Full-Stack Software Engineer with OAuth
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Benefits offered by this job
Job summary
Endava is seeking a Full Stack Software Engineer to join a cross-functional team building an authentication and authorization platform for WTW. You will develop secure identity services, REST APIs and admin tooling, while improving developer experience and platform scalability.
You will work with .NET, Azure, and modern identity technologies to deliver reusable platform capabilities that enable multiple product teams across the organisation to integrate securely.
Qualifications
- 4+ years of commercial software development with C# and .NET.
- Experience designing REST APIs and scalable enterprise apps.
- Strong understanding of OAuth 2.0, OIDC and JWT.
- Experience with cloud-native apps on Azure.
Responsibilities
- Design, develop and maintain authentication and authorization services.
- Build REST APIs and Angular admin portals.
- Develop reusable SDKs and developer tooling.
- Contribute to CI/CD pipelines and Azure DevOps.
- Collaborate with Architects, QA and Platform engineers.
- Write unit and integration tests.
Skills
Tools
Job description
Technology is our how. And people are our why.
At Endava, we harness technology to drive meaningful change. By combining AI-native engineering, deep industry expertise and a people-centric mindset, we partner with leading organisations to solve complex business challenges and create digital products and platforms that make a lasting impact.
From strategy and design to engineering and operations, we help our customers accelerate innovation and transform their businesses. Join us and be part of a global team delivering work that matters.
As part of Endava's strategic partnership with WTW, who provide data-driven, insight-led solutions in the areas of people, risk and capital, we're building dedicated software engineering teams to support WTW's Insurance Consulting and Technology Division.
WTW's Insurance Consulting and Technology business is a global leader in P&C, Life and Health insurance software and advisory services, with over 1,700 colleagues across 35 markets. More than 1,000 insurers worldwide trust our combination of advisory insight and advanced software to help them navigate complexity and drive sustainable growth.
Joining Endava, you'll work exclusively with WTW to help embed AI-enabled engineering practices, modern ways of working and deep insurance technology expertise, contributing to the next generation of products and services for insurers worldwide. Working as part of a dedicated team established through a Build-Operate-Transfer (BOT) model, you'll collaborate closely with WTW while building your career as an Endava employee, supporting the long-term success of this strategic partnership.
As a Full Stack Software Engineer, you will join an experienced cross-functional engineering team responsible for designing, developing and evolving the Authentication and Authorization capability used across multiple products and engineering teams.
This is not a traditional application development role. Instead, you will help build a reusable identity platform that enables other engineering teams to adopt standardised authentication and authorisation services while improving security, developer experience and operational efficiency.
The capability provides shared identity and access management services that help applications authenticate users securely, authorise access to business resources and integrate with enterprise identity providers.
Built on Auth0, Fine-Grained Authorization (FGA) and modern Azure services, it includes reusable SDKs, reverse proxy services and developer tooling that make secure integration simpler across ICT’s technology landscape.
You will work closely with architects, product teams, platform engineers and business stakeholdershelping deliver secure, scalable and high-quality technology solutions that create value for WTW and its customers.
In this role you will:
- Help deliver secure, reusable authentication and authorization services used by multiple product teams.
- Build high-quality .NET APIs, Angular administration tools and integration services that are maintainable and easy to operate.
- Improve the reliability, scalability and security of shared identity services through well-tested engineering changes.
- Support platform adoption by improving SDKs, documentation, developer tooling and integration patterns.
- Contribute to automation, CI/CD and cloud platform improvements that make delivery faster and more predictable.
- Collaborate with architects, product owners, QA, DevOps and consuming product teams to solve identity and access management challenges.
- Actively learn, share knowledge and contribute to a positive engineering culture within the Quartz team.
- Design, develop and maintain authentication and authorization services using modern .NET technologies.
- Develop reusable platform services supporting secure authentication and authorization across multiple business applications.
- Build scalable REST APIs and integration services used throughout the organisation.
- Develop and maintain Angular-based administration portals supporting user, group and permission management.
