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Job Code: DTDLPL-5884 | Deutsche Telekom Digital Labs Private Limited Gurugram, Haryana, India 2 positions Expires on 31/08/2026 Required Experience 10 - 15 Years Skills java, microservices, designing Job Description We are seeking a Senior Principal Engineer Backend & AI to lead the architecture, design, and development of highly scalable backend platforms while driving AI-powered product innovation. This is a hands-on technical leadership role responsible for defining engineering strategy, mentoring senior engineers, and building cloud-native distributed systems integrated with modern AI technologies. The ideal candidate combines deep backend engineering expertise with practical experience building production AI/LLM applications. Responsibilities You Will Define long-term technical architecture and engineering roadmap. Lead the design of highly scalable distributed systems. Establish engineering best practices across architecture, coding, testing, security, and DevOps. Drive technical decisions across multiple teams. Mentor Staff and Senior Engineers. Review critical architecture and design proposals. Lead performance optimization and system reliability initiatives. Design microservices-based architectures. Build high-performance REST and GraphQL APIs. Design event-driven systems using Kafka or similar messaging platforms. Develop scalable data processing pipelines. Optimize databases for high throughput and low latency. Ensure high availability, resilience, and disaster recovery. Build production-grade AI applications using LLMs. Design Retrieval-Augmented Generation (RAG) architectures. Develop AI agents and workflow automation. Implement vector search and semantic retrieval. Integrate foundation models from OpenAI, Anthropic, Google, or open-source models. Evaluate AI model quality, latency, and cost. Implement guardrails, prompt engineering, and AI observability. Build AI APIs and inference services. You Must Have Bachelor's or Master's degree in Computer Science or related field. 1218+ years of software engineering experience. 5+ years leading architecture for large-scale backend systems. Experience leading engineering teams across multiple products. Strong system design and distributed systems expertise. Experience building AI-enabled enterprise applications. .
Here's how to pick the right one and stand out in your application.
144.883Jobs
31.687IN
81%EN
That number is real. WorkMundi's database shows 144,883 open engineer roles across the world. India has the most with 31,687 jobs, followed by the United States with 30,084. If you just finished reading one job ad and felt paralyzed by choice, you're not alone—but this scale is actually an advantage. It means you can afford to be selective.
Start by geography and language. The majority of engineer ads—117,837 of them—have the job posting text written in English. Use that as one filter, but remember: the ad text language tells you nothing about whether the role actually requires you to speak English day-to-day. Read the job description carefully. Then check which countries have the volume you're targeting. Singapore, Poland, and Australia round out the top five after India and the US.
Next, learn who's hiring. Accenture has posted 2,801 engineer roles. andurilindustries, speechify, and jobgether are also actively recruiting. If you're applying to one of these names, research their hiring patterns and interview style before you apply. That homework pays off.
When you interview, expect the question every engineer hears: 'Tell me about a time you had to debug a problem that wasn't in your job description.' Have a specific story ready—not a general one. Name the tools, the deadline pressure, and what you learned. Hiring managers listen for whether you see problem-solving as part of the role itself, not a favour.