Founding Senior Backend Engineer About UsTracer is an early-stage, venture-backed startup building the open source AI SRE agent for production engineering.We are backed by experienced operators and investors who believe AI for production systems will be one of the defining enterprise software categories of the next decade. Our team is small, senior, and highly execution-focused.🚀 About the RoleTracer is building an open source AI SRE agent (https://github.com/Tracer-Cloud/opensre) that automatically investigates production incidents across the entire production stack.We're hiring a Founding Senior Backend Engineer in London to own the core architecture and ship an agent that produces grounded RCAs and fix suggestions across production infrastructure.Humans stay in control of production decisions, the agent does the heavy lifting.This is a hands-on, high-ownership role at the center of the product.💻 You’ll Love Our Tech StackPython + LangGraph (for multi-agentic alert investigation)Rust (because we like systems that are fast and correct)ClickHouse (high-volume event + investigation history at scale)AWS + Terraform (infrastructure that builds itself)Next.js + TypeScript (because front-end should be sexy too)💼 What You’ll DoYou’ll own the core systems that turn an alert into a defensible investigation and RCA. In practice, you will:Architect and build the core alert, investigation, root cause analysis (RCA) pipeline in PythonDesign and implement key systems including:Alert ingestion + normalizationContext enrichment + correlationProblem framing outputsHypothesis orchestration engineInvestigation execution runtimeInvestigation artifacts + reportingDrive core architecture decisions and ensure the system is observable, auditable, and reliable from day onePartner with founders to ship a small set of high-value alert types that work extremely well, then expand coverage deliberatelyBuild customer-ready integrations across the pipeline stackEducate and guide future engineers, setting a high bar for technical quality, speed, and pragmatism🌟 What We’re Looking For5+ years (ideally 10+) professional software engineering experience.Proven track record of shipping real products at high velocityStrong backend and distributed-systems foundations, ideally with experience in data platforms and production pipeline stacks and incident/observability tooling.Experience working at an early-stage startup and bonus points for having joined earlier.High ownership and sharp product instincts: you build what matters and cut what doesn’t.💸 Compensation & BenefitsTotal Compensation Range: £70,000 – £130,000+ (salary and equity value)We structure compensation as follows:Competitive base salaryMeaningful equity ownership with real upsideFinal package depends on experience, impact, and seniorityWhat’s included:Salary + equity (equity typically ~0.3% – 2%+)30 days annual leaveEmployee health insuranceVisa sponsorshipWeekly team dinners and socialsRegular team offsites and trips (our most recent was Kenya 🇰🇪)The satisfaction of building a world-class AI-powered product with an exceptional team🧠 Application Requirements (Read Carefully)We are intentionally selective.Please answer all of the following in your application.Applications that do not include these will not be reviewed.Why do you consider yourself an exceptional engineer? (Be specific, we’re interested in evidence, not adjectives.)Why Tracer? What about this problem, product, or moment resonates with you?Links we should see:GitHubPortfolio, blog posts, talks, or anything else that shows how you think and build⚒️ Our Recruitment ProcessIntroductory Call (15-30 mins): Call with our hiring manager to discuss your background, motivations, and learn more about TracerRole Fit Interview (45 mins): Meet with your manager or a similar-level team member to review your working style, skills, and fit for the roleTake-home & Competency Deep Dive (1 hour): Complete a practical exercise (e.g., case study, presentation, or technical problem-solving) to explore the role's responsibilities and expectationsOn-site meetup (Half Day): On-site interviews and team lunch at our headquarters to ask any questions and experience our office and culture firsthandOffer: Final decision and offer