Rust Software Engineer Lead, Distributed Ledger
FIS Management Services LLC · New York, United States ·
- Seniority
- Lead
- Employment
- Contract
- Category
- Software engineering
- Salary
- USD 133,980 – 227,770 / year
FIS Management Services LLC · New York, United States ·
FIS · New York, United States
Fidelity National Information Services · US NY NYC OVA FLR62
Fidelity National Information Services · US FL JAX 347
Fidelity National Information Services · US IL CHI 222 STE 1700
Lead Rust engineer on FIS's Keystone team, building the LYRIQ platform: a permissioned, BFT-replicated distributed ledger for bank-grade tokenized deposits and digital settlement. Day to day spans consensus and ledger core (RocksDB), cryptography and key custody (Ed25519, KMS/HSM, TEEs), a programmable transfer-rules language, gRPC APIs/SDKs, and observability.
Keystone is building bank-grade network infrastructure for regulated digital value movement. The product runs on the LYRIQ platform, which provides the ledger, integration, control, and operating services needed to support tokenized deposits, digital liquidity, and related bank-led payment and settlement use cases.
The Keystone engineering team builds the ledger and network services behind regulated digital money and bank-led settlement flows. The core platform is a permissioned, BFT-replicated distributed ledger written primarily in Rust, with a signed append-only transaction log, hierarchical account trees, programmable transfer and access rules, and hardware-backed key custody.
Core ledger Rust, Pala-family BFT consensus, RocksDB, Merkle-committed state
Cryptography and custody Ed25519, AWS KMS, on-premise HSMs, Intel SGX (Fortanix), AWS Nitro Enclaves
Services and APIs tonic gRPC, Protocol Buffers, axum, actix-web, REST gateways
Data and indexing ClickHouse, Postgres with sqlx, Kafka, ZeroMQ
Platform Docker, Kubernetes, Helm, AWS, GitHub Actions
Testing proptest, deterministic simulation, fault injection, fuzzing, formal model checking
Clients Rust, TypeScript
Small, senior teams own services end-to-end, from design through production operation. Code is carefully reviewed, formatted with cargo fmt through a pre-commit hook, and gated by CI that includes consensus simulation, contract tests, and nightly full-suite integration runs. We value signed commits, clean history, operational evidence, and documentation that outlives the person who wrote it.
Location preference is the New York City area, with flexibility for remote candidates who can reliably work Eastern Time hours and travel to New York as needed for customer sessions, planning, and key team meetings. Compensation details to be finalized with recruiting. We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. FIS is committed to providing its employees with an exciting career opportunity and competitive compensation. The pay range for this full‑time position is 133,980.00 - 227,770.00 USD Annual and reflects the minimum and maximum target for new hire salaries for this position based on the posted role, level, and location. Within the range, actual individual starting pay is determined by additional factors, including job‑related skills, experience, and relevant education or training. Any changes in work location will also impact actual individual starting pay. Please consult with your recruiter about the specific salary range for your preferred location during the hiring process.
FIS is committed to providing its employees with an exciting career opportunity and competitive compensation. The pay range for this full-time position is $133,980.00 - $227,770.00 and reflects the minimum and maximum target for new hire salaries for this position based on the posted role, level, and location. Within the range, actual individual starting pay is determined by additional factors, including job‑related skills, experience, and relevant education or training. Any changes in work location will also impact actual individual starting pay. Please consult with your recruiter about the specific salary range for your preferred location during the hiring process.
FIS is committed to protecting the privacy and security of all personal information that we process in order to provide services to our clients. For specific information on how FIS protects personal information online, please see the Online Privacy Notice.
FIS is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, marital status, genetic information, national origin, disability, veteran status, and other protected characteristics. The EEO is the Law poster is available here supplement document available here For positions located in the US, the following conditions apply. If you are made a conditional offer of employment, you will be required to undergo a drug test.
In developing this job description care was taken to include all competencies needed to successfully perform in this position. However, for Americans with Disabilities Act (ADA) purposes, the essential functions of the job may or may not have been described for purposes of ADA reasonable accommodation. All reasonable accommodation requests will be reviewed and evaluated on a case‑by‑case basis.
Recruitment at FIS works primarily on a direct sourcing model; a relatively small portion of our hiring is through recruitment agencies. FIS does not accept resumes from recruitment agencies which are not on the preferred supplier list and is not responsible for any related fees for resumes submitted to job postings, our employees, or any other part of our company.
Fidelity National Information Services · US WI MKE 4900