Senior Software Engineer developing Python applications for life sciences company. Involves working with machine learning and backend algorithms in a hybrid environment.
About the role
- Principal Java Technologist providing technical leadership across teams in a large retail organization. Involves hands-on coding and architectural guidance in backend systems.
Responsibilities
- Lead deep technical discovery sessions and architecture reviews across teams and projects.
- Anticipate technical and operational challenges, proposing pragmatic, scalable solutions.
- Act as a trusted technical advisor to engineering, product, and senior stakeholders.
- Influence product and business decisions through a strong understanding of trade-offs, risk, and value.
- Write and review high-quality Java code (Java 17+) using frameworks such as **Spring Boot or Micronaut**.
- Design and build resilient backend services supporting **high-volume, secure retail and payment transactions**.
- Develop and oversee integrations with **acquiring banks, PSPs, payment gateways, and fraud platforms**.
- Step in where needed to unblock complex technical challenges or critical deliveries.
- Champion **event-driven architectures** using Kafka and enterprise integration patterns.
- Drive consistent, scalable microservices design across multiple teams.
- Balance long-term architectural direction with short-term delivery needs.
- Design, build, and support **cloud-native platforms** (Azure preferred) using **Kubernetes and Terraform**.
- Set standards for CI/CD using **GitHub Actions**, ensuring reliable and repeatable releases.
- Own and promote observability, monitoring, and alerting using tools such as **OpenTelemetry and Dynatrace**.
- Advocate for operational excellence, resilience, and production readiness.
- Champion secure-by-design principles and best practices across all services.
- Ensure systems align with **PCI DSS, PSD2, and SCA** requirements.
- Embed data protection and security considerations into architecture and delivery from day one.
- Mentor engineers across all levels, from junior to senior and lead.
- Raise the bar for code quality, testing, and engineering practices.
- Help define and promote standards for code review, testing strategies, delivery, and on-call/operational support.
- Foster a culture of learning, collaboration, and continuous improvement.
- Continuously improve platform reliability, performance, scalability, and cost efficiency.
- Stay ahead of technology trends and identify opportunities to innovate within the retail and payments space.
- Challenge existing approaches constructively and drive positive change.
Requirements
- Proven experience as a **Principal Java Engineer / Technologist** in large-scale, backend-heavy environments.
- Experience working across **multiple teams**, providing leadership beyond a single product or squad.
- Strong Java expertise (Java 17+) with **Spring Boot or Micronaut**.
- Solid experience with **Kafka, event-driven architectures, microservices, and enterprise integration patterns**.
- Strong understanding of **retail and payment systems**, including PSP integrations, fraud, tokenisation, and settlement flows.
- Cloud experience (Azure preferred), including Kubernetes, Terraform, and CI/CD pipelines.
- Working knowledge of **PCI DSS, PSD2, and SCA**.
- Excellent communication skills, with the ability to explain complex concepts to technical and non-technical audiences.
- Experience working in **Agile/Scrum environments** with a strong DevOps and test-driven mindset.
- **Retail experience is mandatory**, ideally in high-volume or customer-facing platforms.
Benefits
- Competitive salary including self-proposed salary increases
- Flexible working arrangements
- 25 days holiday plus bank holidays. After 2 years you are entitled to 1 additional day/ year up to 30 days
- Annual profit distribution
- Enhanced Maternity, Paternity, Shared Parental and Adoption leave and pay
- Enhanced pension scheme (up to 8% matched)
- Growth opportunities, including access to Udemy
- Private Medical Healthcare with Aviva
- A dynamic, innovative, and supportive work environment, where your ideas and contributions are valued
- Opportunities for professional development and career advancement within a global company
- Annual company team-building trip, Anniversary and Christmas party
- The chance to work on cutting-edge projects that are transforming the fintech industry
- Electric Vehicle leasing scheme
- Retail Discounts
- At our offices we have a wide range of snacks and drinks to keep you fed and healthy
- Conference Budget
- Cycle to Work scheme
Job title
Job type
Experience level
Salary
Not specified
Degree requirement
No Education Requirement
Tech skills
Location requirements
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