Performance Engineer

Energy Innovation Corp; San Jose (CA); Hybrid; USD 88,000 - 133,000; Full time

Job summary

DataFlow Systems in San Jose, CA seeks a junior Performance Engineer to own deliverables and grow within a high-trust team. The role focuses on Express.js decision-making and building tooling to speed up the platform.

Your work will include shaving milliseconds on the hot path, coordinating delegation configs across environments, and contributing to Kubernetes-based operations in a temporary setting. This contract offers mentorship, benefits, and the chance to grow without relocating from CA.

Qualifications

• Junior professional ready to own deliverables
• Experience with Express.js in production environments
• Familiar with Kubernetes in temporary settings
• Willingness to commute to San Jose, CA or work flexibly

Responsibilities

• Reduce latency on the critical path to improve user experience
• Wrangle Delegation config across environments to mirror production
• Build the Express.js tooling that speeds up San Jose engineers
• Reduce cold-start times for Delegation across regions
• Take features from whiteboard to San Jose, CA production

Skills

Express.js

Kubernetes

Deliverables ownership

Communication skills

Tools

Express tooling

Job description

At DataFlow Systems, the best Performance Engineer isn't the one who writes the most code but the one whose Express.js decisions age the gracefully. A $88,000 - $133,000 temporary role for a junior professional ready to own deliverables and grow within a high-trust team.

Key Responsibilities

• Shave milliseconds off the technology hot path that DataFlow Systems users feel every click
• Wrangle Delegation config across environments so San Jose staging mirrors production
• Build the Express.js tooling that makes every other San Jose engineer faster
• Cut Delegation cold-start times so DataFlow Systems functions wake before CA users notice
• Carry features from whiteboard sketch to San Jose, CA production without dropping the baton

What You'll Bring

• The reflex to surface risk before it surfaces itself
• The self-awareness to know which problems are yours to solve
• Willingness to commute to San Jose, CA or work flexibly as needed
• Practical Kubernetes skills sharpened in a temporary setting
• Real curiosity about why DataFlow Systems customers do what they do
• Strong rapport-building skills and a genuinely positive presence
• Excellent written and verbal communication skills

DataFlow Systems was founded in San Jose, CA on the idea that technology should be powerful yet refreshingly detail-focused. We celebrate Express.js craftsmanship and hold ourselves to a high bar on the details that matter.

We start the conversation at $88,000 - $133,000 and end it with mentorship, benefits, and the flexibility to grow without relocating from CA.