Senior / Principal Java / Kotlin Developer

Grid Dynamics; Greater London; On-site; GBP 90,000 - 140,000; Full time

Benefits offered by this job

Medical insurance

Flexible schedule

Corporate events

Professional development

Job summary

Grid Dynamics is partnering with a Tier 1 investment bank to deliver a next-generation FX risk platform. This role focuses on building FX Options end-of-day Official Valuation capabilities, developing Java/Kotlin stream-processing pipelines on Apache Flink, and collaborating with trading desks across time zones.

You will own the full delivery cycle from requirements to release, work embedded with the bank's engineers, and contribute to decommissioning legacy applications.

Qualifications

• Strong Kotlin and core Java skills with production data-processing experience.
• Solid understanding of Flink or similar stream-processing frameworks.
• Rigour around data correctness, testing, reconciliation and late/missing data handling.

Responsibilities

• Build FX Options end-of-day valuation capabilities on the new platform.
• Develop Java/Kotlin stream-processing pipelines on Apache Flink.
• Collaborate with trading desks and partner systems to gather requirements and drive delivery.
• Own changes through design, review, development, testing and release.

Skills

Java

Kotlin

Apache Flink

Stream-processing

Data correctness

Education

Bachelor's degree in Computer Science

Tools

Java Platform

Git

Linux

Job description

JUXT is partnering with a Tier 1 investment bank on a strategic initiative to build its next-generation FX Risk Platform: consolidating risk management capabilities into a modern, scalable architecture and decommissioning multiple legacy risk applications. This role builds the platform's FX Options end-of-day Official Valuation capabilities, supporting the bank's Asia FX trading desk. The platform is built in Java and Kotlin on Apache Flink, and the work runs the full delivery cycle from requirements through design, development, testing and release, embedded with the bank's engineers who own the EOD module.
Client description
Our client is a Tier 1 global investment bank with a major markets and trading technology presence. Engagements span business-critical trading, risk and data platforms, built and run to a high engineering standard within a demanding regulated environment.

Responsibilities

Building FX Options end-of-day Official Valuation capabilities on the new platform; developing Java/Kotlin stream-processing pipelines on Apache Flink where correctness matters above all; engaging directly with trading desks and partner systems to gather and refine requirements; owning changes through the full cycle of design, review, development, testing and release; supporting the decommissioning of the legacy applications the new capabilities replace.

Requirements

Essential: strong Kotlin and core Java, with experience building and operating production data-processing systems; good understanding of Apache Flink, or deep experience with comparable stream-processing frameworks and a clear appetite to go deep on Flink; rigour around correctness such as testing, reconciliation, and careful handling of late, missing or corrected data; clear communication with trading desks, partner systems and the module's owners. Highly valued: FX or derivatives domain knowledge, especially options, valuations and end-of-day processes; experience supporting trading desks across time zones; experience in banking or other large regulated enterprises.

We offer

• Opportunity to work on bleeding-edge projects
• Work with a highly motivated and dedicated team
• Competitive salary
• Flexible schedule
• Benefits package - medical insurance, sports
• Corporate social events
• Professional development opportunities
• Well-equipped office

About Us

Grid Dynamics (NASDAQ: GDYN) is a leading provider of technology consulting, platform and product engineering, AI, and advanced analytics services. Fusing technical vision with business acumen, we solve the most pressing technical challenges and enable positive business outcomes for enterprise companies undergoing business transformation. A key differentiator for Grid Dynamics is our 8 years of experience and leadership in enterprise AI, supported by profound expertise and ongoing investment in data, analytics, cloud & DevOps, application modernization and customer experience. Founded in 2006, Grid Dynamics is headquartered in Silicon Valley with offices across the Americas, Europe, and India.