Senior Full Stack Engineer

Status: Open
Employment Type: Direct Hire

About the Role

As a Senior Full Stack Engineer, you will play a key role in designing and developing solutions that move our products forward — from the front-end user experience to the cloud infrastructure that supports it.

You will collaborate closely with product, business operations, and client-facing teams to translate complex requirements into elegant, scalable applications. This role offers the opportunity to influence technical decisions, mentor other engineers, and deliver high-quality, high-impact software that supports our mission to simplify benefits administration for employers and their employees.

What You’ll Be Doing

Collaborate with product teams, business operations, and customers to understand and develop product requirements

Design and implement scalable full stack applications and APIs

Develop responsive, user-friendly frontend interfaces using React

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

Work closely with cross-functional teams to deliver high-quality solutions

Mentor junior engineers and contribute to technical decision-making

Participate in code reviews and uphold engineering standards

What We’re Looking For

8+ years of professional software development experience

Expertise in at least one strongly typed backend language (Java, Scala, Kotlin, C#, or TypeScript)

Frontend development experience with React and modern JavaScript/TypeScript

Advanced SQL skills with relational databases, preferably PostgreSQL, including:

Complex queries with joins and subqueries

Common Table Expressions (CTEs)

Query optimization and performance tuning

Hands-on experience with core AWS services, including:

Compute services (EC2 or ECS)

CloudFront (CDN and content delivery)

Elastic Load Balancer (ELB)

S3 (storage and data management)

IAM (security and access management)

Strong experience with automated unit and integration testing

Experience building distributed systems and microservices architectures

Solid understanding of software engineering best practices

Preferred Qualifications

Experience using Terraform for infrastructure as code

End-to-end testing experience with frameworks such as Cypress

Familiarity with containerization technologies (Docker, Kubernetes)

Experience with CI/CD pipelines and DevOps practices

Background working in high-traffic, production environments

Equal Opportunity Employer / Disabled / Protected Veterans

The Know Your Rights poster is available here:
https://www.eeoc.gov/sites/default/files/2023-06/22-088_EEOC_KnowYourRights6.12.pdf

The pay transparency policy is available here:
https://www.dol.gov/sites/dolgov/files/ofccp/pdf/pay-transp_%20English_formattedESQA508c.pdf

For temporary assignments lasting 13 weeks or longer, AppleOne is pleased to offer major medical, dental, vision, 401k and any statutory sick pay where required.

We are committed to working with and providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation for any part of the employment process, please contact your staffing representative who will reach out to our HR team.

AppleOne participates in the E-Verify program in certain locations as required by law. Learn more about the E-Verify program.
https://e-verify.uscis.gov/web/media/resourcesContents/E-Verify_Participation_Poster_ES.pdf

We also consider for employment qualified applicants regardless of criminal histories, consistent with legal requirements, including, if applicable, the City of Los Angeles’ Fair Chance Initiative for Hiring Ordinance. Pursuant to applicable state and municipal Fair Chance Laws and Ordinances, we will consider for employment-qualified applicants with arrest and conviction records, including, if applicable, the San Francisco Fair Chance Ordinance. For Los Angeles, CA applicants: Qualified applications with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act.