Senior Software Engineer

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.  Role at a glance   You'll join the team building Aedeon. This is a hands-on, individual-contributor role,  not a management or lead position,  for someone who wants to stay close to the code and the infrastructure. You'll work across our Python services and the Kubernetes infrastructure they run on, and you'll take real ownership of how Aedeon ships: release calendar, deployment coordination, and being there when production needs you. What you'll do? Design, build, and maintain backend services in Python (FastAPI) powering Aedeon. Design and expose clean, well-documented REST APIs for frontend consumption. Own the release cycle end-to-end, release calendar, versioning, and coordinating deployments across staging and production. Manage and evolve Kubernetes deployments, including writing and maintaining Helm charts. Understand CI/CD pipelines in GitHub Actions, even without having built a lot of them. Work with AWS infrastructure supporting Aedeon's services. Monitor production health via CloudWatch and take part in on-call/incident response when things break. Work with PostgreSQL, including query optimization. Build and maintain durable workflows using Temporal for long-running or fault-tolerant processes. Collaborate closely with frontend engineers on API design and contracts,  you won't own frontend code, but you'll understand how it consumes your services. What we're looking for? 4 to 6 years of professional software engineering experience. Strong Python skills, ideally with FastAPI (Django/Flask experience also considered). Solid, hands-on production experience with Kubernetes  deployments, services, config, debugging, and performance & cost improvements. Experience writing and maintaining Helm charts. Working knowledge of AWS services. Comfortable designing REST APIs with frontend consumers in mind. Experience with PostgreSQL. A genuine ownership mindset, comfortable being accountable for a release going out clean and on time. Docker and general containerization fundamentals. Strong collaborator, comfortable working closely with the frontend team to align on API contracts and integration needs. Working knowledge of RabbitMQ (or similar message queuing systems). Experience with Temporal (temporal.io) or a similar durable workflow orchestration engine,  you'll be defining and running long-running, fault-tolerant workflows, not just calling APIs directly. You'll be preferred if you Have experience with CloudWatch or similar observability/monitoring tools Have exposure to Terraform or other infra-as-code tools Have experience with additional message queues (e.g., SQS, Kafka) Have experience building and maintaining CI/CD pipelines (GitHub Actions a plus) 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: Pre-Employment Assessment:   A series of evaluations of your technical proficiency and suitability for the role. 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.  Panel Interview: A structured conversation with members of the hiring team covering your experience, product thinking, and how you work.  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.     Note: Please answer as many questions as possible with this application to accelerate the hiring process.