Arkestro's Predictive Procurement Platform applies AI, game theory, and behavioral science to enterprise negotiations. It moves teams away from reactive supplier bidding toward data-driven offers that reduce friction and help both buyers and suppliers reach better outcomes faster. Arkestro helps procurement teams influence more enterprise spend and uncover savings that traditional sourcing approaches often leave behind by applying predictive intelligence to how sourcing events are designed and executed. We’re a hyper-growth company looking for people who take ownership and are comfortable working through complexity. This is a tremendous opportunity if you want to do meaningful work and help shape how large enterprises run procurement… Arkestro is a place where you can have a big impact.  See Arkestro in action at arkestro.com. We’re looking for a strong Fullstack Senior Software Engineer with a passion for delivering product solutions to join our Product team and help us scale our platform and deliver cutting edge capabilities to our customers. This engineer will be an integral part of the team that designs, builds and innovates our product. The right candidate will collaborate with a phenomenal group of software engineers, data scientists, product managers, product designers and quality engineers to deliver and scale a transformational software product.  Responsibilities * Autonomously deliver ongoing business impact across a team, product capability, or technical system. * Collaborate with QA engineers to ensure designs are technically feasible. * Collaborates with the product team to ensure quality throughout the SDLC and product release cycles * Work with Product Management to estimate and commit. * Work with Staff Engineers to ensure architecture aligns with organizational goals. * Implement best practices, methodologies, and tools to optimize the development process and increase efficiency. * Communicate effectively with stakeholders, including senior leadership, to provide updates on project status, risks, and issues. * Participate in on-call rotation Technologies and tools we use: * Frontend: React, TypeScript, AntD, Jest + React Testing Library, Playwright * Backend: Ruby, Rails, Node, Python, Postgres, Redis, Sidekiq, RSpec * Fundamentals: Shell, SQL, config file, and environment configuration * Workflow and Deployment: Github, AWS, DataDog, Jira, Confluence, Qlty * Agile Development Methodologies: Kanban, Scrum * Artificial Intelligence: Prompt engineering, harness engineering Qualifications: * 6yrs+ building customer-facing applications professionally in collaboration with Product Management, UX and Data * 6yrs+ of Rails/Ruby * 4yrs+ React, JavaScript/TypeScript, NextJS, CSS, Figma. * 3yrs+ of Architecting Full Stack Applications * 2yrs+ of AWS and/or Kubernetes with Istio * 6 months+ of SDLC AI native usage via Claude Code, Claude Cowork or similar Bonus Qualifications * Experience working in fast moving environments with on-call rotations and documented SLAs, SLOs, RPOs, and RTOs. * Google Suite * Jira, Confluence, Slack, Fellow * Pagerduty, Datadog, Sendgrid, Code Climate Pay Range $160,000—$180,000 USD Arkestro is committed to providing our employees with a benefits package designed to give you the flexibility you need to ensure a healthy life/work balance. Arkestro offers our employees great benefits and perks, including, but not limited to: * Competitive salary and startup equity * Medical, Dental, Vision insurance premiums covered up to 100% (employee only) * 401K discretionary employer matching * Unlimited PTO * A remote-first team with regular opportunities to get together in person for team building, design sprints, and customer visits * Annual budget of $1,000 for learning and professional development * Diverse, inclusive, highly collaborative, and vibrant culture Arkestro is an equal opportunity employer that is committed to diversity and inclusion in the workplace. We prohibit discrimination and harassment of any kind based on race, color, sex, religion, sexual orientation, national origin, disability, genetic information, pregnancy, or any other protected characteristic as outlined by federal, state, or local laws.   Disclaimer Please note this job description may not be inclusive of all assigned duties, responsibilities, or aspects of the job described and that additional tasks may be assigned to the employee from time to time; or the scope of the job may change as necessitated by business demands. Arkestro reserves the right to change duties, responsibilities and activities at any time with or without notice.