Omnesys Platform Lead

Citigroup Inc.; Mumbai; On-site; INR 4,000,000 - 7,000,000; Full time

Job summary

Citigroup Inc. is seeking a Senior Infrastructure & Specialist to join the India Equities Technology team in Mumbai.

The role focuses on ensuring high availability, reliability, and performance of mission-critical HFT infrastructure and applications, with hands-on Linux/Unix, FIX protocol, and DMA/algorithmic trading support. You will bridge infrastructure operations with development and business stakeholders to maintain a seamless trading environment and engage in monitoring, change control,

Qualifications

• Experience: Minimum of 7+ years in production support, application support, or infrastructure operations within Capital Markets / Investment Banking.
• Education: Bachelor’s degree in Engineering (E&TC, CS) or related technical field.

Responsibilities

• Infrastructure & Environment Management: Maintain multi-tier UAT and Production environments; manage Batch Scheduling with Autosys; perform SOD/EOD on Linux systems; support data warehousing with SQL databases.
• Application & Connectivity Support: Lead FIX connectivity platform enhancements; provide L1/L2 trading desk support; coordinate exchange connectivity tasks; liaise with vendors and internal teams.
• Monitoring, Incident & Change Management: Proactive monitoring with ITRS Geneos; manage incidents from detection to resolution; use ServiceNow and Jira for ticketing; deploy production changes during non-market hours; regulatory reporting to SEBI and clients.

Skills

Linux/Unix

Unix Shell Scripting

FIX Protocols

Trading desks support

High-frequency trading concepts

Stakeholder management

Problem solving under pressure

Education

Bachelor's degree in Engineering (E&TC, CS)

Tools

Autosys

ITRS Geneos

ServiceNow

Jira

Omnesys

Traderpath

Gatelab HFT

Bloomberg

Postgres

Oracle

SQL Server

Job description

Position Overview

We are seeking a highly skilled and experiencedSenior Infrastructure & Specialist to join our India Equities Technology team. In this role, you will be responsible for ensuring the high availability, reliability, and performance of our mission-critical, high-frequency trading (HFT) infrastructure and applications.

The ideal candidate will possess a strong background in capital markets, hands‑on expertise in Linux/Unix environments, deep knowledge of the FIX protocol, and a proven track record of supporting high‑touch trading desks, Direct Market Access (DMA), and algorithmic trading platforms. You will bridge the gap between infrastructure operations, development teams, and business stakeholders to maintain a seamless trading environment.

Key Responsibilities

1. Infrastructure & Environment Management

• Environment Maintenance: Manage and maintain multi-tier UAT and Production environments, ensuring system stability, configuration consistency, and readiness for daily trading activities.
• Batch Scheduling & Automation: Design, configure, monitor, and troubleshoot batch jobs usingAutosys to automate critical operational workflows and data processing.
• System Operations: Perform daily Start of Day (SOD) and End of Day (EOD) activities on Linux systems to guarantee environment availability for live trading.
• Database Support: Query and manage relational databases (SQL, Postgres, Oracle) to fetch data, analyze table partitions, and support data warehousing requirements.

2. Application & Connectivity Support

• FIX Connectivity Management: Lead the functional enhancement, configuration, and monitoring of theFIX connectivity platform. Manage client onboarding, UAT testing, and certification of FIX algos.
• Trading Desk Support: Provide on‑floor L1/L2 production support to high‑touch trading desks for equities, futures, and options, as well as DMA and algorithmic trading desks.
• Exchange Connectivity: Coordinate and execute exchange connectivity tasks, including uploading exchange files, margin/position files, and participating in regular exchange mock trading sessions (e.g., NSE/BSE).
• Vendor & Developer Collaboration: Act as the primary technical liaison with third‑party application vendors (e.g., Omnesys, Traderpath) and internal development teams to resolve complex application bugs and deploy backend fixes.

3. Monitoring, Incident & Change Management

• Proactive Monitoring: Utilize enterprise monitoring tools such asITRS Geneos to track system health, latency, and connectivity, proactively addressing alerts before they impact the business.
• Incident Resolution: Own and manage production incidents from detection through to resolution. Perform root cause analysis (RCA) and raise/track tickets inServiceNow andJira.
• Change & Release Management: Schedule, coordinate, and deploy production changes, software packages, and drivers on servers during non‑market hours, adhering to strict change control policies.
• Regulatory Reporting: Ensure timely processing and transfer of operational and transaction files (e.g., OTR files) to regulatory bodies (e.g., SEBI) and clients.

Required Technical Skills & Qualifications

Experience & Education

• Experience: Minimum of 7+ years of experience in production support, application support, or infrastructure operations within the Capital Markets / Investment Banking domain.
• Education: Bachelor’s degree in Engineering (Electronics & Telecommunications, Computer Science, or a related technical field).

Technical Competencies

• Operating Systems: Strong administration and troubleshooting skills inLinux/Unix and Windows environments.
• Scripting: Proficiency inUnix Shell Scripting for task automation, log analysis, and data extraction.
• Protocols: Deep understanding ofFIX Protocols (session and application levels) and FIX configuration.
• Databases: Solid experience writing SQL queries and working withPostgres, Oracle, or SQL Server.
• Tools & Applications:
  • Scheduling: Autosys
  • Monitoring: ITRS Geneos
  • Ticketing/Collaboration: ServiceNow, Jira
  • Trading Applications: Experience with trading platforms (e.g., Omnesys, Traderpath, Gatelab HFT, Bloomberg) is highly desirable.

Soft Skills & Domain Knowledge

• Domain Expertise: Comprehensive understanding of capital markets, equity/derivatives trading lifecycles, and high‑frequency trading (HFT) concepts.
• Stakeholder Management: Ability to collaborate effectively with diverse stakeholders, including Institutional Sales, Execution Traders, QA, Compliance, and external vendors.
• Problem‑Solving: Exceptional analytical skills with the ability to perform under pressure during live market hours.

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Time Type:

Full time

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Most Relevant Skills

Please see the requirements listed above.

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Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

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