Staff Full Stack Software Engineer

About Arkestro

Arkestro’s Predictive Procurement accelerates enterprise spend transformation, using AI and game theory to unlock trapped savings and reduce risk, enabling teams to influence significantly more spend. By combining AI with deep Negotiation Science, Supplier Science, and Process Science procurement teams can improve win-rates while strengthening supply chain agility.

As a fast-growing tech company, we’re looking for builders and innovators — people who thrive in the face of ambiguity and who have a selfless dedication to do whatever it takes to make Arkestro and our customers successful. We believe in egoless execution and we are looking for people who will work together to solve hard problems. If you're excited to help shape our future, contribute to our company culture, and help to drive our business forward there is a tremendous opportunity for you here at Arkestro!

About This Role

We're seeking a product-minded Staff Engineer to join our Product Engineering team and drive meaningful customer impact through technology. As a Staff Engineer at Arkestro, you'll be embedded directly with Product and Design teams, working as a true product partner who deeply understands our customers' procurement challenges and builds solutions that transform how enterprises manage spend.

You'll own end-to-end product features from conception to customer adoption, balancing technical excellence with iteration and customer feedback. This isn't just about writing great code — it's about understanding the "why" behind every feature, measuring its impact on customer outcomes, and continuously improving the product experience. You'll work closely with customers, analyze usage data, and make technical decisions that directly influence product success.

The ideal candidate combines strong engineering fundamentals with genuine curiosity about our customers' workflows and pain points. This role is perfect for an engineer who thrives at the intersection of technology and product strategy, and who gets energized by seeing customers achieve breakthrough results with the software you build.

Responsibilities

• Design and implement complex features and systems across our full-stack platform
• Lead technical initiatives and drive projects from conception through deployment
• Collaborate with Product Management, Design, and Data teams to translate business requirements into technical solutions
• Mentor junior and mid-level engineers through code reviews, pair programming, and technical guidance
• Contribute to architectural decisions and help establish technical standards and best practices
• Optimize application performance, scalability, and reliability
• Take ownership of technical debt reduction and system improvements
• Participate in technical planning, estimation, and sprint commitments
• Contribute to our engineering culture of quality, collaboration, and continuous learning
• Participate in on-call rotation to ensure system reliability

Technologies and Tools

Frontend:

• React
• TypeScript
• AntD
• Jest + React Testing Library

Backend:

• Ruby
• Rails
• Node
• Postgres
• Redis
• Sidekiq Pro
• RSpec

Fundamentals:

• Shell
• SQL
• Config file and environment configuration

Workflow and Deployment:

• Github
• AWS
• DataDog
• Jira
• Confluence
• Sentry
• Code Climate
• Pagerduty
• Slack
• Fellow

Required Qualifications

• 10+ years building customer-facing applications with high impact, in collaboration with Product Management, UX and Data teams
• 7+ years of Rails/Ruby experience with deep understanding of Rails conventions and best practices
• 6+ years React, JavaScript/TypeScript, and modern frontend development
• 4+ years working with AWS cloud services and deployment pipelines
• Experience with relational databases (PostgreSQL preferred) and query optimization
• Strong understanding of software architecture principles and design patterns
• Experience with testing frameworks and maintaining high test coverage
• Demonstrated ability to mentor other engineers and lead technical initiatives