- Contribute to the evolution of Fine-Grained Authorization (FGA) capabilities and centralized access management services.
- Develop reusable SDKs, libraries and APIs that simplify integration with the enterprise identity platform.
- Build developer tooling that improves onboarding and adoption of shared authentication services.
- Improve developer experience by simplifying authentication, authorization and platform integration.
- Produce and maintain technical documentation supporting engineering teams consuming the platform.
- Develop cloud-native services running on Microsoft Azure.
- Build and maintain reverse proxy capabilities using Azure API Management.
- Support Infrastructure as Code implementation using OpenTofu/Terraform.
- Contribute to CI/CD pipelines and deployment automation using Azure DevOps.
- Support continuous improvements in platform scalability, security and operational resilience.
- Write unit, integration and automated tests ensuring platform quality and reliability.
- Participate in peer reviews, architecture discussions and technical design sessions.
- Promote engineering best practices including Clean Code, automated testing and secure software development.
- Collaborate with Product Owners, Architects, QA Engineers and Platform Engineers to deliver high-quality platform capabilities.
- Participate in third-line production support and on-call rotation.
- Investigate production issues and contribute to platform reliability improvements.
- Work closely with multiple product teams integrating with the platform.
- Share knowledge and contribute to establishing long-term Endava ownership of the Authentication & Authorization capability.
- 4+ years of commercial software development experience using C# and modern .NET.
- Strong experience designing and developing REST APIs.
- Experience building scalable enterprise applications or shared platform services.
- Strong knowledge of object-oriented programming and modern software design principles.
- Strong understanding of OAuth 2.0, OpenID Connect (OIDC) and JWT.
- Good understanding of modern authentication and authorization concepts.
- Experience integrating applications with enterprise identity providers.
- Understanding of secure API design and identity-based access control.
- Experience developing cloud-native applications on Microsoft Azure.
- Experience with Azure DevOps, Git and CI/CD pipelines.
- Understanding of Infrastructure as Code principles, with the ability and willingness to work with tools such as OpenTofu or Terraform.
- Understanding of Azure API Management or similar API Gateway technologies.
- Experience building administrative or developer-facing web applications.
- Experience writing automated tests (unit, integration and API testing).
- Experience working in Agile Scrum teams.
- Strong communication and collaboration skills.
- Ability to work effectively across multiple product teams.
- Auth0
- Fine-Grained Authorization (FGA)
- SCIM integrations
- Identity Federation
- Playwright
- Invicti
- Experience working with enterprise shared services
For this position, the gross basesalarystarts fromPLN 15 267 PLN Gross per month(full-time employment contract), determined using objective and gender-neutral criteriaincluding skillset, experience and role responsibilities.
Ourbenefits offering typicallyinclude private medicalinsurance, dental plan, and glasses reimbursement. The figure represents theinitial remuneration we expecttooffer for this role and does not limit the righttoequalpayfor women and men performing the same work or work of equal value. All remuneration andbenefits decisions are based on non-discriminatory, gender-neutral criteria, andinaccordance with the Polish Labour Code amendments implementing Directive onpaytransparency, we do not request or consider candidates’ current or past remuneration during the recruitment process.”
At Endava, we’re committed to creating an open, inclusive, and respectful environment where everyone feels safe, valued, and empowered to be their best. We welcome applications from people of all backgrounds, experiences, and perspectives—because we know that inclusive teams help us deliver smarter, more innovative solutions for our customers. Hiring decisions are based on merit, skills, qualifications, and potential. If you need adjustments or support during the recruitment process, please let us know.
At Endava, we’re committed to creating an open, inclusive, and respectful environment where everyone feels safe, valued, and empowered to be their best. We welcome applications from people of all backgrounds, experiences, and perspectives—because we know that inclusive teams help us deliver smarter, more innovative solutions for our customers. Hiring decisions are based on merit, skills, qualifications, and potential. If you need adjustments or support during the recruitment process, please let us know.
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