Lead Backend Engineer

Lead Backend Engineer (Python, Go)Location : Bangalore (Office)Experience : 4-7 years (Senior-level)Role Type : Full-time (Tech Lead)About TestZeusTestZeus 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.Key Responsibilities1. Backend Architecture & MicroservicesDesign and buildproduction microservicesinGo(high-throughput workloads) andPython(FastAPI / Flask for developer-friendly APIs).Define and maintaingRPC / REST contracts, authentication / authorization flows, and rate-limiting strategies.Own database migrations and schema evolution for services in production.2. Eventing & Data LayerImplement and operateKafka or RabbitMQ pipelinesfor job queues, ingestion, and telemetry.Design and optimisePostgreSQLschemas, indexes, and queries for performance and reliability.UseRedis (or similar)for caching, rate limiting, and ephemeral data patterns.3. DevOps, Reliability & ObservabilityContainerise services usingDockerand orchestrate them usingKubernetes(Helm / Kustomize).Set up and maintainCI / CD pipelines(GitHub Actions or similar) andinfrastructure-as-code(Terraform).Establishobservability : metrics, logs, and traces via Prometheus, Grafana, ELK / EFK or equivalents.DefineSLOs, alerts, and incident playbooks, and lead post-mortems in a blameless manner.4. Scalability, Security & CostPlan and implementhorizontal scaling, blue-green / rolling deployments, and capacity management.Managesecrets, TLS, and secure configurations, working with cloud-native security best practices.Conductcost, performance, and capacity reviewsto keep the platform efficient as it grows.5. AI / Agent Platform IntegrationExpose and consume backend endpoints forLLM 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 areagent-ready : idempotent, observable, and robust to retries and failures.6. Leadership, Mentorship & CollaborationLead2–3 backend / DevOps engineersthrough design docs, code reviews, and technical decision-making.Drivepost-mortemsand architectural discussions, fostering ablameless, learning-first culture.Partner withfrontend and AI teamsto deliver user-visible features end-to-end.Communicate clearly with founders and product stakeholders on trade-offs, timelines, and risks.Qualifications & SkillsEducationB.E. / B.Tech / M.S. in Computer Scienceor a related field, or equivalent practical experience.Experience4–7 yearsof total experience, stronglyback-end-centric.Experience inleading projectsormentoring engineers(formal or informal leadership).Must-Have SkillsBackend Engineering4–5 yearsbuildingproduction microservicesinGoandPython(FastAPI / Flask or similar).Proven delivery of at leastone high-concurrency, production-facing service.Event & Data StackHands-on experience with Kafka or RabbitMQfor queues and event pipelines.StrongPostgreSQLdesign skills (schemas, indexing, performance tuning).Practical usage ofRedis(or equivalent) for caching and transient data.DevOps & ReliabilitySolid experience with Kubernetes & Dockerfor deploying and managing services.Ownership ofCI / CD pipelines(GitHub Actions or similar).Familiarity withmonitoring & observabilitytools such as Prometheus, Grafana, ELK / EFK.Nice-to-HaveExperience integrating withLLM servicesorvector databases(Pinecone, Weaviate, pgvector, mem0, etc.).Exposure tocompliance-heavyormulti-regionsystems (data residency, failover, etc.).Prior experience inhigh-scale, SaaS, or developer-toolscompanies.Why Join TestZeus?Impact & OwnershipPower thousands of autonomous tests dailyby owning the backend core of Hercules.Influence architecture, tooling, and engineering culture from an early stage.Competitive Compensation & EquityMarket-aligned salary with meaningful stock options.Growth & LearningDeep exposure to Kubernetes, cost-optimised cloud infra, AI integrations, and event-driven architectures.Support forconferences, learning budgets, and open-source contributions.Collaborative CultureWork in small, focused squadswith direct access to founders.Health cover, PTO, and aBangalore workspaceoptimised for high-bandwidth collaboration.Application ProcessTo apply, please share the following details with us : YourCVYour Current and Expected CTCYears of experiencein Backend Engineering (specifically withPython and Go)Links toPublic Work(e.G., GitHub, Medium, personal website)Submit all the above to : hiring@testzeus.comwe’re excited to hear from you!