Jobs · Management

Principal Engineer, Tech Lead - Platform Integration Team

Horizon3.ai · United States · 3 wk ago
RemoteRemoteManagement$213k–$273k/yrFull-time

About the role

We are hiring a Principal Backend Engineer to serve as the Technical Lead for the Platform Integration team — a high-impact group whose mandate is critical to the scalability of our platform. You’ll be responsible for shaping the systems, architecture, and technical direction behind a product that helps security teams cut through the noise and prioritize actually fixing the weaknesses that represent real risk in their environment.

This role is for a senior individual contributor who leads through technical judgment, cross-functional partnership, and execution. The Platform Integration team helps push our existing APIs to be first-class citizens, building the consistent, well-documented foundation that powers every integration and allows customers to build their own agentic workflows atop our platform. This team will also build strategic integrations to unlock critical new features atop complementary data from users' own systems, meeting users where they are with their current tooling to drive the find-fix-verify loop with greater accuracy and less downtime.

The right candidate will be equally comfortable translating ambiguous product goals into concrete technical roadmaps, writing production code (primarily backend but with an understanding for frontend as well), mentoring other engineers, and influencing decisions across multiple projects and partner teams. As a Principal engineer, you will help shape longer-term technical direction with broader company impact and influence beyond a single domain. Initially, this role will split time 50/50 between hands-on coding and architectural design. Over time, as the team grows, you’ll spend more of your time on design and unblocking the team.

Responsibilities

  • Own the end-to-end technical vision for the Integration team and its supporting services, from initial concept through implementation, iteration, and long-term evolution.
  • Partner with cross-functional stakeholders to translate ambiguous product and business goals into concrete technical strategy, architecture, and execution plans for the Integration team.
  • Contribute production code, setting the standard for design quality, code quality, and operational rigor.
  • Lead architectural decisions for scalable backend systems that balance velocity, reliability, maintainability, extensibility, and operability.
  • Drive execution across multiple concurrent projects and initiatives, identifying risks, dependencies, and tradeoffs early and helping the team sequence work effectively.
  • Partner closely with Product, Engineering leadership, Design, and adjacent engineering teams to deliver cross-functional initiatives and ensure technical decisions reflect both business context and customer needs.
  • Communicate complex technical concepts clearly to both technical and non-technical audiences, including leadership stakeholders.
  • Set and continually raise the technical bar through architecture reviews, code reviews, technical writing, and strong engineering judgment under ambiguity.
  • Mentor and develop engineers on the team by providing thoughtful feedback, technical coaching, and frameworks that help others do the best work of their careers.
  • Support hiring by helping attract, interview, and calibrate strong engineering talent as the organization grows.

Requirements

  • Bachelor’s degree in Computer Science, Computer Engineering, or a related field, or equivalent practical experience.
  • 10+ years of professional software engineering experience.
  • Experience building backend services using at least one modern language, such as Python, Go, Java, TypeScript, or similar.
  • Experience working with SQL and at least one relational database in production.
  • Experience building backend services on a cloud platform (AWS, GCP, or Azure), and familiarity with Docker and containerized applications.
  • Deep expertise in software architecture, distributed or service-oriented systems, and the engineering tradeoffs involved in building durable, scalable products.
  • Strong technical leadership experience as a senior individual contributor or technical lead, with a track record of leading through influence rather than formal management authority.
  • Strong product judgment and the ability to translate business or customer needs into pragmatic technical decisions.
  • Experience working across multiple projects or workstreams at the same time while maintaining clarity on priorities, risks, and execution sequencing.
  • Proven ability to work effectively with cross-functional partners including Product, Design, Security, peer engineering teams, and senior leadership.
  • Strong written and verbal communication skills, including the ability to explain technical decisions and tradeoffs to non-technical stakeholders.
  • A history of mentoring engineers, elevating team performance, and improving engineering craft through design feedback, code reviews, and technical guidance.
  • Comfort operating in ambiguity and making sound decisions with incomplete information.
  • You think in terms of platforms and systems, not just features, and balance security, usability, and scalability in every decision.

Preferred Qualifications

  • Experience leading initiatives around API platforms, headless customer experiences, or agent-based customer flows.
  • Experience with an integrations platform, particularly with an eye to build speed for new integrations.
  • Experience with PostgreSQL and performance tuning for large datasets.
  • Experience with graph databases such as Neo4j or interest in learning them.
  • Experience building or consuming GraphQL backends.
  • Experience with ETL pipelines and data processing tools (e.g., Airflow-like frameworks, custom ETL jobs, or similar).
  • Experience with observability stacks (e.g., Datadog, Prometheus, Grafana) and instrumentation of services.
  • Experience in cybersecurity, vulnerability management, security analytics, security data platforms, or adjacent domains.

Required Tech Stack Experience

  • Backend development in one or more of: Go, Rust, Python, Java, or similar.
  • Designing and operating APIs, services, and asynchronous or event-driven systems.
  • Data modeling and persistence layers for product-grade backend systems.
  • Cloud-native application development and deployment patterns.
  • Observability, reliability, and operational best practices for production services.
  • Technical design documents, architectural proposals, and engineering standards that can be adopted by other teams.

What Sets You Apart?

  • Experience building products or platforms in vulnerability management, exposure management, security telemetry, or related cybersecurity domains.
  • Familiarity with risk scoring, prioritization systems, or data-intensive backend workflows.
  • Experience partnering closely with product managers to define and sequence an MVP without painting the team into a corner.
  • Experience helping define technical standards or practices adopted beyond your immediate team.
  • A track record of shaping technical direction more broadly across an organization, with influence extending beyond a single team or domain.

Travel

This job may require up to 10% travel to be successful. We meet as a team for project kick-offs and as a company annually. These in-person meetings are crucial to building a product, team, and culture we all can be proud of.

Pay

Base salary range: $213,000 - $273,000. The exact salary will be determined based on the selected candidate’s location, qualifications, experience, and relevant skills.

All full-time roles are eligible for an equity package in the form of stock options.

Benefits

  • Health, vision & dental insurance for you and your family.
  • Flexible vacation policy.
  • Generous parental leave.
  • Inclusive team culture that values diversity and promotes respect and collaboration.
  • Growth opportunities within a dynamic and fast-growing team.
  • Innovative and collaborative work environment.
  • Hybrid & remote work models depending on role and location.

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