Lead Software Engineer — Multi-Tenant SaaS (C#/Azure)

Confluence Technologies, Inc.; España; Hybrid; EUR 90,000 - 120,000; Full time

Benefits offered by this job

Time Off benefits

Career Development

Social Events

Referral Bonus

Flexible working

Job summary

Confluence Technologies, Inc. in Valencia, Spain is seeking a Lead Software Engineer to join the Omnia Platform team. This hands‑on leadership role focuses on building scalable backend services with C#/.NET, data processing with Python, and frontend work with React.

You will mentor engineers, shape architecture for a multi‑tenant SaaS, and collaborate across time zones with the global engineering group. Hybrid work in Valencia with a strong emphasis on delivery and quality.

Qualifications

• Significant software engineering experience with deep expertise in C# and .NET.
• Strong backend development experience within enterprise SaaS environments.
• Experience with MongoDB or comparable NoSQL technologies.
• Hands‑on experience with cloud platforms, containerised applications, and Kubernetes.
• Experience building and operating multi‑tenant software applications.
• Strong understanding of software architecture, scalability, and system design.
• Excellent problem‑solving skills and ability to work independently on complex technical challenges.

Responsibilities

• Design and build scalable backend services and APIs using C# and .NET.
• Work with MongoDB Atlas, optimising data models and application performance.
• Drive the reliability, deployment, and scalability of cloud‑native services running on Azure and Kubernetes.
• Develop data processing and calculation workflows using Python and modern dataframe technologies.
• Contribute across the full stack, building user‑facing functionality with React, TypeScript, and Redux.
• Champion best practices in software quality, testing, code reviews, and maintainability.
• Collaborate closely with Product, Architecture, and Engineering teams to shape solutions that deliver real client value.
• Mentor engineers, raise technical standards, and help foster a culture of continuous improvement.
• Leverage AI‑assisted development tools to accelerate delivery and enhance engineering effectiveness.

Skills

C# and .NET

MongoDB

Cloud platforms

Kubernetes

Python

React/TypeScript/Redux

Multi-tenant SaaS

Software architecture

Mentoring

DevOps/CI-CD

AI-assisted tools

Tools

MongoDB Atlas

AKS

Azure

Kubernetes

Job description

Confluence Technologies, Inc. in Valencia, Spain is seeking a Lead Software Engineer to join the Omnia Platform team. This hands‑on leadership role focuses on building scalable backend services with C#/.NET, data processing with Python, and frontend work with React.

You will mentor engineers, shape architecture for a multi‑tenant SaaS, and collaborate across time zones with the global engineering group. Hybrid work in Valencia with a strong emphasis on delivery and quality.