[Remote] Sr. Software Engineer (Platform + AI)

Note: The job is a remote job and is open to candidates in USA. Bloomerang is a company focused on empowering nonprofits through technology and support. They are seeking a Senior Software Engineer to work on their Platform Engineering team, responsible for building and maintaining backend services and AI-driven development tools to enhance their giving platform.

Responsibilities

• Write code in a shared codebase every day with the rest of the team—pulling work from our Kanban board, mobbing (ensemble programming) on the hard problems, reviewing your teammates’ work and having yours reviewed, and helping the team surface and clear bottlenecks in a continuous-flow model
• Design, build, and own backend services at the core of our platform—in the near term, our authentication chain (centralized authentication and session management), advancing toward a unified identity solution, primarily in C#/.NET
• Operate what you build—instrument it, watch it in production, take your turn in the on-call rotation for the services your team owns, and be the one who fixes it when it breaks
• Build and own the agentic harness Bloomerang engineering runs on—agent workflows, tool and model integrations, orchestration, and the guardrails and evaluation infrastructure that keep AI-driven development reliable and safe
• Use the throughput AI-driven development unlocks to follow through on delivery—ship minimum viable increments, then gather real customer feedback, run A/B tests, measure what shipped, and iterate until it makes a meaningful difference for nonprofits. The work doesn’t stop at the MVP; we use the time AI gives back to deliver the functionality, quality, security, and the rest of the -ilities our industry has always wanted to and rarely had time for
• Build and maintain the cross-cutting AI-platform pieces the org shares—standardized prompt and context pipelines, consolidated local development environments across our products and teams—and keep token spend efficient without ever trading away quality or completeness
• Continually evaluate new models, AI tools, harnesses, and approaches—running rigorous evals and turning the winners into paved-road tooling the whole organization can rely on
• Diagnose and resolve complex technical bottlenecks across distributed services and the AI tooling that sits on top of them, leveraging deep knowledge of debugging and observability tools to keep our SaaS platform fast and reliable
• Use your experience to shape our software and delivery tooling—raising the bar on engineering standards, teaching and learning alongside the organization, and helping us ship better products for the nonprofits we serve
• Partner with Product, DevOps, and across Engineering to solve broad infrastructure and platform problems—and to design and deliver solutions that are scalable, maintainable, reliable, and secure
• Actively explore, learn, and responsibly integrate AI into your work—and help shape Bloomerang’s AI culture as we lean into it
• Model high standards of technical excellence, ownership, and continuous learning
• Own the quality of your work end to end—you are accountable for what you ship and you raise the quality bar for the codebases and tooling you touch

Skills

• Recent, hands-on team experience: within the last two years you have owned a service in production as part of an engineering team—built it, shipped it, operated it, and carried the pager for it with teammates
• Strong C#/.NET proficiency is ideal but not a deal breaker—we care most about your ability to own backend services end to end and ramp quickly on our stack
• Genuine AI fluency and hands-on experience building with AI—agents, tools, harnesses, prompt and context pipelines, or evals—not just consuming AI to code faster
• A senior-level ownership mindset paired with a collaborative default: you can take an ambiguous problem and drive it to a shipped, reliable solution, and you would rather do that shoulder to shoulder with the team than on your own
• Ability to improve the engineering standards, automation, developer tooling, and AI harness the team relies on
• Proficiency across a diverse range of frameworks, languages, databases, and tools; strength in C#/.NET is ideal
• Familiarity with the agentic-tooling ecosystem (model APIs, MCP, LLM orchestration) is a strong plus
• Experience with foundational platform or distributed systems; authentication, identity, security, MFA, SSO, or session management is a strong plus
• Comfort in the Python/TypeScript that agentic tooling often lives in is a plus

Benefits

• Generous health, vision, and dental insurance options
• HealthiestYou, a healthcare service that offers convenient, confidential access to quality doctors 24/7, anytime, anywhere.
• Competitive PTO package that includes 20 PTO days, 3 flex days, 4 optional volunteer days, 12 paid holidays
• Paid parental leave. More is more!
• 401k match to help invest in your future.
• Everything you need to be successful, shipped right to your door.
• This is a permanent, full-time, fully remote position (within the U.S. and select Canadian Provinces only).
• Employees living in Indianapolis, IN are welcome to work from our company headquarters.

Company Overview