Handshake

Senior Software Engineer, Annotations

Handshake
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5 hours ago

Base Salary

$208k - $260k/yr

Responsibilities

  • Build and scale tooling for creating, managing, prioritizing, and auditing annotation projects.
  • Design workflows and quality-control systems that improve task accuracy, throughput, and customer outcomes.
  • Develop performant full-stack features using Python, Node.js/TypeScript, React, PostgreSQL, and backend APIs.
  • Establish technical direction and make architectural tradeoffs for complex projects.
  • Partner with product, design, operations, and data teams to define requirements and deliver solutions.
  • Lead projects from concept through production delivery, rollout, monitoring, and iteration.
  • Mentor engineers and improve code reviews, architecture discussions, testing practices, observability, and operational health.

Requirements

  • At least 6 years of software engineering experience building and operating production systems.
  • Strong proficiency in Python, Node.js, TypeScript, React, PostgreSQL, and backend APIs.
  • Experience designing scalable, reliable software and making sound architectural tradeoffs.
  • Demonstrated ownership of complex projects from ambiguity through delivery.
  • Strong product judgment and ability to connect technical decisions to customer and business outcomes.
  • Excellent communication and collaboration skills with technical and non-technical partners.
  • Ability to write maintainable code, test thoughtfully, debug deeply, and address root causes.
  • Experience mentoring engineers and elevating team practices in a collaborative leadership environment.
  • Comfort working in a high-velocity environment with evolving priorities and requirements.
  • Preferred experience includes workflow, marketplace, operations, or internal-platform software; AI/ML data pipelines, annotation systems, evaluation workflows, or human-in-the-loop products; distributed teams, expert networks, or high-volume operational processes; and open-source or self-directed technical projects.

Benefits

  • Equity, competitive compensation, 401(k) match, and financial coaching.
  • Medical, dental, and vision coverage, plus mental health support and a $500 wellness stipend.
  • Paid parental leave, fertility benefits, and parental coaching.
  • $2,000 annual learning stipend.
  • Flexible PTO, 15 holidays, and 2 flex days.
  • Internet and commuting support, plus free lunch and gym access in the San Francisco office.
  • Team outings and referral bonuses; benefits listed apply to full-time US employees.
Handshake

About Handshake

10,000+ employees

Handshake builds a career network and recruiting platform that connects college students and recent grads with employers, sold as SaaS to universities and subscriptions/solutions to employers. Founded in 2014 and headquartered in San Francisco, it serves 1,600+ educational institutions and over 1 million employers. The company also operates Handshake AI, which partners with frontier AI labs on human data collection and evaluations for model training and post-training workflows.

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