Senior Platform Engineer – Java

Oportun

full-time

Posted on: 1/29/2026

Location Type: Remote

Location: Mexico

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About the role

Design, build, test, deploy, and maintain scalable, reliable platform services and shared libraries.
Contribute to platform and system architecture decisions with a focus on reliability, scalability, and developer experience.
Write high-quality, maintainable code and set a strong example of engineering best practices.
Collaborate with Staff Engineers and peers to implement standards and patterns that support Continuous Delivery.
Identify and address performance, scalability, and reliability issues across platform services.
Participate actively in design reviews, code reviews, and technical discussions, providing thoughtful and constructive feedback.
Drive operational excellence by improving monitoring, alerting, and incident response practices.
Investigate root causes of production issues and implement long-term fixes to reduce on-call burden.
Mentor and support junior and mid-level engineers through code reviews, pairing, and technical guidance.
Partner with cross-functional teams to understand requirements and deliver solutions that create measurable business and customer value.

Requires a minimum of 7–8 years of related experience with a bachelor’s degree; or a master’s degree with an equivalent combination of education and experience.
Strong experience in software development with a focus on backend systems and services.
Proficiency in Java, C#, C++, or similar backend languages.
Strong understanding of software design principles, data structures, and algorithms.
Experience building and operating scalable, reliable, and secure systems.
Experience (3+ years) designing, building, deploying, and maintaining container-based applications.
Experience (4+ years) working with cloud platforms such as AWS, GCP, or Azure.
Strong problem-solving skills and ability to debug complex technical issues.
Experience with Continuous Delivery practices and automated deployment pipelines.
Effective communication and collaboration skills, with the ability to work well within cross-functional teams.
Experience mentoring junior engineers and contributing to team-level technical leadership.
Working knowledge of secure development practices and security considerations in distributed systems.

Benefits

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

JavaC#C++backend systemssoftware design principlesdata structuresalgorithmscontainer-based applicationscloud platformsContinuous Delivery

Soft Skills

problem-solvingeffective communicationcollaborationmentoringtechnical leadership