Core Ledger Engineer: Immutable Store & Invariants

MSCI Inc; New York (NY); In loco; USD 240.000 - 360.000; Tempo pieno

Descrizione del lavoro

MSCI Inc. is seeking a seasoned engineer to design and defend the single invariant that money is neither created nor destroyed as it moves through the system.

You will shape the Ledger Core, an immutable event store that underpins all metrics and valuations across asset classes. You will own storage design, the money model with integer minor units, and the commit protocol, ensuring defensible cores over feature growth.

Competenze

• 8+ years building high-integrity storage or ledger systems in production.
• Deep fluency in a modern, type-safe systems language (Go, Rust, or similar).
• Hands-on experience with event sourcing and append-only log architectures at scale.
• Working command of MVCC, vector clocks, and consistent-cut / distributed-snapshot theory.

Mansioni

• Storage design: the append-only prefix-KV layout underneath the event log, optimized for write-once, read-many access patterns and long-horizon replay.
• The money model: integer minor units, Int128 arithmetic, and versioned units to avoid rounding / drift in the book of record.
• Conservation invariant: exact-integer check enforced at the commit point.
• Commit protocol: vector-clock based commit ordering and consistent-cut semantics across concurrent writers.
• Core boundary discipline: decide what stays inside the immutable kernel versus what is pushed out to plug-in and quant services.

Conoscenze

High-integrity storage

Ledger systems

Event sourcing

MVCC

Vector clocks

Distributed-snapshot theory

Strumenti

Go

Rust

Prefix-KV store

Int128 arithmetic

Descrizione del lavoro

MSCI Inc. is seeking a seasoned engineer to design and defend the single invariant that money is neither created nor destroyed as it moves through the system.

You will shape the Ledger Core, an immutable event store that underpins all metrics and valuations across asset classes. You will own storage design, the money model with integer minor units, and the commit protocol, ensuring defensible cores over feature growth.