kotlin developer for trading platforms

Grid Dynamics; Greater London; On-site; GBP 110,000 - 190,000; Full time

Benefits offered by this job

Medical insurance

Sports membership

Corporate events

Professional development

Well-equipped office

Job summary

Grid Dynamics ищет опытного инженера Java/Kotlin для разработки и модернизации крупных торговых систем на JVM в банковской среде. Роль предполагает работу с архитектурами на основе событий, тесное взаимодействие с бизнес-стейкхолдерами и ответственность за качество кода.

Кандидат должен обладать опытом в торговле/пост-трейде, знанием CI/CD и готовностью работать в условиях сложных производственных сред. Предлагается гибкий график и активное профессиональное развитие.

Qualifications

• Expert-level Java expertise with production Kotlin experience for multithreaded, high-performance enterprise systems.
• Practical experience designing message-passing and event-sourcing architectures, including failure handling and replay semantics.
• TDD as core engineering practice with end-to-end quality ownership.
• Proven hands-on experience in trading or post-trade environments (trade lifecycle, cashflow, settlement).

Responsibilities

• Re-engineer trading and post-trade systems into event-driven, cloud-native services on the JVM using Java and Kotlin.
• Modernize legacy components while keeping a live, high-stakes platform stable.
• Build data and market-expansion platforms, including cross-margining and credit financing plumbing.
• Design event-driven systems for failure handling and data integrity under market pressure.
• Deliver iteratively with trunk-based development, CI/CD, and zero-downtime releases.
• Engage with stakeholders and upstream/downstream teams to build domain knowledge.

Skills

Java

Kotlin

Event-sourcing

TDD

CI/CD

Technical communication

Multithreading

Trunk-based development

Zero-downtime releases

Tools

Kafka

MongoDB

Kubernetes/OpenShift

OpenTelemetry

ELK

Grafana

SQL Server (T-SQL)

Job description

Описание:

Grid Dynamics provides technology consulting, platform and product engineering, AI, and advanced analytics services. It helps enterprise companies undergoing business transformation address technical challenges and achieve positive business outcomes.

Задачи:

• Re-engineer core trading and post-trade systems into event-driven, cloud-native services on the JVM using Java and Kotlin;
• Modernize legacy components while maintaining the stability of a live, financially significant platform;
• Build new data and market-expansion platforms, alongside plumbing for cross-margining and credit financing;
• Design event-driven systems for failure handling, ordering guarantees, replay semantics, and data integrity under market pressure;
• Practice TDD and shift-left testing, use local containerized dependencies, and own quality end-to-end;
• Deliver iteratively using trunk-based development, CI/CD, and frequent zero-downtime production releases;
• Engage directly with business stakeholders and upstream and downstream teams to build domain knowledge without relying on Business Analysts;
• Use AI-assisted and agentic development tools to accelerate legacy code analysis, test generation, prototyping, and refactoring.

Требования:

• Expert-level Java expertise and production Kotlin experience, or a clear appetite to adopt Kotlin, for multithreaded, high-performance enterprise systems;
• Practical experience designing message-passing and event-sourcing architectures, including failure handling, ordering guarantees, and replay semantics;
• TDD as a core engineering practice, with the ability to design for testability and demonstrate end-to-end quality ownership;
• Proven hands-on experience in trading or post-trade environments, including trade lifecycle, booking, position management, cashflow calculation, settlement, wires, client reporting, and accounting principles;
• A proven track record with short feedback loops, trunk-based development, CI/CD, and regular zero-downtime production releases;
• Ability to analyze, refactor, and modernize large-scale legacy systems while maintaining operational stability;
• Strong technical communication skills, ability to contribute to design discussions and constructively challenge technical decisions, and ability to work with minimal supervision in complex production environments;
• Nice to have: Deep understanding of Prime Brokerage, Synthetic (Swaps), or Cash Equity operational flows;
• familiarity with corporate actions, regulatory reporting obligations (e.g., 871(m), EMIR, MiFID), and integrating with risk/valuation systems in an equities context;
• strong SQL Server depth (T-SQL, schema design, performance tuning) in high-transaction environments;
• experience with Kafka and MongoDB at scale;
• experience deploying on Kubernetes/OpenShift with observability using OpenTelemetry, ELK, and Grafana;
• hands-on experience with agentic coding workflows for legacy code analysis, automated test generation, and refactoring.

Условия:

• Competitive salary;
• Flexible schedule;
• Benefits package includes medical insurance and sports;
• Corporate social events;
• Professional development opportunities;
• Well-equipped office.