-office days to support onboarding, collaboration, and team engagement.
• Ability to work at a computer workstation for extended periods.
• Ability to use a keyboard, mouse, and other standard computer equipment.
• Availability during standard business hours, with flexibility for team ceremonies and occasional production support as needed.