Senior Software Engineer - Legacy Systems, High Impact

TrueML; United States; Remote; USD 50,000 - 78,000; Full time

Benefits offered by this job

Unlimited PTO

Medical benefit contributions

Job summary

TrueML is seeking a senior engineer for the Legacy Performance Improvement team to modernize mature systems and shape their evolution. You will mentor engineers, lead architectural decisions, and deliver tools critical to revenue-generating platforms.

You will work with stakeholders across engineering and business to ensure reliability, performance, and maintainability. This role emphasizes building internal tools, APIs, and services in a high-impact environment.

Qualifications

• 5+ years of professional software engineering experience building and shipping production software.
• Experience with software architecture, including designing systems and making sound technical trade-offs.
• Comfort working in and improving legacy codebases.
• Strong programming fundamentals and the ability to learn new languages and tools quickly.
• Experience with Scala and/or Python.
• Experience building services or APIs used by other engineers or internal teams.
• Strong communication skills and confidence working on high-visibility projects.

Responsibilities

• Design, build, and maintain internal tools and services, primarily within legacy systems.
• Contribute to architectural decisions, including how to incrementally modernize and improve existing platforms.
• Deliver on high-revenue projects where reliability, correctness, and performance are essential.
• Collaborate with stakeholders across engineering and the business to understand needs and communicate progress.
• Improve the maintainability, testing, and observability of existing codebases.
• Write clear technical documentation and share knowledge with the team.
• Participate in code reviews, mentor less-experienced engineers, and help raise the engineering bar.

Skills

Scala

Python

Software architecture

Legacy codebase

APIs

Communication

Mentoring

Tools

AWS/GCP

Containers

CI/CD

Job description

TrueML is seeking a senior engineer for the Legacy Performance Improvement team to modernize mature systems and shape their evolution. You will mentor engineers, lead architectural decisions, and deliver tools critical to revenue-generating platforms.

You will work with stakeholders across engineering and business to ensure reliability, performance, and maintainability. This role emphasizes building internal tools, APIs, and services in a high-impact environment.