Senior Infrastructure Engineer

Fluxx is looking for a highly motivated Senior Infrastructure Engineer to join our Engineering team.

As a Senior Infrastructure Engineer, you’ll own the infrastructure and pipelines behind the leading grants management software for philanthropy—the platform that connects Donors and Doers. Collaborating closely with Engineering, you’ll build, deploy, and secure our infrastructure while playing a key role in setting technical direction. You’ll lead projects across CI/CD, our delivery and orchestration platform, and monitoring and logging. You’ll also be responsible for infrastructure resilience and cloud costs as part of the team.

We are looking for people who are curious, tenacious, intellectually honest, and have a bias toward action. We welcome diverse perspectives and encourage you to apply if you think you can bring value to our team—even if your experience doesn’t perfectly match the job description.

• You debug systems and the processes around them. You are capable of resolving an incident and fixing the conditions that allowed it
• You work in both software engineering and operations, understanding what runs where and how to configure the infrastructure to smoothly deliver great service to our clients
• You’re pragmatic. You know the vision, and deliver in steady increments toward that vision rather than waiting for perfect
• You teach and guide teams to better practices. You understand Rome wasn’t built in a day
• You love resolving issues related to latency, scalability, and performance of core infrastructure
• The thing that really floats your boat is making systems better, not just building new stuff
• You bring a collaborative educational mindset
• You want to work with others, learn from them, and teach your experiences
• You own outcomes, not just tickets. A task is finished when the system is more reliable, not when the PR merges
• You are a curious, proactive learner who explores emerging technologies and evaluates their practical application within our infrastructure

• →Automate our infrastructure and operational processes with infrastructure as code and standard tooling
• →Own our CI/CD pipelines, image builds, and GitOps deployments with ArgoCD
• →Keep our fleet patched and current, from OS updates to Kubernetes and managed-service upgrades
• →Build monitoring and alerting that catches problems before customers do
• →Partner with our security team to protect our systems and customer data, support SOC 2 compliance, and work security findings through to their remediation 
• →Build self-serve tools for Engineering to reduce bottlenecks and dependencies
• →Work with engineering teams to make our services reliable, secure, and scalable
• →Take part in our on-call rotation for production systems as needed

• →4+ years of professional software development and infrastructure operations experience
• →Deep professional experience managing Kubernetes in production, including creating manifest templates for services, deployments, and other application components
• →Significant experience writing and using Terraform code to deploy production infrastructure on AWS
• →Significant experience managing the full lifecycle of AWS services such as EKS, RDS, Elasticsearch, and WAF, including version upgrades, scaling, and failover
• →Familiarity with Azure and cross-cloud infrastructure
• →Experience with AI coding tools (Claude Code, Cursor, Codex, or similar) to streamline development workflows and use them as a force multiplier

Fluxx is committed to fair, transparent, and equitable compensation practices. We use a market-based approach that considers cost of labor by geographic region, along with company size and industry benchmarks.

This role is categorized into three compensation tiers based on location, with the following expected annual on-target earnings (base salary + commission):

$185,000 - $200,000 (SF/NY)

$165,000 - $180,000

The successful candidate’s starting salary will be determined based on, but not limited to, (a) location; (b) individual candidate skills and qualifications; and (c) individual candidate experience. 

Fluxx is committed to fair and equitable compensation practices. We take a market-based approach to pay, which may vary depending on your location. Locations are categorized into one of three zones based on a cost-of-labor index for that geographic location and our compensation philosophy. 

We are a people-first and inclusive workplace committed to continuous learning. We pride ourselves on having a diverse workforce, and we do not discriminate against any employee or applicant because of race, creed, color, religion, gender, sexual orientation, gender identity/expression, national origin, disability, age, genetic information, veteran status, marital status, pregnancy or related condition, or any other basis protected by law. We respect the gender, gender identity, and gender expression of our applicants and employees. It is our policy to comply with all applicable national, state, and local laws pertaining to nondiscrimination and equal opportunity.