Software Engineering · Consulting

Shajid (Saj) Issa

Enterprise Java & Spring Specialist · Solution Architect · Technical Lead.
I design and deliver secure, high-availability systems and integrations for commercial and healthcare organisations.

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Shajid Issa
Based in UK
Available for consulting

About

I deliver enterprise-grade software and integration solutions with a strong commercial background, spanning e-commerce, research, and healthcare. My work includes leading Java/Spring services for UK Biobank (access management for 500k+ participants), architecting large-scale e-commerce platforms at RS Components, and delivering secure NHS integrations and automated data pipelines adopted by multiple trusts.

  • Integrations: HL7, FHIR, NHS Spine, Nervecentre; REST/SOAP service meshes and event-driven flows (Kafka).
  • Platforms: Developer platforms and CI/CD for teams; reproducible environments with IaC (CloudFormation/SAM/Terraform).
  • Runtime & Security: Java 17+, Spring Boot, OAuth2/OpenID Connect, auditing, secrets management, zero-downtime releases.
  • Cloud & Data: AWS (EC2/ECS/Fargate/S3/CloudFront), GitHub Actions CI/CD; PostgreSQL, Redis, S3 data lakes, scheduled ETL/PLCM exports.
  • Commercial track record: RS Components (e-commerce), University of Oxford (clinical trials), UHL (genomics & PLCM), UK Biobank (research).
Experience
20+ yrs
Domains
Health & Research
Recent
NHS - HL7 integrations University of Leicester - BRISSkit Genomics England - 100k Genomes IBM partnership work

Skills

Core technical expertise

Languages
  • Java (8–17), Scala, C/C++, Node.js (JavaScript)
  • SQL (PostgreSQL, MySQL, SQL Server), PL/pgSQL
  • Bash, Python (scripting), Groovy
Frameworks
  • Spring Boot, Spring Security, JPA/Hibernate
  • JSP/Servlets, Tomcat, JAX-RS (REST), SOAP
  • React/Angular (exposure), Bootstrap
Cloud & DevOps
  • AWS: EC2, ECS/Fargate, S3, CloudFront, IAM
  • CI/CD: GitHub Actions, Jenkins
  • IaC: CloudFormation, SAM, Terraform
  • Containers: Docker, Kubernetes
Data & Messaging
  • Kafka, Redis, RabbitMQ (exposure)
  • PostgreSQL, MySQL, MongoDB
  • ETL pipelines, PLCM exports, S3 data lakes
Interoperability
  • HL7 v2, FHIR, NHS Spine
  • Nervecentre, PMI/EMPI integrations
  • Identity/OIDC, SSO, RBAC/ABAC
Testing & Quality
  • JUnit, Mockito, Testcontainers
  • Selenium, SonarQube
  • Logging/Tracing, Observability
Tooling
  • Git, Maven, Gradle, IntelliJ IDEA
  • Linux/Ubuntu, Nginx, Tomcat
  • GitLab, Nexus/Artifactory
Leadership
  • Team leadership & mentoring
  • Stakeholder management
  • Agile delivery & roadmapping

Projects

Selected case studies

UK Biobank

Lead Java Developer delivering secure Access Management Service for genome platform with 500k+ participants.

NHS Integrations

Automated PLCM pipelines and HL7/FHIR integrations across hospital systems (Leicester, Cambridge, Nottingham).

University of Oxford

Led software development for multi-country clinical trials (Orion, EMPA), ensuring compliance and multilingual support.

Clients

I have worked with the following clients

NHS
University of Leicester
Harvard
IBM
Jisc
Leicestershire County Council

Services

Outcome-oriented development and integration

Development

Robust backends, APIs and data flows with strong security.

Integration

Event-driven and batch integrations across platforms.

Cloud & CI/CD

Automated, reproducible deployments with IaC.

Testing

Contract tests, integration tests & observability.

Discuss a project

Software

Experience of the following software

Kafka
Spring
AWS
Docker
Kubernetes
PostgreSQL
MySQL
MongoDB
Redis
Git
IntelliJ
Ubuntu

Get in touch

Open to consulting and collaborations.