Lead Backend Engineer

Lead Backend Engineer ( Python, Go)

Location: Bangalore (Office)

Experience: 4-7 years (Senior-level)

Role Type: Full-time (Tech Lead)

About TestZeus

TestZeus is pioneering the next generation of autonomous software testing with AI agents. We’re the team behind Hercules, the world’s first open-source testing agent. We combine large language models, multi-agent orchestration, and retrieval pipelines to deliver zero-maintenance testing for web and API workloads. We are seeking a Lead Backend Engineer who can own the engine that powers Hercules: distributed microservices, event-driven pipelines, and reliable APIs. You’ll lead a small backend/DevOps pod, balance Python agility with Go performance, and ensure our platform is robust, observable, and scalable.

• Design and build production microservices in Go (high-throughput workloads) and Python (FastAPI/Flask for developer-friendly APIs).
• Define and maintain gRPC/REST contracts , authentication/authorization flows, and rate-limiting strategies.
• Own database migrations and schema evolution for services in production.
  

• Implement and operate Kafka or RabbitMQ pipelines for job queues, ingestion, and telemetry.
• Design and optimise PostgreSQL schemas, indexes, and queries for performance and reliability.
• Use Redis (or similar) for caching, rate limiting, and ephemeral data patterns.
  

• Containerise services using Docker and orchestrate them using Kubernetes (Helm/Kustomize).
• Set up and maintain CI/CD pipelines (GitHub Actions or similar) and infrastructure-as-code (Terraform).
• Establish observability : metrics, logs, and traces via Prometheus, Grafana, ELK/EFK or equivalents.
• Define SLOs, alerts, and incident playbooks , and lead post-mortems in a blameless manner.
  

• Plan and implement horizontal scaling , blue-green/rolling deployments, and capacity management.
• Manage secrets, TLS, and secure configurations , working with cloud-native security best practices.
• Conduct cost, performance, and capacity reviews to keep the platform efficient as it grows.
  

• Expose and consume backend endpoints for LLM evaluation, vector search (Pinecone/Weaviate/mem0), and feedback loops .
• Collaborate closely with AI engineers to integrate agents with backend services and event pipelines.
• Ensure backend systems are agent-ready : idempotent, observable, and robust to retries and failures.
  

• Lead 2–3 backend/DevOps engineers through design docs, code reviews, and technical decision-making.
• Drive post-mortems and architectural discussions, fostering a blameless, learning-first culture .
• Partner with frontend and AI teams to deliver user-visible features end-to-end.
• Communicate clearly with founders and product stakeholders on trade-offs, timelines, and risks.
  

• B.E./B.Tech/M.S. in Computer Science or a related field, or equivalent practical experience.
  

• 4–7 years of total experience, strongly back-end-centric .
• Experience in leading projects or mentoring engineers (formal or informal leadership).
  

• Backend Engineering
• 4–5 years building production microservices in Go and Python (FastAPI/Flask or similar).
• Proven delivery of at least one high-concurrency, production-facing service .
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• Event & Data Stack
• Hands-on experience with Kafka or RabbitMQ for queues and event pipelines.
• Strong PostgreSQL design skills (schemas, indexing, performance tuning).
• Practical usage of Redis (or equivalent) for caching and transient data.
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• DevOps & Reliability
• Solid experience with Kubernetes & Docker for deploying and managing services.
• Ownership of CI/CD pipelines (GitHub Actions or similar).
• Familiarity with monitoring & observability tools such as Prometheus, Grafana, ELK/EFK.

• Experience integrating with LLM services or vector databases (Pinecone, Weaviate, pgvector, mem0, etc.).
• Exposure to compliance-heavy or multi-region systems (data residency, failover, etc.).
• Prior experience in high-scale, SaaS, or developer-tools companies.

• Impact & Ownership
• Power thousands of autonomous tests daily by owning the backend core of Hercules.
• Influence architecture, tooling, and engineering culture from an early stage.
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• Competitive Compensation & Equity
• Market-aligned salary with meaningful stock options .
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• Growth & Learning
• Deep exposure to Kubernetes, cost-optimised cloud infra, AI integrations, and event-driven architectures .
• Support for conferences, learning budgets, and open-source contributions .
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• Collaborative Culture
• Work in small, focused squads with direct access to founders.
• Health cover, PTO, and a Bangalore workspace optimised for high-bandwidth collaboration.

To apply, please share the following details with us:

1. Your CV
2. Your Current and Expected CTC
3. Years of experience in Backend Engineering (specifically with Python and Go )
4. Links to Public Work (e.g., GitHub, Medium, personal website)

Submit all the above to:

• We’re excited to hear from you!