# Senior hands-on architect for Capital Markets Shared Technology

**Company**: London Stock Exchange Group (LSEG)
**Location**: Bucharest
**Experience**: senior
**Job type**: full-time
**Category**: Engineering
**Industry**: Finance

**Apply**: https://lseg.wd3.myworkdayjobs.com/en-US/Careers/job/Bucharest-Romania/Technical-Architect--AI-SDLC-_R0118189-1?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_2d85963f-095

## Description

We are seeking a Senior hands-on architect for Capital Markets Shared Technology, combining Java architecture, AI-enabled engineering, and technical leadership to drive better systems and faster delivery.

The AI-focused Technical Architect is a senior engineering leader responsible for designing modern, modular, AI-optimised software systems and guiding engineering teams across the full solution lifecycle.

**Key Responsibilities**

- Design modern, modular, AI-optimised software systems

- Guide engineering teams across the full solution lifecycle

- Drive decisions around system decomposition, modularity, interoperability, and domain boundaries

- Introduce patterns such as Spring Modulith, jMolecule DDD abstractions, event architecture, and AI-assisted SDLC workflows

- Ensure project structures, documentation, automation, and governance frameworks are optimised for modern LLM-driven development teams

**Key Behaviours**

- Build a strong understanding of Capital Markets business processes and use that context to shape architecture decisions

- Mentor and upskill engineers, making complex topics clear and practical for junior developers

- Operate with high autonomy and entrepreneurial drive, spotting opportunities and leading improvement initiatives

- Champion adoption of modern technologies, engineering standards, and AI-enabled practices across the broader Capital Markets group

- Challenge the status quo constructively, balancing innovation with security, resilience, auditability, and risk control

**Technical Knowledge**

### Spring Ecosystem

- Expert Java and Spring Boot skills, with strong experience building modular, testable enterprise services

- Apply Spring Modulith, jMolecule, and ArchUnit to enforce clear domain boundaries and architectural rules

- Promote clean code, automation, and strong SDLC discipline across development, testing, and delivery

### CS & System Design

- Strong fundamentals in APIs, distributed systems, modular architecture, data design, scalability, resilience, and observability

- Model domains with DDD, events, and asynchronous patterns; assess CQRS or event sourcing where they add value

- Design cloud-native systems and data platforms using technologies such as Postgres, MongoDB, Elasticsearch, and AWS-led cloud services

### Databases

- Deep expertise across major relational database engines and managed RDS platforms, including PostgreSQL and cloud-native variants

- Strong understanding of storage systems and fit-for-purpose data platforms, including transactional stores, document databases, search engines, vector stores, object storage, and event or streaming data layers

- Expert in schema design, query tuning, indexing, partitioning, replication, high availability, disaster recovery, data residency, transaction consistency, and backup and restore for business-critical systems

### Prompt Engineering and Practices

- Use spec-driven development to turn requirements into effective prompts, code, tests, and documentation

- Structure repositories, modules, and design artefacts so they are readable and usable by LLM-based tools

- Define practical prompting, review, and governance patterns that improve output quality and traceability

### Agentic Development

- Apply AI agents to code generation, refactoring, dependency mapping, documentation, and design review

- Required hands-on experience with vector databases and RAG patterns, including embeddings, chunking, indexing, retrieval, and grounding AI outputs in trusted enterprise data

- Integrate MCP-compatible tooling into engineering workflows and CI/CD pipelines

- Design deterministic, well-scoped, side-effect-safe services and tools that can be safely orchestrated by agents

**Benefits**

- 25 days' holiday per year

- 1 additional day off for your Birthday

- Annual wellness allowance

- Share Purchase Plan

- Medical Health Insurance

- Medical Subscription (preventive medical services)

- Dental Coverage

- Life insurance

- Pillar 3 Private Pension

- Meal Vouchers

- Flexible Benefits

- Bookster

- Volunteering Events

## Skills

### Required
- Java
- Spring Boot
- Spring Modulith
- jMolecule
- ArchUnit
- PostgreSQL
- MongoDB
- Elasticsearch
- AWS
- AI-assisted SDLC workflows
- LLM-driven development
- DDD
- CQRS
- event sourcing
- cloud-native systems
- data platforms
- vector databases
- RAG patterns

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Source: [Apply at lseg.wd3.myworkdayjobs.com](https://lseg.wd3.myworkdayjobs.com/en-US/Careers/job/Bucharest-Romania/Technical-Architect--AI-SDLC-_R0118189-1?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)