Descripción de la oferta
Hello!Would you love to improve the way companies take care of their people, their most valuable asset?We are looking for a Staff Software Engineer to join our DX and Performance team at Factorial, with a strong focus on performance, reliability, observability, load testing, and AI-assisted engineering workflows.DX and Performance TeamThe team’s primary goal is to increase Factorial’s quality, performance, and scalability by continuously improving the way we build our product. We focus on strengthening our tools, maintaining foundational elements, and promoting best practices in close collaboration with the rest of the engineering organization.Our mission is to equip product builders with robust, AI-enabled tools and practices to deliver with quality, confidence, and efficiency. We work across teams to improve software patterns, remove obstacles, complete unfinished migrations, reduce tech debt, and raise the overall engineering bar across the company.Within this context, performance and reliability are an increasingly important area of focus. As Factorial continues to scale, we want to strengthen how we define service health, measure system behavior, standardize observability, validate systems under load, and apply modern AI workflows to help engineers interpret signals and act faster.The roleAs a Staff Engineer at Factorial, you’ll be part of a team of 200+ Engineers. We look for people who are curious, proactive, technically strong, and effective communicators. People who enjoy solving complex technical problems, raising standards across teams, and building systems that help the whole organization perform at a higher level.In this role, you will help shape how Factorial defines, measures, and improves performance and service health across the engineering organization. You will work closely with product teams and infrastructure teams to improve observability, load validation, performance visibility, and the engineering practices around these topics.You will partner with senior engineering leaders across product, infrastructure, and DX to raise the company-wide standard for performance and reliability.This is a cross‑cutting staff role with broad impact. You will contribute through hands‑on technical work, technical leadership, and by helping teams adopt stronger practices around SLOs, observability, performance optimization, and AI‑assisted analysis workflows.You’ll work in a multicultural, English‑speaking environment where your technical depth, systems thinking, and problem‑solving skills will directly contribute to our mission of improving business management processes for companies worldwide.Factorial serves 15,000+ active customers and 1M+ active users across business‑critical workflows. Our current environment includes:a large Ruby on Rails backend with GraphQL APIsTypeScript frontend applicationscomplex CI/CD workflowsMySQL with replicas for OLTP workloadsClickHouse for analytical workloadsKafka for event‑driven and asynchronous processinga multi‑region cloud architecturemeaningful TPS, IOPS, concurrency, and sustained operational loadDon’t let unfamiliarity with every part of this stack hold you back. If you have worked in complex systems, know how to reason about performance and reliability at scale, and are excited to help teams build better software with better signals, we want to talk to you.What you will work onDefining and evolving SLIs and SLOs for critical product journeysImproving and standardizing observability, dashboards, and service health visibility across teamsInvestigating bottlenecks and regressions across application, database, asynchronous, and system layersDriving improvements in latency, throughput, scalability, and reliabilityBuilding more structured load testing workflows for critical pathsHelping teams validate system behavior under realistic traffic, concurrency, and tenant‑scale conditionsAnalyzing capacity, saturation, and behavior under peak load and growth scenariosDefining practices and tooling to help prevent performance regressions before productionWorking closely with product and infrastructure teams to align on performance priorities and system behavior under loadDesigning AI‑assisted workflows to support metric and alert interpretation, anomaly analysis, incident investigation, performance insights generation and more.We are looking for profiles that haveStrong hands‑on experience improving performance, scalability, and reliability in complex software systemsExperience defining or operating SLIs, SLOs, and service health frameworksStrong knowledge of observability practices and tools such as DatadogExperience investigating production bottlenecks across application, database, and distributed system layersExperience building or improving load testing, benchmarking, or performance validation workflowsExperience diagnosing tail latency, throughput issues, and performance variability in productionBroad experience working with cloud‑based production systemsStrong communication skills, including technical writing and cross‑team alignmentA proactive mindset and strong ownership mentalityIdeally, you also bringSignificant experience building and operating production systems at scaleExperience working in large‑scale environments with meaningful traffic and operational complexityExperience with Ruby on Rails, MySQL, Kafka, GraphQL, ClickHouse, or equivalent technologiesPrevious experience in Performance Engineering or Reliability EngineeringInterest in modern AI tools and practical use of agentic workflows in engineeringHow We Work (Barcelona)At Factorial, we believe the best products are built when people come together, in person, to collaborate, challenge ideas, and move fast. That’s why our Engineering teams follow an office‑first, flexible approach.We work on‑site several days a week, using that time to connect, align, and innovate as a team. At the same time, we support remote work when it makes sense for focus, flexibility, or personal needs.This balance helps us stay agile, creative, and closely connected, while giving everyone the space to do their best work.About usAt Factorial, we’re building the leading business management software for companies of all sizes. Our platform centralizes key workflows across HR, finance, and operations, freeing teams from manual processes so they can focus on what really matters: leading, growing, and taking care of their people. With over 1,200 employees across 7 markets, we serve 700,000+ users and are one of Europe’s fastest‑growing SaaS companies, backed by top‑tier investors and proudly headquartered in Barcelona. We believe in bold goals, radical ownership, and inclusive collaboration. If you're excited to shape the future of business management technology, we’d love to meet you.Our ValuesWe own it: We take responsibility for every project. We make decisions, not excuses.We learn and teach: We're dedicated to learning something new every day and, above all, share it.We partner: Every decision is a team decision. We trust each other.We grow fast: We act fast. We think that the worst mistake is not learning from them.We believe in diverse talent: We welcome applicants from all backgrounds and strongly encourage people of diverse experiences and identities to apply.We believe in inclusion: We are committed to equal opportunities and actively promote workplace inclusion of people with disabilities. If you would like to learn more about our inclusive recruitment processes, you are welcome to indicate so optionally and we will share additional information with you.Perks of being part of our teamWe care about people and we also offer a lot of benefits for employees:High growth, multicultural and friendly environmentAlan as private health insuranceHealthy life with Wellhub (Gyms, pools, outdoor classes)Save expenses with CobeeLanguage classesBreakfast in the office and organic fruitNora discountsFree caffeine and theinePet Friendly
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