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Block · 3 days ago

Senior Staff Machine Learning Engineer, AI Engineering Tools

United States

Full-time

Remote

Senior Level, Lead/Staff

$277K/yr - $415K/yr

12+ years exp

Block is a company focused on economic empowerment through innovative technology. The Senior Staff Machine Learning Engineer will work on AI-driven developer tools to enhance the software development lifecycle and improve coding efficiency across the organization.

Financial Services

H1B Sponsor Likely

Responsibilities

Design and build AI-driven developer tools that integrate seamlessly into the software development lifecycle (e.g., intelligent code assistance, inline reviews, or automated refactoring systems)

Partner with vendors and internal teams to evaluate, integrate, and optimize AI engineering tools

Collaborate with engineering leaders across Block to identify opportunities for AI integration that improve developer velocity and code quality

Mentor engineers, contribute to design and code reviews, and help establish best practices for building reliable AI systems at scale

Qualification

AI-driven developer toolsLLMsPrompt engineeringIntegrating third-party AI modelsScalable backend systemsApplied ML workflowsIDEsCommunication skillsCross-functional collaboration

Required

12+ years of experience building and shipping production systems

Strong software engineering background, with fluency in designing scalable backend systems

Deep understanding of LLMs, prompt engineering, and applied ML workflows from experimentation and evaluation to deployment and monitoring

Experience integrating third-party AI models (e.g., OpenAI, Anthropic, or custom fine-tuned models) into real-world tools or services

A pragmatic approach to experimentation and iteration, balancing innovation with reliability and security

Strong communication and cross-functional collaboration skills, especially with engineers, product managers, and leadership

Preferred

Familiarity with developer ecosystems, IDEs, or productivity platforms is a plus (e.g., VS Code, Cursor, GitHub Copilot, etc.)

Benefits

Remote work

Medical insurance

Flexible time off

Retirement savings plans

Modern family planning

Company

Block

Glassdoor3.9

Block is one company built from many blocks, all united by the same purpose of economic empowerment.

Founded in 1990

Oakland, California, US

10001+ employees

https://block.xyz/

H1B Sponsorship

Block has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)

Distribution of Different Job Fields Receiving Sponsorship

Represents job field similar to this job

Trends of Total Sponsorships

2025 (257)

2024 (253)

2023 (260)

2022 (297)