Juniper Square - Principal Engineer (Platform)
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Requirements
• 12+ years of experience designing, building, and operating large-scale distributed production systems. • Strong backend engineering experience with Python frameworks such as FastAPI, Flask, Pyramid, or Django. • Experience leading technical design for complex systems, including making architecture decisions, evaluating tradeoffs, and guiding implementation across multiple engineers or teams. • Experience with relational/nosql databases, including schema design, performance tuning, query optimization, and data modeling. • Experience building and operating cloud-native systems using technologies such as AWS, GCP, Azure, Docker, Kubernetes, and infrastructure as code. • Strong understanding of CI/CD, observability, reliability, and operational excellence in production environments. • Ability to work through ambiguity, break down complex technical problems, and drive alignment across engineering, product, and design. • Strong ownership mindset, with the ability to independently drive high-impact initiatives while collaborating effectively in a fast-paced environment. • Demonstrated ability to raise engineering quality through technical standards, design reviews, mentoring, and reusable platform patterns. • Passion for improving developer experience through better platforms, tooling, automation, documentation, and engineering workflows. • You are flexible and adaptable—you will be juggling multiple projects in a fast-paced startup environment. • Comfortable driving a technical vision with a focus on shipping value incrementally rather than waiting for a big-bang release. • Platform team experience building tools and services consumed by other developers. • Experience building or integrating AI/LLM-powered systems in production, such as AI SDKs, RAG pipelines, evaluation frameworks, guardrails, prompt/tool orchestration, or model observability. • CIAM/Identity systems — Auth0, Okta, OAuth 2.0, OIDC, SAML, or custom-built identity infrastructure. • Security-aware design — least-privilege access, secrets management, secure API gateway patterns. • Passion for growing others through coaching, delegation, and leading by example.
Responsibilities
• Operates as the Directly Responsible Individual (DRI) for high-impact initiatives; takes full ownership of project health, system design, and end-to-end delivery. • Partners closely with Product Management and cross-functional teams to clarify ambiguous requirements, map business goals to technical scopes, and manage dependencies. • architectural design, pragmatic task breakdown, and execution planning, driving a team of engineers toward incremental deliverables. • Establish reusable patterns, technical standards, and platform primitives that other teams can build on. • Improve engineering efficiency through better tooling, automation, documentation, observability, and developer workflows. • Mentor engineers, raise the quality of technical decision-making, and help the team execute with consistency. • Drives adoption of AI tooling across the SDLC — building internal capabilities that automate engineering workflows while ensuring security, compliance, and best-practice alignment.
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