Freelance Software Engineer (Client Hire)

Flexing It is a freelance consulting marketplace that connects freelancers and independent consultants with organisations seeking independent talent.

Flexing It has partnered with Our client, a marketing and infrastructure company is looking to engage with an experienced Senior Software Engineer with a strong background in React TypeScript, .NET, and Azure to help us scale our next-generation AI-powered advertising infrastructure. You’ll be a core member of our engineering team, working across the stack to build seamless, performant, and scalable tools that power ad automation for small and medium-sized businesses. If you’re excited by complex challenges in AI, advertising, and infrastructure and want to help build something from the ground up - we’d love to talk to you.

Key responsibilities:

● Architect, design, and implement scalable frontend and backend systems using React (TypeScript) and .NET (C#)

● Work closely with product and design teams to translate product requirements into robust software solutions

● Develop and maintain integrations with third-party APIs, including advertising platforms (Google Ads, Meta Ads, etc.)

● Optimize cloud infrastructure using Azure for performance, scalability, and cost-effectiveness

● Collaborate with customer success team to build intelligent ad creation and optimization workflows

● Own features end-to-end and participate in technical decisions across the platform

● Conduct code reviews and mentor junior engineers

● Continuously improve engineering processes, testing practices, and system reliability.

Duration- 6 months

Capacity- Full time

Location- Remote (Preference for NCR Delhi)

Skills Required

● 5 plus years of professional software engineering experience

● Strong experience building modern web applications using React (TypeScript)

● Proficiency with .NET for backend development

● Hands-on experience with Microsoft Azure services and DevOps workflows

● Solid understanding of API development, system design, and secure software practices

● Experience working in agile teams with strong communication and collaboration skills

Preferred (Nice to Have)

● Familiarity with Google Ads API, Meta Ads API, or other adtech platforms

● Exposure to AI/ML technologies, particularly in content generation or optimization

● Experience working in a startup or fast-paced product environment