Principal Engineer / Head of Engineering

Principal Engineer / Head of Engineering This range is provided by Aegistech. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range $150,000.00/yr – $200,000.00/yr Direct message the job poster from Aegistech We are migrating our backend from Flask to Django to improve our API structure, maintainability, and scalability. As our Principal Engineer , you will be responsible for building out new APIs and services while ensuring a smooth transition to Django. You’ll work closely with the founding team and product leaders to design, implement, and scale backend systems that support high-volume enterprise use cases. Responsibilities: Develop and maintain backend services using Django, PostgreSQL, and Redis. Design and implement RESTful APIs , ensuring clean architecture and maintainability. Collaborate with frontend engineers and product teams to define API contracts . Work on database modeling and optimization to support large-scale data interactions. Assist in migrating existing Flask services to Django , ensuring a smooth transition. Deploy, monitor, and optimize services using AWS (EC2, S3, CloudFormation, ECS) . Implement CI/CD pipelines and DevOps best practices for automated deployments. Troubleshoot performance bottlenecks and improve system reliability . Requirements: 5+ years of backend engineering experience , ideally working with Django or Flask. Experience designing and maintaining APIs , following best practices for scalability and security. Strong database skills (PostgreSQL preferred) and experience with query optimization. Hands-on experience with AWS services (EC2, S3, CloudFormation, ECS). Familiarity with Docker, Kubernetes, or other DevOps tools is a plus. Strong problem-solving skills and the ability to work in a fast-moving environment. Bonus Points: Experience with Flask-to-Django migrations or building Django-based APIs from scratch. AI API Integrations. Familiarity with Stripe, Google Pay for Passes, Apple Wallet, and APNS . Experience setting up CI/CD pipelines (GitHub Actions, etc.) . 25 days of holiday + bank holidays. 1 fully paid volunteering day per year. Flexible remote work — work from anywhere or join us in our Marylebone, London office. Personal development budget to support your learning. Regular team outings in central London and abroad. Opportunity for equity reward . Seniority level Mid-Senior level Employment type Full-time Job function Information Technology #J-18808-Ljbffr