Senior Software Engineer, Calculations and Allocations

What You'll Do

• Extend a financial expression language: MXL is Maybern's formula system — with its own parser, execution engine, type system, and audit framework. You'll add new functions and calculation contexts, optimize execution, and build tooling that makes complex financial logic composable and debuggable.
• Build workflow orchestration: Fund operations involve multi-step, stateful processes — capital calls, closings, fee postings — that must execute correctly across distributed systems. You'll design the runtime that coordinates these workflows.
• Model fund mechanics: Allocations, waterfalls, carry calculations, equalization — the financial primitives that determine how money moves through a fund. You'll translate intricate fund structures into configurable, auditable models that work across every customer's unique setup.

Who You Are

• You've built systems where correctness is non-negotiable — financial calculations, billing engines, trading systems, or similar domains where a rounding error is a production incident.
• You're drawn to abstraction design — building configurable primitives that generalize across use cases without collapsing under edge cases.
• You have strong opinions about how domain logic should be modeled and can translate a 30-minute conversation with a fund accountant into a clean data model.

This Could Be a Great Fit If You...

• Are comfortable working with server-side languages and frameworks (we're tech agnostic in interviews, but use Python and Django in practice).
• Have a solid grasp of relational databases and transactions - especially in contexts where correctness and auditability are non-negotiable.
• Have experience leading systems that are highly configurable and designed to handle significant variability across use cases.
• Are knowledgeable about platform/cloud technologies and distributed systems; AWS experience is a bonus.
• Are obsessed with details and genuinely excited to learn the mechanics of private markets (waterfalls, allocations, fund accounting) one workflow at a time.
• Have excellent written and verbal communication skills.
• Thrive in high-growth, fast-paced environments and can adapt as the product and team scale.
• Have experience building DSLs, formula engines, rule systems, or other user-programmable abstractions.
• Have designed or worked on workflow/orchestration systems (even simple state machines count).

Benefits

• Comprehensive healthcare benefits: Maybern covers 100% of medical, dental, and vision premiums.
• HSA & FSA plans.
• Paid parental leave.
• Flexible schedule.
• Flexible PTO / sick leave.
• WFH as needed to fit your needs.
• 401k.