Damin Mutti

Founder and CEO of ZeraBooks, AI bookkeeping that books and reconciles bank and card statements and closes the month. Teams at top-10 U.S. accounting firms use our converter.

Joined on Feb 7, 2026 https://www.zerabooks.com

Work

Founder & CEO at ZeraBooks

Damin Mutti for ZeraBooks

Oct 18

A break-even model for bookkeeping costs: when does a hire beat a freelancer?

#typescript #smallbusiness #accounting #modeling

4 min read

Damin Mutti for ZeraBooks

Oct 18

The trust account invariant: one bank balance, many owners, and the check that catches commingling

#accounting #python #datamodeling #realestate

4 min read

Damin Mutti for ZeraBooks

Oct 18

Building a construction WIP schedule in Python: percent complete, over and under billing, and the month-end entry

#accounting #python #construction #datamodeling

4 min read

Damin Mutti for ZeraBooks

Oct 18

Pairing inter-account transfers across bank statements with pandas

#python #pandas #dataanalysis #fintech

4 min read

Damin Mutti for ZeraBooks

Oct 17

Writing a transaction CSV that Google Sheets imports correctly: locale, decimals and formula injection

#csv #googlesheets #python #fintech

4 min read

Damin Mutti for ZeraBooks

Oct 17

Migrating books between providers: tying opening balances to bank statements, with uncleared items

#accounting #python #datamigration #fintech

4 min read

Damin Mutti for ZeraBooks

Oct 16

Parsing OFX bank files by hand: SGML without end tags, GMT dates and backwards card signs

#python #parsing #fintech #xml

4 min read

Damin Mutti

Oct 15

Parsing QFX files: an annotated sample, FITID dedupe, and the pitfalls that bite

#parsing #fintech #python #dataengineering

4 min read

Damin Mutti

Oct 15

The software stack a small CPA firm actually runs, one job at a time

#accounting #productivity #saas #smallbusiness

4 min read

DEV Community

Damin Mutti

Badges

Writing Debut

Organizations

ZeraBooks

Skills/Languages

Currently hacking on

Available for

A break-even model for bookkeeping costs: when does a hire beat a freelancer?

The trust account invariant: one bank balance, many owners, and the check that catches commingling

Building a construction WIP schedule in Python: percent complete, over and under billing, and the month-end entry

Pairing inter-account transfers across bank statements with pandas

Writing a transaction CSV that Google Sheets imports correctly: locale, decimals and formula injection

Migrating books between providers: tying opening balances to bank statements, with uncleared items

Parsing OFX bank files by hand: SGML without end tags, GMT dates and backwards card signs

Parsing QFX files: an annotated sample, FITID dedupe, and the pitfalls that bite

The software stack a small CPA firm actually runs, one job at a time