Java Technical Lead

Ascendion; London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Ascendion seeks a Lead Talent Acquisition in London to guide backend engineering for enterprise platforms. The role demands extensive Java Spring Boot expertise and leadership to develop scalable solutions. Ideal candidates will have significant experience in the financial services industry, engaging cross-functional teams to deliver high-performance digital solutions.

Qualifications

• 10+ years of backend development experience.
• 3+ years in technical leadership roles.
• Experience in banking or financial services.

Responsibilities

• Design and develop backend systems using Java and Spring Boot.
• Lead API and microservices development.
• Collaborate with engineering teams for technical delivery.

Skills

Java

Spring Boot

Microservices

API Development

Technical Leadership

Education

Bachelor’s or Master’s degree in Computer Science or Engineering

Tools

Kong

Apigee

AWS API Gateway

SQL

CI/CD

Job description

This range is provided by Ascendion. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

Direct message the job poster from Ascendion

Lead Talent Aquisition - Digital Engineering

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.

Seniority level

• Seniority level

  Director

Employment type

• Employment type

  Full-time

Job function

• Job function

  Consulting

• Industries

  Technology, Information and Internet

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