Site Reliability Engineer (SRE)

Citigroup Inc.; Warszawa; On-site; PLN 165,000 - 281,000; Full time

Benefits offered by this job

Pension Plan

Private Medical Care

Life Insurance

Employee Assistance Program

Parental Leave

Sport Card

Discretionary incentive

Cafeteria benefits

Job summary

Citigroup Inc. is seeking a Site Reliability Engineer (SRE) to join our Citi Solutions Center Poland. You will help design, implement, and maintain reliable infrastructure for mission‑critical applications, emphasizing observability and automation.

You will work with cutting‑edge tools and modern pipelines (OpenShift, Tekton, Harness) while applying Generative AI to improve reliability and performance. Hybrid work up to 2 days per week.

Qualifications

• Proficiency in Python, Java, or Node.js as core languages.
• Solid understanding of the Software Development Lifecycle (SDLC).
• Experience with observability concepts, SLOs/SLIs, and monitoring.
• Familiarity with Grafana, Kibana, Prometheus, and AppDynamics.
• Knowledge of OpenShift, Tekton, and Harness pipelines is a plus.
• Strong problem solving, analytical, and collaborative skills.

Responsibilities

• Design, implement, and maintain monitoring solutions with Grafana, Kibana, and AppDynamics.
• Define SLOs/SLIs for developer pipelines to ensure high availability.
• Identify and resolve application performance bottlenecks proactively.
• Develop automation scripts in Python, JavaScript, or Go to streamline tasks.
• Focus on Generative AI initiatives and automation projects.
• Own complex problems and drive resolution with the team.
• Balance proactive solutioning with incident resolution and RCA.
• Analyze logs and metrics for root cause analysis.

Skills

Python

Java

Node.js

SDLC understanding

Observability

Agile methodologies

Communication skills

Tools

Grafana

Kibana

Prometheus

AppDynamics

OpenShift

Tekton

Harness

Tableau

Job description

Site Reliability Engineer (SRE)

DevOps Support at Citi is at the cusp of a major transformation. The production support team is transitioning to a complete Site Reliability Engineering (SRE) model, leveraging established SRE principles and the latest technologies in Generative AI. We are adopting agile methodologies to advance SRE tasks focused on observability, reliability, and resiliency for our developer tools.

We are seeking a highly motivated and results-oriented Site Reliability Engineer (SRE) to join our growing team. As an SRE, you will play a critical role in ensuring the reliability, performance, and scalability of our mission‑critical applications and infrastructure. The role requires you to learn and embrace multiple tenets of Support and SRE. You will be responsible for designing, implementing, and maintaining systems that deliver a seamless experience for our users.

Responsibilities

• Design, implement, and maintain monitoring solutions using tools like Grafana, Kibana, and AppDynamics.
• Define SLOs/SLIs for developer pipeline applications to ensure high availability and performance.
• Proactively identify and resolve application performance bottlenecks.
• Develop automation scripts using Python, JavaScript, or Go to streamline operational tasks.
• Focus on projects related to Generative AI and task automation.
• Take ownership of complex problems and collaborate with the team to drive them to resolution.
• Balance proactive solution‑seeking with hands‑on incident resolution.
• Analyze system logs and metrics to perform root cause analysis of issues.

As an SRE, you will:

• Gain exposure to cutting‑edge technologies used by Citi, such as Tekton and Harness on OpenShift.
• Gain hands‑on experience in Generative AI implementation and building automation models from idea inception to product delivery.
• Learn the end‑to‑end process of building observability for supported applications and participate in designing SLOs/SLIs to improve application performance.

Qualifications

• Proficiency in Python, Java, or Node.js (preferred).
• Good understanding of the Software Development Lifecycle (SDLC) and pipeline management.
• Basic understanding of observability principles and SLOs/SLIs.
• Experience using monitoring tools such as Grafana, Kibana, Prometheus, and AppDynamics.
• Basic working knowledge of data visualization tools like Tableau.
• Understanding of Agile concepts and processes.
• Working or theoretical knowledge of OpenShift, Tekton, and Harness pipelines.
• Excellent problem‑solving and analytical skills. Strong communication and collaboration skills.

What we can offer you

By joining Citi Solutions Center Poland, you will not only be part of a business casual workplace with a hybrid working model (currently up to 2 days working at home per week), but also (potentially, subject to final offer) receive a competitive base salary and enjoy a whole host of additional benefits which can include:

• Employer paid Defined Contribution Pension Plan contribution of 6% of employee’s pensionable earnings (PPE Program)
• Employer paid Private Medical Care Package for employees and Private Medical Care Packages for certain family members available at preferential rates
• Employer paid Life Insurance Program for employees and Life Insurance for certain family members available at preferential rates
• Employee Assistance Program financed by Employer
• Paid Parental Leave Program (maternity and paternity leave; statutory and 2 weeks additional paid paternity leave)
• Sport Card for employees subsidized via Social Benefits Fund and Sport Cards for certain family members available at preferential rates
• Additional benefits from Company’s Social Benefit Fund, in particular: Holidays Allowance, support for sport and cultural activities, team building events.
• Additional day off for volunteering
• Cafeteria/ flex benefit – a company benefits system which enables employees to select and purchase benefits offered by a provider and available for employees on the platform.
• Opportunity to receive an annual discretionary incentive award
• Special offers and discounts for employees
• Copy and paste the URL below into a new tab on your web browser to view the Remuneration Regulations extract: https://tbcdn.talentbrew.com/company/287/cms/v3/docs/policies/RemunerationRegulations-KeyProvisions-CitibankEurope_plc_05012025_A.pdf

Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self every day. We want the best talent around the world to be energized to join us, motivated to stay, and empowered to thrive.

Job Family Group

Technology

Job Family

Applications Support

Time Type

Full time

Primary Location Full Time Salary Range

zł165,020.00 - zł280,980.00

Most Relevant Skills

Please see the requirements listed above.

Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

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