Full Stack Software Engineer
JustAISan Francisco, CAposted 2h ago
- PayUSD / yr
- $120k – 160k
- Where
- San Francisco, CA
- Posted
- Oct 10
- 2 hours ago
- Type
- Full-time
- Setup
- On-site
At a glance
Build and ship end-to-end customer features across JustAI’s full stack, partnering with product and design to turn ambiguous needs into reliable AI-powered marketing workflows.
Summarized by AI from the original posting
What you'll do
- Design, implement, and QA large customer features end-to-end
- Own projects from initial scoping through production
- Break ambiguous problems into milestones with measurable outcomes
- Own quality and outcomes across testing, launch, and rollout
- Partner with product and design teams
- Evaluate technical feasibility and product experience tradeoffs
Requirements
- 012+ years of industry experience in full-stack engineering
- 02Strong backend skills
- 03Experience building platforms end-to-end
- 04Ability to learn quickly
- 05Thrives in a fast-paced, constantly evolving environment
Perks
Skills
Full description
Role Overview
We’re looking for a Full Stack Software Engineer to design, implement, and QA large customer features, end-to-end. In this role, you’ll work with product and design teams to scope emergent customer needs and design and implement solutions across our entire stack.
What You’ll Do
- Take responsibility for projects from initial scoping to production, breaking large, ambiguous problems into clear milestones with measurable outcomes
- Own quality and outcomes across the full lifecycle, including testing, launch, and rollout
- Partner closely with product and design, scoping and evaluating tradeoffs between technical feasibility and product experience
Qualifications
- 2+ years of industry experience in full-stack engineering, with strong backend skills
- Experience in building platforms end-to-end, with a focus on product requirements
- You are a quick learner, and you thrive in a fast-paced, constantly evolving environment
Why Join JustAI
- High ownership, high impact - your work defines how AI meets real customer workflows
- Founding-stage startup backed by YC & Peak XV (Sequoia), and growing fast
- Work with leadership from Twitter, Pinterest, and Goldman Sachs
- Competitive salary and meaningful equity
About JustAI
The future of Marketing is 1-1 hyper-personalized messaging. However, marketers spent multiple cycles setting up an "octopus" on CRM journey builders to manually write content for each persona and segment. Further, A/B testing is sequential and takes weeks to show results.
We drift away from the old school A/B testing world to dynamic testing. Companies can test 100+ messaging variants within a month, let AI optimize traffic for winning variants, and walk away with insights without operational setup overhead for every A/B test. We put companies in a state of continuous "always-on" testing.
Compensation: $120K - $160K
Experience: 1+ years