Senior Data Platform Engineer

Position Overview

• Location Type: Remote
• Employment Type: Full-time
• Salary: Not specified

Description: Apollo.io is a leading go-to-market solution for revenue teams, trusted by over 500,000 companies and millions of users globally. They provide sales and marketing teams with verified contact data and tools to engage and convert prospects into customers. Apollo raised a series D in 2023 and is backed by top-tier investors, including Sequoia Capital, Bain Capital Ventures, and more. As a Senior Data Platform Engineer, you’ll play a key role in designing and building the foundational data infrastructure and APIs that power their analytics, machine learning, and product features. This is a hands-on engineering role with opportunities to influence architecture, tooling, and best practices across their data ecosystem.

Responsibilities

• Architect and build robust, scalable data pipelines (batch and streaming) to support a variety of internal and external use cases.
• Develop and maintain high-performance APIs using FastAPI to expose data services and automate data workflows.
• Design and manage cloud-based data infrastructure, optimizing for cost, performance, and reliability.
• Collaborate closely with software engineers, data scientists, analysts, and product teams to translate requirements into engineering solutions.
• Monitor and ensure the health, quality, and reliability of data flows and platform services.
• Implement observability and alerting for data services and APIs (think logs, metrics, dashboards).
• Continuously evaluate and integrate new tools and technologies to improve platform capabilities.
• Contribute to architectural discussions, code reviews, and cross-functional projects.
• Document your work, champion best practices, and help level up the team through knowledge sharing.

Competencies

• Excellent Communication Skills: Ability to work with engineering, product, and business owners to develop and define key business questions and build data sets that answer those questions.
• Self-Motivated & Self-Directed: Ability to work independently and take initiative.
• Inquisitive: Able to ask questions and dig deeper into problems.
• Organized & Detail-Oriented: Strong organizational skills and attention to detail.
• Integrity: Acts with the utmost integrity.
• Curious & Open: Genuinely curious and open; loves learning.
• Critical Thinking & Problem-Solving: Proven problem-solving skills.