Senior Full-Stack Engineer

Aptia Group; Orlando (FL); Hybrid; USD 100,000 - 130,000; Full time

Job summary

A technology firm is seeking a Senior Full Stack Engineer in Lake Mary, FL, to design and develop scalable applications. Ideal candidates will have over 8 years of experience in software development, including strong backend language skills and AWS expertise. This full-time position offers a hybrid work model with in-office collaboration three days a week. Responsibilities include mentoring junior engineers, developing APIs, and optimizing database performance.

Qualifications

• 8+ years of software development experience.
• Expertise in a strongly typed backend language like Java, Scala, or C#.
• Advanced SQL skills with relational databases, especially PostgreSQL.

Responsibilities

• Collaborate to understand and develop product requirements.
• Design and implement scalable full stack applications.
• Mentor junior engineers and contribute to technical decisions.

Skills

Software development experience

Strongly typed backend language expertise

SQL skills

AWS services experience

Testing expertise

Distributed systems knowledge

Software engineering best practices

Tools

Java

PostgreSQL

Terraform

Cypress

Docker

Kubernetes

Job description

At Aptia, we're building technology that powers better benefits experiences through innovation, scale, and collaboration. As a Senior Full Stack Engineer, you'll play a key role in designing and developing solutions that move our products forward - from the front-end experience to the cloud infrastructure that supports it. You'll collaborate closely with product, business operations, and client teams to translate complex requirements into elegant, scalable applications. This role offers the opportunity to shape technical decisions, mentor other engineers, and deliver high-quality, high-impact software that supports Aptia's mission to simplify benefits administration for employers and their employees.

Location: Lake Mary, FL (hybrid; onsite three days per week)

What you’ll be doing

• Collaborate with product team, business operations, and customers to understand and develop product requirements
• Design and implement scalable full stack applications and APIs
• Develop responsive, user-friendly React frontend interfaces
• Build robust backend services with comprehensive test coverage
• Optimize database performance and manage complex data relationships
• Architect and maintain cloud infrastructure on AWS
• Write and maintain automated unit and integration tests
• Collaborate with cross-functional teams to deliver high-quality solutions
• Mentor junior engineers and contribute to technical decision-making
• Participate in code reviews and maintain engineering standards

What we’re looking for

• 8+ years of software development experience
• Expertise in at least one strongly typed backend language: Java, Scala, Kotlin, C#, or Typescript
• Advanced SQL skills with relational databases, preferably PostgreSQL
• Complex queries with joins and subqueries
• Common Table Expressions (CTEs)
• Query optimization and performance tuning
• Hands-on experience with core AWS services
• Compute services (EC2 or ECS)
• CloudFront (CDN and content delivery)
• Elastic Load Balancer (ELB)
• S3 (storage and data management)
• IAM (security and access management)
• Testing expertise including automated unit and integration testing
• Experience with distributed systems and microservices architecture
• Strong understanding of software engineering best practices

Preferred Qualifications

• Experience with Terraform for infrastructure as code
• End-to-end testing experience with frameworks like Cypress
• Knowledge of containerization technologies (Docker, Kubernetes)
• Experience with CI/CD pipelines and DevOps practices
• Background in high-traffic, production environments

Seniority level

Mid-Senior level

Employment type

Full-time