Lead Software Engineer (.NET + Azure)

We are seeking a Lead Software Engineer (Deputy Tech Lead) to drive the design and build of a greenfield enterprise integration platform on Microsoft Azure from scratch. In this role, you will combine hands-on implementation with technical leadership-helping architect contract-first integration patterns, setting pipeline quality gates, mentoring engineers, and acting as the Technical Lead’s trusted deputy across a complex, multi-vendor ecosystem for a UK-based sustainability organisation.

Responsibilities

• Architecture & Technical Ownership: Partner with the Integration Architect to build core platform components-contract repositories, API/event catalogues, APIOps pipelines, Azure API Management, Event Hubs, Service Bus, and managed file exchange.
• Hands-on Delivery: Build, test, and deploy key integrations using C#/.NET and Infrastructure as Code (Bicep/Terraform), ensuring high performance, scalability, and strict security standards (OAuth2, HMAC, Key Vault).
• Deputy Leadership & Mentorship: Serve as deputy to the Technical Lead-running technical discussions, making day-to-day decisions in their absence, conducting constructive code reviews, and mentoring integration engineers.
• Cross-Team & Data Platform Alignment: Collaborate closely with the Data Platform team to establish data contracts, operational boundaries, and zero-copy access to source data (Databricks / Microsoft Fabric / Purview).
• Standards & Vendor Alignment: Enforce contract-first integration standards (OpenAPI, JSON Schema, Avro) and pipeline quality gates to align external vendor teams on consistent integration patterns.

Min requirements

• Integration & Backend Experience: 8+ years of hands-on experience in enterprise integration or backend engineering.
• Azure Integration Stack: Deep production experience with Azure API Management (policies, products, deployment as code), Azure Service Bus, Event Hubs, and serverless compute (Azure Functions / Logic Apps).
• Contract-First & Messaging: Expertise in REST API design using OpenAPI and JSON Schema, as well as asynchronous messaging patterns.
• Cloud Security & Infrastructure: Strong knowledge of Entra ID, Key Vault, private endpoints, OAuth2, HMAC, Bicep/Terraform, and Azure DevOps CI/CD pipelines.
• Programming Languages: Proficiency in C# and .NET (or a comparable enterprise backend language).
• Communication & Stakeholder Management: Outstanding written and spoken English (B2+), with proven ability to whiteboard with engineers and present technical trade-offs clearly to client architects and senior stakeholders.

Would be a plus

• Data & Schema Governance: Experience with Azure API Center, Avro, schema registries, APIOps, or data governance frameworks (e.g., Microsoft Purview).
• Modern Data Platforms: Familiarity with Databricks, Microsoft Fabric, or OneLake integrations.
• Enterprise Platforms: Experience integrating with major CRM, ERP, or ITSM platforms.
• Regulated / Multi-Vendor Environments: Prior experience in public-scheme, regulated, or multi-supplier programmes with formal design authorities.

We offer

• Opportunity to work on bleeding-edge projects
• Work with a highly motivated and dedicated team
• Competitive salary
• Flexible schedule
• Benefits package - medical insurance, sports
• Corporate social events
• Professional development opportunities
• Well-equipped office

About us

Grid Dynamics (NASDAQ: GDYN) is a leading provider of technology consulting, platform and product engineering, AI, and advanced analytics services. Fusing technical vision with business acumen, we solve the most pressing technical challenges and enable positive business outcomes for enterprise companies undergoing business transformation. A key differentiator for Grid Dynamics is our 8 years of experience and leadership in enterprise AI, supported by profound expertise and ongoing investment in data, analytics, cloud & DevOps, application modernization and customer experience. Founded in 2006, Grid Dynamics is headquartered in Silicon Valley with offices across the Americas, Europe, and India.