Staff Frontend Engineer (TypeScript, React)

sentinellabs; United States; Remote; USD 150,000 - 210,000; Full time

Benefits offered by this job

RSU equity

Employee stock purchase plan

Paid time off + wellness days

Parental leave

Private medical care

Life and disability insurance

Pension contribution

Employee assistance program

Remote/hybrid options

Job summary

sentinellabs is seeking a Staff Frontend Engineer to build new functionality for a data-lake security product line that processes massive data daily. The role blends hands-on software development with technical leadership, shaping threat intelligence solutions on the platform.

You will own 70–80% hands-on work in TypeScript/React, draft specs with product management, and elevate quality, security, and architecture.

Qualifications

• Strong experience building production apps with TypeScript and React.
• Experience with GraphQL and REST APIs.
• Demonstrated technical leadership and architectural influence.
• Excellent communication across product and engineering teams.
• Ability to learn new domains quickly.
• Familiarity with AI-assisted development workflows.

Responsibilities

• Develop features in TypeScript/React with high performance.
• Draft and review technical specs with product management.
• Improve quality, stability, and security of the codebase.
• Mentor teammates through pairing and code reviews.
• Collaborate with distributed teams across time zones.
• Contribute to architecture for AI-driven capabilities.

Skills

TypeScript

React

GraphQL

REST APIs

Technical leadership

Cross-team collaboration

Mentoring

Job description

Role overview

Staff Frontend Engineer position focused on building new functionality for a data-lake security product line that processes several petabytes of data daily. The role blends hands‑on software development with technical leadership, shaping how security teams hunt threats and build threat intelligence solutions on the platform. It is a senior, product‑oriented engineering seat with significant influence over roadmap and architectural direction.

Responsibilities

• Spend roughly 70–80% of the time on hands‑on software development in TypeScript and React
• Draft and review technical specifications, partnering with product management to refine scope and priorities
• Improve quality, stability, and security across the team's full codebase
• Conduct code reviews and mentor teammates through pairing, problem-solving, and constructive feedback
• Participate in daily standups and collaborate with distributed teams across multiple time zones
• Contribute to architectural decisions for new AI-driven capabilities and large-scale performance/cost objectives

Requirements

• Strong proficiency building production applications in TypeScript and React
• Working knowledge of GraphQL and REST APIs
• Demonstrated technical leadership, including shaping engineering best practices and driving adoption
• Excellent communication skills with frequent cross-team interaction between product and engineering
• Ability to quickly learn new products and understand their internals
• Familiarity with AI-assisted development tools and workflows

Nice to have

• Experience working on data-intensive or analytics-heavy products
• Background building security, threat intelligence, or developer-facing tooling
• Comfort collaborating across hybrid and remote team setups

Benefits and work setup

• Equity participation through restricted stock units, an employee stock purchase plan, and performance-based bonus
• Generous paid time off plus wellness days, sick/nursing leave, and gender-neutral parental leave
• Private medical care, life and disability insurance, pension contribution, and an employee assistance program
• Hybrid working arrangements in Prague (Karlin) or Brno offices, with fully remote options in the local market