Sr. Software Engineer (Platform + AI)

At Bloomerang, we believe change happens on purpose. We champion the power and potential of nonprofits, igniting next-level impact with the team and technology built for purpose. Our powerful giving platform and stellar support enable tens of thousands of nonprofits to raise more, recruit more, and retain more, fueling maximum impact and raising the bar on what’s possible for the nonprofit sector. That's why, even as the nonprofit sector sees declines in giving, Bloomerang customers raise more year over year.

We're also in the business of creating thriving employees. Join a mission-driven culture built on our core values of Simplify, Care and Act. We know our people are the key to our success, and we're proud to be home to some of the most innovative and skilled individuals in the workforce today. Come feel invigorated and unstoppable with us!

The Role

As a Sr. Software Engineer on the Platform Engineering team at Bloomerang, you are a hands-on engineer on a hands-on team. You write code in a shared codebase every day alongside your teammates, pull work from our Kanban board, mob with the team on the hard problems, and stay on the hook for what you ship after it goes live. This is a build-and-operate role, not an architecture role—nothing here gets designed on a whiteboard and handed off to someone else to implement.

You work across two pillars. You go deep on the systems the entire platform depends on—in the near term, our authentication chain (centralized authentication and session management) as we drive toward a unified identity solution—and you build and own the AI harness our engineering organization runs on: the agentic tooling, orchestration, and evaluation infrastructure that turns frontier models into reliable, everyday engineering leverage. You write and own high-quality C#/.NET services, and you use the throughput AI unlocks the way it should be used—not just shipping faster, but following through with real customer feedback, measurement, and iteration until the work makes a meaningful difference for nonprofits. You thrive in an agile environment, embrace the future of AI-driven development, and raise the bar for the engineers around you.

What You Will Do

• 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.

What You Need to Succeed

• 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. This matters to us more than your title and more than your years.
• 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; familiarity with the agentic-tooling ecosystem (model APIs, MCP, LLM orchestration) is a strong plus.
• 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.
• Experience with foundational platform or distributed systems; authentication, identity, security, MFA, SSO, or session management is a strong plus.
• 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, and comfort in the Python/TypeScript that agentic tooling often lives in is a plus.

Benefits

Health + Wellness
You’ll have access to generous health, vision, and dental insurance options as well as HealthiestYou, a healthcare service that offers convenient, confidential access to quality doctors 24/7, anytime, anywhere. 

Time Off
You'll get a competitive PTO package that includes 20 PTO days, 3 flex days, 4 optional volunteer days, 12 paid holidays, as well as paid parental leave. More is more!

401k
You'll receive a 401k match to help invest in your future.

Equipment
Everything you need to be successful, shipped right to your door. You got this. We got you.

Compensation 
The salary range for this position is $114,800 - $191,400. You may also be eligible for a discretionary bonus. Actual compensation within the range will be dependent on your skills, experience, qualifications, and location, as well as applicable employment laws

Location
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. We do not offer Visa sponsorship or relocation assistance at this time.

Accommodations
Applicants who require accommodations may contact [email protected] to request an accommodation in completing an application.

Bloomerang is an Equal Opportunity Employer. Individuals seeking employment at Bloomerang are considered without regard to race, color, religion, national origin, age, sex, marital status, ancestry, physical or mental disability, veteran status, gender identity, or sexual orientation.