Integration Architect

Avance Consulting; Greater London; On-site; GBP 110,000 - 150,000; Full time

Job summary

Avance Consulting seeks an hands-on Integration Architect to drive architecture across Real-Time Ledger, Payments, and FX systems in a large banking platform. The role demands leadership, deep integration expertise, and a cloud-native mindset, with a focus on event-driven design using NATS or Kafka/Pulsar.

You will mentor multi-team groups, govern API patterns, and promote AI-assisted development to boost efficiency across initiatives.

Qualifications

• 15+ years of experience in technology.
• 5+ years of experience in Integration Architecture.
• Proven experience delivering large-scale financial/fintech systems.
• Strong hands-on technical capability with stakeholder management.

Responsibilities

• Define and own the target-state integration architecture aligned with enterprise standards.
• Lead end-to-end integration delivery across multiple systems and teams.
• Design event-driven, API-first, cloud-native solutions using NATS, REST, and asynchronous messaging.
• Create architecture artefacts, including blueprints, APIs, and ADRs.
• Act as the integration authority across platforms and stakeholders.
• Mentor teams on integration patterns, API governance, and best practices.
• Drive the use of AI tools to improve development efficiency.

Skills

Communication

Leadership

Stakeholder management

Mentor teams

Tools

NATS

Kafka/Pulsar

Java

Spring Boot

Microservices

REST

gRPC

AWS

EKS/ECS

SQS/SNS

API Gateway

Terraform

React/TypeScript

Real-Time Ledger

Job description

Hands-on Integration Architect with Banking Domain Experience, Event-Driven Architecture, and hands-on experience with either Kafka or NATS.

Drive the use of AI tools to improve development efficiency.

Hands-on Integration Architect for Project Compass, driving integration across Real-Time Ledger (RTL), Payments, and FX systems within a large banking platform.

Deep integration expertise with a cloud-native mindset.

Strong communicator and technical leader.

Familiar with AI-assisted development tools.

NATS experience is required (Kafka/Pulsar accepted).

Key Responsibilities:

• Define and own the target-state integration architecture aligned with enterprise standards.
• Lead end-to-end integration delivery across multiple systems and teams.
• Design event-driven, API-first, cloud-native solutions using NATS, REST, and asynchronous messaging.
• Create architecture artefacts, including blueprints, APIs, and Architecture Decision Records (ADRs).
• Act as the integration authority across platforms and stakeholders.
• Mentor teams on integration patterns, API governance, and best practices.
• Drive the use of AI tools to improve development efficiency.

Integration:

Event-driven architecture, NATS (or Kafka/Pulsar), messaging patterns.

Java, Spring Boot, Microservices, REST/gRPC.

Cloud:

AWS (EKS/ECS, SQS/SNS, API Gateway, Terraform).

Frontend:

React/TypeScript (working knowledge).

Domain Expertise

Experience in any of the following areas:

• Payments: SWIFT, ISO 20022, settlement
• Client Onboarding: KYC, account setup

Experience Required:

• 15+ years of experience in technology, with 5+ years of experience in Integration Architecture.
• Proven experience delivering large-scale financial/fintech systems.
• Strong hands-on technical capability combined with excellent stakeholder management skills.
• Experience leading multi-team integration initiatives.