Staff / Principal Platform Engineer

AppGate; New York (NY); Hybrid; USD 185,000 - 270,000; Full time

Benefits offered by this job

Performance bonuses

Considerable equity

Job summary

AppGate is seeking a Staff or Principal Platform Engineer to build and operate the foundational platform for its AI products in New York City. The role combines deep DevOps expertise and hands-on AI/ML operational experience, prioritizing reliability and observability in the infrastructure.

The ideal candidate will have extensive experience with cloud platforms and infrastructure management, aiming to optimize the performance and reliability of AI services. This hybrid position offers a competitive salary with performance bonuses and equity.

Qualifications

• 8+ years of extensive platform or infrastructure experience for Staff-level roles.
• 12+ years for Principal-level roles.
• Strong command of cloud platforms and containers for infrastructure management.

Responsibilities

• Design, build and operate cloud infrastructure for AI products.
• Implement observability across APIs and cloud services.
• Build and operationalize model serving and inference pipelines.

Skills

DevOps expertise

Cloud platforms (AWS, GCP, Azure)

Container orchestration (Docker, Kubernetes)

Infrastructure-as-code (Terraform)

Observability tools (Prometheus, Grafana)

AI/ML infrastructure

Data platform skills

Backend programming (Python, Go)

Job description

Location: New York City | Hybrid

Department: AI Platform & Infrastructure Team

Reports to: Vangie Shue - Principal Engineering Manager

About AppGate

AppGate secures and protects an organization's most valuable assets with its high performance Zero Trust Network Access (ZTNA) solution and Cyber Advisory Services. AppGate ZTNA is the only direct‑routed Zero Trust solution built for peak performance, superior protection and seamless interoperability. AppGate Cyber Advisory Services harden your security posture and ensure business continuity. AppGate safeguards enterprises and government agencies worldwide.

As we expand our platform, we are standing up a new AI Platform & Infrastructure team: the engine room of AppGate's AI strategy. This team owns the infrastructure layer that every next‑generation security capability is built on, from network observability to AI‑driven threat detection and the secure operation of emerging Agentic AI systems.

This is a rare opportunity to join a small, private, high‑impact company where your work directly shapes the architecture, reliability and core platform that defines the future of security.

About The Role

We're looking for a Staff or Principal Platform Engineer to build and operate the foundational platform behind AppGate's AI products. You combine deep DevOps and cloud infrastructure expertise with hands‑on experience operationalizing AI/ML systems, and you treat observability as a first‑class engineering discipline.

You'll own the platform spanning APIs, cloud services and AI/ML infrastructure, and you'll make it fast, reliable and observable at scale. This is a high‑leverage, hands‑on role for a senior engineer who sets technical direction and still ships.

Key Responsibilities

• Integrations: third‑party connectors, APIs and platform integrations
• Data Platform: real‑time and batch data ingestion pipelines, feature stores and data quality
• AI/ML Infrastructure: model serving, inference pipelines and experiment tracking
• MLOps: model deployment, versioning, drift monitoring and lifecycle management
• Platform Observability: SLOs, operational health metrics and reliability tooling for AI systems
• Build the platform: design, build and operate the cloud infrastructure, services and pipelines that AppGate's AI products run on
• Implement observability: instrument APIs, cloud services and AI/ML infrastructure with metrics, logging, tracing and alerting, and define SLOs and operational health metrics that teams trust
• Operationalize AI/ML: build model serving and inference pipelines, experiment tracking and the MLOps tooling for deployment, versioning, drift monitoring and lifecycle management
• Engineer for reliability: apply SRE practices to reduce toil, improve resilience and keep latency and uptime within target across the platform
• Automate everything: drive infrastructure‑as‑code, CI/CD and self‑service tooling so product teams ship safely and quickly
• Set technical direction: define platform standards, architecture and best practices, and raise the engineering bar through design reviews and mentorship
• Collaborate cross‑functionally: partner with data scientists, product teams and leadership to align platform investment with AppGate's strategic vision

Required Qualifications

• Experience: extensive platform, infrastructure or SRE engineering experience, with a track record of operating production systems at scale. Staff‑level candidates typically bring 8+ years and Principal‑level candidates 12+ years, though we hire on demonstrated impact
• DevOps depth: strong command of cloud platforms (AWS, GCP or Azure), containers and orchestration (Docker, Kubernetes), infrastructure‑as‑code (Terraform or equivalent) and CI/CD
• Observability expertise: hands‑on experience implementing observability across APIs, cloud services and distributed systems using tools such as Prometheus, Grafana, OpenTelemetry, the ELK stack or comparable, including SLO and error‑budget practice
• AI/ML infrastructure: experience building or operating model serving, inference pipelines and MLOps tooling such as MLflow, Kubeflow, SageMaker or equivalent, including model deployment, versioning and drift monitoring
• Data platform skills: familiarity with real‑time and batch ingestion pipelines, feature stores and data quality at production scale
• Engineering craft: fluency in a primary backend language (Python, Go or similar) and a strong bias toward automation, testing and reliable, maintainable systems
• Leadership: a record of setting technical direction, leading complex initiatives across teams and mentoring senior engineers
• Mindset: pragmatic, rigorous and ownership‑driven. You thrive in a small, fast‑moving environment and enjoy building foundations others depend on

Compensation

• Staff: 185k–225k base
• Principal: 215k–270k base
• We offer performance bonuses and considerable equity

AppGate is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status, age or any other federally protected class. In furtherance of AppGate's policy regarding affirmative action and equal employment opportunity, AppGate has developed a written affirmative action program. This program is available for review upon request by any applicant or employee during normal business hours by contacting the company's EEO Coordinator.