Senior Software Engineer

Who you are

• 4+ years shipping production backend services, ideally on a modern web framework
• Strong proficiency in PHP / Laravel, or the kind of adjacent framework fluency that ramps quickly (we won't rule you out for having lived in Rails, Django, or Spring)
• Deep familiarity with REST API design, HTTP semantics, and the patterns that make an API worth building against
• Solid SQL, MySQL specifically or comfortable enough with another relational database to speak to the trade-offs you've made
• Experience building against real-world third-party APIs, not just the pristine documented examples
• Comfortable designing async job workflows, queued work, and observable failure paths
• Strong instincts around OAuth, webhooks, and the trust-boundary decisions that keep a public API safe and honest
• Active use of terminal-based AI development tools (Claude Code, Cursor, or similar) with a clear review discipline for what the agent produces
• Experience contributing to on-call rotation for production services
• Comfortable navigating an existing monorepo (ours is real, and PHP / Laravel is most of the backend)
• Contributions to a public API you helped design (bonus if it survived a v2)
• You've built your own AI tooling, custom skills, or agent workflows, not just used the defaults
• Familiarity with the emerging surface where AI agents consume APIs on behalf of end users, and opinions about what a legible API looks like to a non-human caller
• You have opinions about the difference between a specification and an implementation (OAuth 1 vs 2, JSON:API vs REST, GraphQL and what came after: any of it, all of it)
• Nonprofit or mission-driven experience

What the job involves

• Givebutter is hiring a Senior Software Engineer, Integrations, to join our Growth pod
• Nonprofits live inside dozens of tools they already love: CRMs, accounting, volunteer platforms, AI assistants
• This role decides how well Givebutter meets them there
• You'll shape our public API into something builders and their AI agents actually want to reach for, and hold the partner surfaces we care about most as they grow with us
• Most of this work happens in the space between two systems: reading partner docs, spiking to see what breaks, sitting on calls with external engineers, closing the ambiguity that turns "maybe we could" into "here's how."
• Own one or more of our partner integration surfaces end-to-end, and hold them coherent as sales, success, and product shape them further
• Shape our public API as its audience grows to include AI agents building on behalf of nonprofits who don't code themselves
• Spike, prototype, and de-risk new partnerships, including the ones we don't yet know how to build, and the ones that only ship because someone had an aha moment
• Design and defend API contracts, webhook shapes, and data flows that other engineers (and other agents) will build against for years
• Partner with an existing integrations lead on the surfaces they hold today, and grow into shared ownership over time
• Partner with Product, Growth, Marketing, and occasionally an external partner engineer, as a natural translator between what each group needs

The application process

• Deadline to Apply October 2, 2026 at 7:00 AM UTC
• Recruiter Screen: A 30-minute conversation to learn more about your background, walk through the role, and ensure mutual alignment on expectations, values, and logistics
• Hiring Manager Interview: A deeper dive into your relevant experience, skillset, and working style. This is your first opportunity to connect directly with the person who may be your future manager
• Assessment (technical or non-technical): This stage will vary based on the role. It could involve a live coding session, case study, or take-home project. Some roles may include two parts to this stage to evaluate both practical skills and problem-solving approaches
• Values Interview: A conversation with team members focused on how you align with our core values and leadership principles
• References: We connect with a few folks you’ve worked closely with to get a better picture of your working style and impact
• Offer: If all goes well, we’ll move to the offer stage!
• Please note, we will have an AI note-taking tool join most of our interviews

Benefits

• Health Insurance: Enroll in Medical, Dental, and Vision insurance covered 100% for employees
• 401(k): We offer access to a retirement planning account for all employees, with a 3% company match
• Parental Leave: Receive 12 weeks paid parental leave for both primary and secondary caregivers
• Vacation and Holiday: Givebutter offers a Flexible PTO policy with uncapped Vacation days. Givebutter is closed for a whole week in the summer for an employee Wellness Week
• Mental Health Support: Access a free membership to Talkspace, which includes unlimited messaging and one free video per month
• Charitable giving - employees are encouraged to donate up to $50/month to any verified nonprofit they wish to support on Givebutter
• Home Office Stipend: Upgrade your home office with company-sponsored expenses including high-quality laptops, monitors, and modern technology
• Charitable Giving: Donate up to $50/month to any verified nonprofit you wish to support on Givebutter
• Professional Development: Grow through learning and development reimbursement opportunities