Software Engineer - Platform (Frameworks, AI, Automation) Sr. Associate

Sixthstreet; Austin (TX); On-site; USD 130,000 - 160,000; Full time

Job summary

Sixthstreet is looking for a skilled software engineer in Austin, TX to join our growing technology team. You will play a key role in developing a cloud-native platform that enhances our developers' productivity and experience.

Ideal candidates will have over 7 years of software development expertise, a strong understanding of Python, and experience in building developer tooling. This full-time role emphasizes collaboration, innovation, and a high standard of engineering practices.

Sixthstreet values motivated candidates who are passionate about improving developer experience and thrive in a dynamic, team-oriented environment.

Qualifications

• 7+ years of experience in software development.
• Excellent programming skills, especially in Python.
• Experience building internal platforms and developer tooling.

Responsibilities

• Drive cross-team platform initiatives.
• Build self-service platform capabilities.
• Mentor engineering and non-technical stakeholders.
• Treat the platform as a product.
• Optimize instrumentation for metrics and telemetry.
• Evolve AI platform capabilities.
• Develop GitOps and CI/CD tooling strategy.
• Partner with Security and Cloud Infrastructure teams.
• Shape platform reliability and incident response strategies.

Skills

Professional software development

Python

CI/CD

RESTful APIs

Unix shell

Education

Degree in Computer Science or STEM field

Job description

The Role

Full‑time role based in Austin, TX as part of Sixth Street's growing technology team. We are building and evolving a cloud‑native platform that enables teams across the firm to build, ship, and operate secure, scalable software. We are a lean, high‑impact team where everyone wears many hats. We do not work in isolation; we are deeply connected with our developers to ensure the platform we build solves real‑world problems. In this role you will treat our platform as a product. You will be responsible for the “Golden Paths” that reduce cognitive load for our developers, while balancing technical excellence with deep developer empathy. You will work closely with our Infrastructure and Security teams on behalf of our developers and analysts who use our platform.

About Our Stack

• AWS‑centric: Lambda, ECS (Fargate), RDS, S3, CloudFront, ElastiCache
• Infrastructure as Code: CDK for IaC, Terraform a plus
• Tooling: Ownership of GitOps and CI/CD tooling – GitHub Actions
• Backend: Python‑centric (with some Java and Julia); Frontend: TypeScript/React
• Observability: OpenTelemetry standards and shared collectors
• AI: AI Gateway and shared AI platform services for secure model access and governance

Core Responsibilities

• Platform Strategy: Drive cross‑team platform initiatives; facilitate alignment, adoption, and migration plans across the Engineering organization.
• Self‑Service & DevEx: Build and evolve self‑service platform capabilities (e.g., “Golden Paths”) that reduce cognitive load and accelerate delivery via templates, libraries, and sample applications.
• Mentorship & Standards: Mentor engineers, analysts, and non‑technical stakeholders with empathy. Set high‑bar engineering standards for platform codebases and practice a disciplined approach to problem‑solving (SOLID, DDD, etc.).
• Product Mindset: Treat the platform as a product with active involvement in our roadmap, feedback loops with developers, documentation, and iterative UX improvements.
• Observability & Telemetry: Refine and optimize the org‑wide instrumentation “Golden Path” for metrics, logs, and traces. Enable teams through high‑quality documentation, examples, and targeted one‑on‑one partnering.
• AI Enablement: Evolve our AI platform capabilities, including AI gateway services and governance patterns. Use AI tools to plan, develop, and validate solutions as a key member of one of the firm’s primary AI teams.
• Deployment & Standards: In collaboration with our developers, evolve the GitOps and CI/CD tooling strategy. Encourage “Golden Path” deployment patterns, secrets management best practices, configuration, and runtime standards.
• Strategic Partnerships: Maintain a close partnership with the Security and Cloud Infrastructure teams to ensure platform patterns are secure and resilient.
• Operational Excellence: Help define the future of our platform’s reliability. This is an area ripe for ownership—you will have the opportunity to shape our evolving SLO/SLI strategy, incident response patterns, and on‑call expectations.

Preferred Qualifications

• 7+ years’ experience in professional software development. Degree in Computer Science or STEM field preferred.
• Curiosity and hunger to keep learning.
• Excellent programming skills in a major programming language. Python experience strongly preferred.
• Experience building internal platforms, shared services, or developer tooling.
• Passion for CI/CD and shipping well‑engineered code in a repeatable and reliable way.
• Experience designing RESTful APIs, and working with relational and “NoSQL” data stores.
• Comfortable working in a Unix shell.
• Strong sense of urgency; ability to execute quickly and efficiently with strong attention to detail.
• Ability to collaborate effectively across multiple teams.
• Strong prioritization and project management skills.
• Comfort working in a high‑growth, iterative environment.

What We Value

• Highly motivated, entrepreneurial, and team‑oriented candidates with strong problem‑solving skills.
• Strong developer empathy and a passion for improving developer experience.
• Team oriented and ability to influence through patterns, frameworks, and collaboration.
• High trust and integrity.
• Strategic/entrepreneurial mindset.
• Strong organizational and communication skills.
• Cross‑team collaboration and the ability to operate across engineering, analytics, risk, and infrastructure functions.

Sixth Street is proud to be an Equal Opportunity employer. We do not discriminate based upon race, religion, color, national origin, genetic history, marital status, gender (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, veteran or military status, disability, genetic predisposition, status as a victim of domestic violence, a sex offense or stalking, or any other class or status in accordance with applicable federal, state and local laws.

Pursuant to the San Francisco Fair Chance Ordinance, Sixth Street will consider for employment qualified applicants with arrest and conviction records.

If you need a reasonable accommodation to fill out this application, please contact Cindy Bombara.

Please refer to the privacy notice on our website for additional information regarding our obligations under the California Consumer Privacy Act (“CCPA”).