** Contract Opportunity Available - No Visa Sponsorship options for this role . Hybrid Work 2-3 days work from  client office in Downtown Toronto OR Mississauga**

KDB+ / Apache Flink Developer

Our client is seeking a hands-on developer with experience in KDB+/q and Apache Flink to support real-time and historical data processing needs within its Markets Technology group. This role focuses on building high-performance analytics platforms to support trading, surveillance, market data, and regulatory reporting, using in-house and open-source Flink deployments (not Confluent).

Key Responsibilities

• Design, implement, and maintain streaming data pipelines using Apache Flink (open-source, non-Confluent) to process high-volume trade and market data.
• Develop and optimize KDB+/q applications for storing and analysing tick data, order books, and market microstructure analytics.
• Collaborate with traders, quants, and risk teams to deliver solutions for real-time decision support and post-trade analysis.
• Integrate Flink-based services with Kafka, internal APIs, and downstream data consumers.
• Support internal infrastructure teams on deployment, monitoring, and tuning of Apache Flink clusters.

Required Qualifications & Experience

• 4+ years of experience in KDB+/q development for real-time and historical analytics platforms.
• 2+ years of experience in Apache Flink (open-source, self-managed or Citi-hosted environments).
• Strong understanding of event time processing, stateful stream processing, and checkpointing in Flink.
• Experience with Kafka for stream ingestion and distribution.
• Familiarity with low-latency system design, performance tuning, and distributed computing.
• Strong communication skills and ability to work with global teams across Markets and Risk.
• Solid understanding of Agile methodologies and CI/CD processes.
• Strong problem-solving skills with the ability to prioritize multiple tasks, set goals, and meet deadlines.
• Excellent communication skills, capable of articulating complex technical concepts in a multicultural team environment.
• Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent experience).
• Prior experience in Equities, FX, or Fixed Income trading technology.
• Exposure to on-prem or cloud-based deployments of Apache Flink (non-Confluent).
• Familiarity with CI/CD tools and infrastructure-as-code frameworks (e.g., Ansible, Terraform).