Full Stack Product Engineer, Agent Native

Mactores; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

Mactores in the United States is seeking a frontend engineer to design, build, and maintain full‑stack features across the Aedeon frontend (React + Next.js) with a strong focus on reliability, performance, and user experience.

You will collaborate with product management, designers, and backend/DevOps engineers to take features from requirements to deployed releases, participate in sprint ceremonies, and own end‑to‑end delivery, including test‑driven development and post‑release validation.

Qualifications

• Proficient in React.js with strong component architecture, state management, hooks, and performance optimization.
• Excellent knowledge of the Next.js framework and server-side rendering concepts.
• Experience building real-time interfaces using WebSocket APIs.
• Proficiency in TypeScript, HTML5, CSS3, and modern frontend tooling (Vite, Webpack).
• Experience implementing OAuth 2.0 flows (GitHub OAuth, AWS Cognito) in the frontend.
• Familiarity with responsive design and cross‑browser compatibility.

Responsibilities

• Design, build, and maintain full‑stack features across the Aedeon frontend with a focus on reliability, performance, and user experience.
• Collaborate with product management, designers, and backend/DevOps engineers to take features from requirement to deployed release.
• Participate actively in sprint planning, backlog grooming, and retrospectives with a product‑first perspective.
• Own delivery of features end to end — development through deployment and post‑release validation.

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.

What will you do

Product development

• Design, build, and maintain full-stack features across the Aedeon frontend (React + Next.js) with a focus on reliability, performance, and user experience.
• Work with product management, designers, and backend/DevOps engineers to take features from requirement to deployed, tested release.
• Participate actively in sprint planning, backlog grooming, and retrospectives with a product-first perspective.

Release ownership

• Own delivery of your features end to end — development through deployment and post-release validation.
• Commit to sprint and release deadlines and hit them. Flag blockers and risks with enough lead time to mitigate them.
• Coordinate with DevOps and QA so the deployment pipeline is ready and the release process is clean and repeatable.

Testing and quality

• Practice test-driven development. The test defines what “done” means before the code ships.
• Write detailed, accurate test cases for every feature before deployment — functional flows, edge cases, regression scenarios, integration touchpoints.
• Use AI-assisted tools to generate high-quality test cases at scale and validate them for coverage completeness.
• Build and maintain automated test suites (E2E, integration, unit) and integrate them into the CI/CD pipeline.
• Run thorough deployment validations in staging before any production release. No feature ships without sign-off.

Collaboration and documentation

• Write clear, maintainable code with adequate documentation. Review pull requests thoroughly and give constructive feedback.
• Document APIs, deployment procedures, test plans, and architectural decisions in Confluence or equivalent tools.
• Share testing best practices with the team and hold the line on quality and release discipline.

What you need for this opportunity

Frontend

• Strong proficiency in React.js: component architecture, state management, hooks, and performance optimization.
• Strong proficiency in the Next.js framework.
• Experience building real-time interfaces using WebSocket APIs.
• Proficiency in TypeScript, HTML5, CSS3, and modern frontend tooling (Vite, Webpack).
• Experience implementing OAuth 2.0 flows (GitHub OAuth, AWS Cognito) in the frontend.
• Familiarity with responsive design and cross-browser compatibility.

Cloud and infrastructure

• Working knowledge of AWS services: S3, DynamoDB, SES, Cognito, Secrets Manager, CloudWatch.
• Comfort navigating multi-account AWS environments (dev/uat/prod) and an understanding of VPC networking basics.

Testing and automation

• Test-driven development as a discipline. Tests written before the code, not after.
• Hands-on experience writing and maintaining automated test suites: E2E (Playwright or Cypress), integration tests, and unit tests.
• Experience using AI tools (Claude, LLM-based test generators) to accelerate and improve test case quality.
• Ability to write structured, accurate test cases from product requirements: functional, edge case, regression, and integration coverage.
• Experience integrating automated tests into CI/CD pipelines.

You’ll be preferred if you have

• Knowledge of Amazon OpenSearch Service or Elasticsearch.
• Experience with RabbitMQ or other message queue systems.
• Prior work on B2B SaaS products with a structured release process.

How we work?

Mactores was built agent-native from day one: agents absorb the repetitive 60–70% of delivery work, and engineers own the judgment. The same logic applies inside this role AI tooling generates test coverage and accelerates the routine work, and you own architecture, release calls, and the promise behind the date. Because Mactores’ founders also founded Aedeon Inc., field delivery and platform development feed each other: what our forward-deployed engineers learn on customer engagements shapes what gets built, and what you build shapes what ships for customers.

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

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.