Senior Backend Engineer – Ledger & Treasury (Remote)

Caliza; United States; Remote; USD 140,000 - 190,000; Full time

Benefits offered by this job

Health coverage

Paid time off

Home office allowance

Professional development

Team offsites

Job summary

Caliza is seeking a Senior Software Engineer, Back End for Accounting & Treasury to build and own ledger, reconciliation, and fiat/stablecoin workflows. You will work on double-entry accounting, multi-currency liquidity, and high-integrity money movement across rails and on-chain.

Collaborate with finance, compliance, and operations, write tests, ensure idempotency, and maintain audit trails. This remote role demands strong communication and autonomous, proactive problem solving in a fast-moving

Qualifications

• 5+ years of professional back-end development experience.
• Experience building ledgers, accounting systems, or other systems where correctness of money is critical.
• Solid understanding of double-entry accounting: debits, credits, balances and reconciliation.
• Strong experience with Kotlin or Java (we use Kotlin), and relational databases such as Postgres.
• Experience with exact decimal arithmetic, idempotency, and consistency in distributed systems.
• Experience with message-driven architectures (e.g. RabbitMQ).
• Hands-on experience with AI-assisted development in your daily work, with the judgment to review and question what the tools produce.
• Comfort with high autonomy and ambiguity in a fast-moving, remote startup.
• Clear written communication. Most of our collaboration is async.

Responsibilities

• Design, build and maintain ledger and treasury services in Kotlin and Spring Boot.
• Model money movement correctly with double-entry accounting, including returns, reversals, fees and FX.
• Build reconciliation between our ledger, bank statements and on-chain wallet balances, and surface breaks clearly.
• Make our systems idempotent and resilient, so retries and partial failures never create or lose money.
• Maintain immutable audit trails that support finance, compliance and external audits.
• Build the data and tooling that support liquidity management.
• Model yield-bearing and financing instruments in the ledger, from simple to complex.
• Write thorough tests and review your teammates’ code.

Skills

Kotlin

Java

Double-entry accounting

Distributed systems

AI-assisted development

Autonomy

Written communication

Tools

PostgreSQL

RabbitMQ

Job description

Caliza is seeking a Senior Software Engineer, Back End for Accounting & Treasury to build and own ledger, reconciliation, and fiat/stablecoin workflows. You will work on double-entry accounting, multi-currency liquidity, and high-integrity money movement across rails and on-chain.

Collaborate with finance, compliance, and operations, write tests, ensure idempotency, and maintain audit trails. This remote role demands strong communication and autonomous, proactive problem solving in a fast-moving