Lead Software Engineer (Java, AWS, Microservices) 1457

City : LA/ San Francisco / Seattle

Onsite/ Hybrid/ Remote: Hybrid (4 days a week onsite)

Duration : 12 months

Rate Range : Up to$100/hr on W2 depending on experience (no C2C or 1099
or sub-contract)

Work Authorization : GC, USC, All valid EADs except H1B

Tech Stack

Java, Spring Boot, AWS

Must Have:

Minimum 7 years of professional software engineering experience

Strong Java programming expertise

Experience building high-availability, scalable, large-scale systems

Backend-focused (70%) with some frontend involvement (React or similar)

Excellent communication, collaboration, and mentoring skills

Proven ability to work independently and drive technical initiatives

Responsibilities :

Design, write, and review scalable backend code for digital ad-serving platforms

Build and enhance internal tools that support the end-to-end ad pipeline

Translate product requirements into technical implementation plans and lead execution

Mentor junior engineers and help define engineering standards

Contribute to observability, monitoring, and alerting for backend systems

Participate in on-call support on a rotating basis

Collaborate closely with cross-functional teams to deliver performant and reliable solutions

Support frontend components (~30%) where needed, preferably using React or a similar framework

Qualifications:

Bachelor’s in STEM field + 7 years of experience OR equivalent combination (e.g., Bachelor’s + 5 years, Master’s + 3 years)

Deep knowledge of Java and backend engineering best practices

Experience with distributed systems and microservices architecture

Familiarity with Redis, React, or other front-end and caching technologies is a plus

Experience in the ad tech domain is a plus, but not required

Prior ownership of large-scale tools or services, preferably in high-traffic environments

Leadership experience without needing formal direct reports

Ability to thrive in dynamic environments and contribute proactively