Senior Site Reliability Engineer

Allegro.eu S.A.; Warszawa; Hybrid; PLN 260,000 - 460,000; Full time

Benefits offered by this job

Flexible hours

RSUs

Annual bonus

Well-located offices

MacBook Pro

Fringe benefits cafeteria

English classes

Training budget

Volunteer day

Social events

Job summary

Allegro.eu S.A. is seeking a senior reliability engineer to lead large-scale system stability initiatives across a vast distributed architecture. You will drive the design of complex reliability platforms, mentor engineers, and own critical CI/CD and IaC processes.

A focus on Chaos Engineering and AI-driven incident response will be central to this role. You will work in a hybrid model with flexible hours, participate in ownership-driven development, and help scale Allegro's infrastructure and

Qualifications

• Solid engineering background with distributed systems and microservices architecture.
• Proficiency in at least one programming language used for infrastructure automation, tooling, and backend services (Kotlin, Java, Python or Go).
• Hands-on experience with containerized environments and orchestration tools (Kubernetes and Docker).
• Experience with Chaos Engineering and performance testing frameworks (Gatling or similar).
• Deep experience configuring monitoring and observability stacks (Prometheus, Grafana, ELK).
• Strong knowledge of CI/CD pipelines and infrastructure as code (IaC).
• Data-driven mindset, mentoring ability, and sharing code quality standards.

Responsibilities

• Lead and coordinate team-level projects to improve system reliability across a massive distributed architecture.
• Drive design and implementation of complex reliability solutions and internal platforms.
• Design and build an AI agent to enhance incident response and act as senior Incident Commander during outages.
• Develop and scale self-service performance testing with real-time observability.
• Build automated resiliency platform for fault injection and quarterly DC failovers.
• Own reliability of team systems, manage technical debt, automate infrastructure.

Skills

Distributed systems

Kubernetes

Docker

Kotlin/Java/Python/Go

Chaos Engineering

Gatling

Prometheus/Grafana/ELK

CI/CD

IaC

Mentoring

Tools

Kubernetes

Docker

Job description

In your daily work, you will handle the following tasks:

• Leading and coordinating team-level projects to improve system reliability across our massive distributed architecture.
• Driving the design and implementation of complex reliability solutions and internal platforms, heavily utilizing our core ecosystem.
• Designing and building an AI agent to revolutionize our incident response workflow, alongside acting as a senior Incident Commander during major outages and leading blameless post-mortems.
• Developing and scaling our self-service performance testing platform, empowering engineering teams to run large-scale, distributed load tests with real-time observability.
• Building an automated resiliency platform for continuous fault injection and driving high-stakes, quarterly full Data Center failover experiments.
• Owning the reliability of the team's systems, managing technical debt, and automating infrastructure.
• Mentoring less experienced engineers and setting the standard for team code quality.
• Influencing how the team communicates and makes decisions on difficult system architecture problems at the Allegro scale.

We are looking for people with:

• Solid Engineering Background with a deep understanding of distributed systems and microservices architecture.
• Proficiency in at least one programming language used for infrastructure automation, tooling, and backend services (Kotlin, Java, Python or Go).
• Hands-on, advanced experience managing containerized environments and orchestration tools, specifically Kubernetes and Docker, alongside networking and service mesh concepts.
• Hands-on experience with Chaos Engineering practices (e.g., fault injection, failure scenarios) and performance testing frameworks (practical knowledge of Gatling or similar tooling is a plus).
• Deep experience configuring monitoring and observability stacks (e.g., Prometheus, Grafana, ELK), paired with a proven ability to identify single points of failure in complex systems and act as an Incident Commander during major outages.
• Strong practical knowledge of building and maintaining CI/CD pipelines and managing infrastructure using IaC tools.
• A strong sense of ownership and a data-driven mindset, with a track record of mentoring less experienced engineers, setting code quality standards, and shaping team architecture decisions.

What's in it for you:

• Flexible working hours in the hybrid model (4/1) - working hours start between 7:00 a.m. and 10:00 a.m. We also have 30 days of occasional remote work.
• Long term discretionary incentive plan based on Allegro.eu shares (restricted stock units).
• Annual bonus based on your annual performance and company results.
• Well-located offices (with e.g. fully equipped kitchens, bicycle parking, terraces full of greenery) and excellent work tools (e.g., raised desks, ergonomic chairs, interactive conference rooms).
• A 16\" or 14\" MacBook Pro or corresponding Dell with Windows (if you don't like Macs) and all the necessary accessories.
• A wide selection of fringe benefits in a cafeteria plan - you choose what you like (e.g., medical, sports or lunch packages, insurance, purchase vouchers).
• English classes that we pay for related to the specific nature of your job.
• A training budget, inter-team tourism, hackathons, and an internal learning platform where you will find multiple trainings.
• An additional day off for volunteering, which you can use alone, with a team, or with a larger group of people connected by a common goal.
• Social events for Allegro people - Spin Kilometers, Family Day, Fat Thursday, Advent of Code, and many other occasions we enjoy.

And that's just the beginning! You can read more about the benefits here .

#goodtobehere means that:

• You will join a team you can count on - we work with top-class specialists who have knowledge- and experience-sharing in their DNA.
• You will love our level of autonomy in team organization, the space for continuous development, and the opportunity to try new things.
• You get to choose which technology solves the problem and you are responsible for what you create.
• You will value our Developer Experience and the full platform of tools and technologies that make creating software easier. We rely on an internal ecosystem based on self-service and widely used tools such as Kubernetes, Docker, Consul, GitHub, and GitHub Actions. Thanks to this, you can contribute to Allegro from your very first days on the job.
• You will be equipped with modern AI tools to automate repetitive tasks, allowing you to focus on developing new services and refining existing ones (also leveraging AI support).
• You will create solutions that will be used (and loved!) by your friends, family and millions of our customers.
• You will meet the Allegro Scale, which starts with over 1000 microservices, an open-source data bus (Hermes) with 300K+ rps, a Service Mesh with 1M+ rps, tens of petabytes of data, and production-used machine learning.
• You will become part of Allegro Tech - We speak at industry conferences, cooperate with tech communities, run our own blog (it's been over 10 years!), record podcasts, lead guilds, and we organize our own internal conference - the Allegro Tech Meeting. We create solutions we love (and can) to talk about!

Don’t wait until you join us! Let's meet online!

Get to know our team, take a peek at our office life and check out what else we do at Allegro.