Java Technical Lead

JR United Kingdom; City Of London; On-site; GBP 80,000 - 120,000; Full time

Job summary

A leading global software engineering provider seeks a Java Technical Lead in London. The role involves overseeing backend engineering efforts, with a focus on developing scalable systems and leading teams. Candidates should possess extensive experience in Java and microservices within the banking or financial services domain.

Qualifications

• 10+ years of professional experience in backend development, with 3+ years in leadership.
• Strong expertise in Java, Spring Boot, and microservices.
• Hands-on experience with API Gateway and IDAM platforms.

Responsibilities

• Design and develop scalable backend systems using Java and Spring Boot.
• Lead development of RESTful APIs and ensure performance for mobile platforms.
• Collaborate with teams on security best practices and CI/CD integration.

Skills

Java

Spring Boot

Microservices Architecture

Solution Design

SQL

RDBMS

Education

Bachelor’s or Master’s degree in computer science, Engineering, or related field

Tools

API Gateway Technologies

CI/CD Tools

NoSQL Databases

Cloud Platforms

Container Orchestration

Job description

Social network you want to login/join with:

Java Technical Lead, london (city of london)

col-narrow-left

Client:

Ascendion

Location:

london (city of london), United Kingdom

Job Category:

Other

-

EU work permit required:

Yes

col-narrow-right

Job Views:

2

Posted:

28.06.2025

Expiry Date:

12.08.2025

col-wide

Job Description:

About the Role:

We are seeking an experienced and visionary Technical Lead with deep expertise in Java Spring Boot, microservices architecture, and solution design to lead the backend engineering efforts of our enterprise platforms. This role requires strong architectural acumen, hands-on coding capability, and a leadership mindset to guide teams across the full software development lifecycle.

Exposure to mobile application ecosystems, collaboration across cross-functional teams, and experience in the banking or financial services domain will be strong assets. You’ll work closely with engineering managers, architects, mobile teams, and product stakeholders to deliver scalable, secure, and maintainable solutions. ________________________________________

Key Responsibilities:

• Design and develop scalable, secure, and high-performance backend systems using Java, Spring Boot, and modern architectural practices.

• Lead development of RESTful APIs and microservices along with mobile platforms, ensuring consistency and alignment with business and UX goals.

• Drive integration with API Gateway technologies (e.g., Kong, Apigee, AWS API Gateway) to enforce access control, rate limiting, and API lifecycle management.

• Implement robust authentication and authorization workflows using IDAM platforms such as Ping Identity, Okta, or Auth0, with support for OAuth2, OIDC, and JWT.

• Collaborate with mobile app teams to ensure backend services are optimized for mobile-specific use cases such as performance, caching, and offline access.

• Own end-to-end technical delivery, including code quality, performance optimization, security best practices, and CI/CD integration.

• Perform code and design reviews, define technical standards, and mentor developers across the team.

• Troubleshoot and resolve complex system issues in development and production environments.

• Contribute to solutioning, estimations, and project planning in agile delivery models.

________________________________________

Required Qualifications:

• Bachelor’s or Master’s degree in computer science, Engineering, or related field.

• 10+ years of professional experience in backend development, with at least 3+ years in technical leadership or solution design roles.

• Strong expertise in Java, Spring Boot, and the Spring ecosystem (Spring MVC, Data, Security).

• Proven experience architecting and deploying microservices-based systems in complex enterprise environments.

• Hands-on experience with API Gateways (Kong, Apigee, or AWS API Gateway) and secure API development.

• Working knowledge of IDAM platforms like Ping Identity, Auth0, or Okta.

• Work closely with mobile app teams to ensure backend services are optimized for mobile/web delivery.

• Experience working in banking or financial services domain, with understanding of regulatory and security considerations.

• Proficiency in SQL and RDBMS (PostgreSQL, MySQL, Oracle), and familiarity with CI/CD and DevOps tooling (GitHub Actions, Jenkins, GitLab CI).

• Excellent communication, collaboration, and technical documentation skills.

________________________________________

Preferred Qualifications:

• Exposure to mobile application development lifecycle, backend-for-frontend (BFF) patterns, and mobile performance optimization.

• Experience with NoSQL databases (e.g., MongoDB, Cassandra).

• Familiarity with cloud platforms (AWS, GCP, Azure) and container orchestration (Kubernetes).

• Knowledge of event-driven or reactive architectures, messaging systems (Kafka, RabbitMQ), or domain-driven design (DDD).

• Agile development experience using tools like Jira, Confluence, and participation in SAFe or Scrum environments.

• Contributions to architecture governance, tech evaluations, or engineering playbooks.

About us

Ascendion is a Global, leading provider of AI-first software engineering services, delivering transformative solutions across North America, APAC, and Europe. We are headquartered in New Jersey.

We combine technology and talent to deliver tech debt relief, improve engineering productivity solutions, and accelerate time to value, driving our clients’ digital journeys with efficiency and velocity. Guided by our “Engineering to the power of AI” [EngineeringAI] methodology, we integrate AI into software engineering, enterprise operations, and talent orchestration, to address critical challenges of trust, speed, and capital.