Full Stack Product Engineer Intern, Agent Native

ApplyMint; California (MO); On-site; USD 21,000 - 34,000; Full time

Job summary

Mactores is seeking an enthusiastic frontend intern to join the Aedeon frontend team, helping design, build, and maintain features in React + Next.js under mentor guidance.

You will collaborate with product managers, designers, and backend engineers, participate in sprints, and gain hands-on experience delivering real enterprise features, with a focus on quality, testing, and release discipline.

Qualifications

• Currently pursuing or recently completed a degree in CS, Engineering, or related field.
• No prior professional experience required; personal projects count.
• Strong curiosity about shipping production software.
• Willing to learn and grow in a fast-paced team.

Responsibilities

• Assist in designing, building, and maintaining frontend features in React/Next.js.
• Collaborate with product, design, and backend teams to translate requirements into shipped releases.
• Participate in sprint planning, testing, and documentation.

Skills

React.js

HTML5

CSS3

JavaScript

TypeScript

Next.js

Git

Frontend tooling

Education

Pursuing CS/Engineering degree

Tools

Playwright

Cypress

Job description

About Mactores

Mactores is the agent-native AWS modernization firm. Most enterprise modernization stalls at pilots and handoffs; ours ships, production systems running, legacy retired, outcomes measured. Our delivery is built on Aedeon, the agent platform built by Mactores’ founders’ sister company, Aedeon Inc. Aedeon absorbs the repetitive 60–70% of engagement work, discovery, mapping, validation, test generation, while forward-deployed engineers own architecture, judgment, and cutover. Mactores is Aedeon’s flagship deployment partner: field delivery informs the platform roadmap, and the platform shapes how we deliver.

About Aedeon

Aedeon is the agent platform for enterprise modernization, built by Aedeon Inc., a separate product company founded by the same team that founded Mactores. Aedeon turns the systems already running a business applications, databases, data platforms, business rules, workflows into governed AI agents, grounded in a persistent Code Intelligence Graph of the customer’s own code and verified through behavior-equivalence proof. Aedeon is delivered as a product, not a services engagement, and runs without mandatory forward-deployed engineers.

This internship puts you inside the platform side of Aedeon: you’ll help build product features on the Aedeon frontend, working alongside senior full-stack engineers who will mentor you through the full delivery lifecycle, building features, writing test cases, and validating releases. You’ll get hands‑on exposure to a real product with real enterprise customers, not a sandbox project.

What you’ll do?

Product development

• Assist in designing, building, and maintaining features across the Aedeon frontend (React + Next.js) under the guidance of senior engineers.

• Work with product managers, designers, and backend engineers to understand requirements and help take features from spec to shipped, tested release.

• Participate in sprint planning, backlog grooming, and retrospectives, and start building a product‑first perspective.

Learning release discipline

• Learn how features are owned end to end — from development through deployment and post‑release validation.

• Practice breaking down tasks against sprint timelines and flagging blockers early.

• Shadow how the team coordinates with DevOps and QA to keep releases clean and repeatable.

Testing and quality

• Learn test‑driven development: write test cases before code, under mentor review.

• Help write test cases for features you work on — functional flows, edge cases, and regression scenarios.

• Get exposure to AI‑assisted tools for generating test coverage, and to automated test suites (E2E, integration, unit) wired into CI/CD.

Collaboration and documentation

• Write clear, well‑documented code and submit pull requests for review.

• Document your work features, test plans, decisions in Confluence or equivalent, in a way others can follow without you in the room.

What we’re looking for?

Frontend fundamentals

• Currently pursuing, or recently completed, a degree in Computer Science, Engineering, or a related field (final‑year students welcome).
• Working knowledge of React.js fundamentals components, state, hooks.
• Familiarity with HTML5, CSS3, and JavaScript/TypeScript basics.
• Some exposure to Next.js, Git, and modern frontend tooling is a plus, but not required, we’ll teach you.
• No prior professional experience required; personal projects, coursework, or hackathon work count.

Mindset

• Curiosity about how production software actually ships — not just how it’s coded.
• Comfortable asking for feedback and iterating quickly on it.
• Genuine interest in testing discipline and quality, not just feature output.

You’ll be preferred if you’ve

• Any exposure to AWS services (S3, DynamoDB, Cognito) through coursework or personal projects.
• Familiarity with Playwright, Cypress, or any automated testing framework.
• A GitHub profile or portfolio showing projects you’ve built.

Additional Information

Life at Mactores

We care about creating a culture that makes a real difference in the lives of every Mactorian. Our 10 Core Leadership Principles that honor Decision‑making, Leadership, Collaboration, and Curiosity drive how we work.

1. Be one step ahead

2. Deliver the best

3. Be bold

4. Pay attention to the detail

5. Enjoy the challenge

6. Be curious and take action

7. Take leadership

8. Own it

9. Deliver value

10. Be collaborative

We would like you to read more details about the work culture on https://mactores.com/careers

The Path to Joining the Mactores Team

At Mactores, our recruitment process is built around distinct structured stages. Here’s an overview of what to expect at each stage:

Take-home Assessment:

A technical task relevant to the role, so you can demonstrate your thinking and approach at your own pace.

Technical Interview: A hands‑on session with one of our panel members covering your technical skills, hands‑on experience, and how you deliver quality under pressure.

HR Discussion: During this 30-minute session, you’ll have the opportunity to discuss the offer and next steps with a member of the HR team.

At Mactores, we are committed to providing equal opportunities in all of our employment practices, and we do not discriminate based on race, religion, gender, national origin, age, disability, marital status, military status, genetic information, or any other category protected by federal, state, and local laws. This policy extends to all aspects of the employment relationship, including recruitment, compensation, promotions, transfers, disciplinary action, layoff, training, and social and recreational programs. All employment decisions will be made in compliance with these principles.