Senior Backend Engineer

AMS Accelerate IT

Contract type

Ongoing

Work mode

Remote

Experience

Senior · 5+ years

Job description

Senior Backend Engineer to own the correctness core of a private markets platform: the double-entry ledger, money-movement engine, and settlement and reconciliation workflows. The role focuses on financial correctness under concurrency, partial failure, and replay.

At a glance

Work mode: Remote

What you'll do

Design and build the double-entry ledger and money-movement engine that all transactions reconcile against
Model complex financial workflows as robust, observable state machines that run reliably over long periods
Guarantee financial correctness under concurrency: idempotent operations, transactional integrity, and reconciliation that ties out to the cent
Handle partial-failure and replay cases so no event is lost, duplicated, or applied twice
Build secure, well-versioned APIs
Design and optimize PostgreSQL schemas and data models
Debug production issues and own the reliability of mission-critical financial workflows

What we're looking for

5+ years of backend development on production systems
Demonstrated money-movement correctness experience: built a ledger, settlement system, payments core, or transaction-processing system and can talk in detail about how it was kept correct
Concurrency and idempotency depth: can explain from experience how double-processing, race conditions on balances, and replay were handled
Reconciliation experience: built or owned systems that had to tie out exactly
Strong TDD practices: writes tests first and maintains comprehensive coverage
Domain-Driven Design expertise: models complex financial domains accurately
Deep PostgreSQL knowledge: schema design, transactions, isolation levels, optimization
Strong in a modern backend stack: TypeScript/Node.js, Go and the JVM ecosystem; real depth in either and range to pick up the other
Cloud deployment experience
Startup mentality: comfortable with ambiguity, high autonomy, driving solutions without detailed specs

Nice to have

Payments, banking, brokerage, or investment-platform systems experience
Securities, custody, or portfolio/NAV domain knowledge
Event-driven architectures and message queues
Infrastructure as Code (Terraform, CloudFormation)
Understanding of KYC/AML or compliance frameworks
Accounting principles or financial modeling

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About AMS Accelerate IT

Creating the foundational backend systems that power private market access, from secure authentication and transaction processing to portfolio management and regulatory compliance.