L3 Support Engineer

Akkodis; Madrid; Presencial; EUR 65.000 - 90.000; Jornada completa

Descripción de la vacante

AKKODIS in Madrid seeks a Senior L3 Application Support Engineer to join an international banking project, supporting mission-critical applications in a distributed, highly available environment.

You will troubleshoot complex incidents, perform root-cause analysis, and drive performance optimization across microservices, REST APIs, Kafka, and SQL databases, collaborating with Software Engineers, Service Owners, and Product Owners in an Agile setting.

Formación

• 3+ years in L3 App Support or SRE within high-availability environments.
• Strong backend troubleshooting with .NET/C#.
• Experience with distributed architectures, REST APIs, microservices and messaging (Kafka/MQ).
• Proficient with MSSQL and data analysis, plus monitoring tools (Dynatrace, Splunk).

Responsabilidades

• Act as the L3 escalation point for critical production incidents and drive resolution.
• Perform root cause analysis and implement long-term solutions with dev teams.
• Coordinate incident response and on-call coverage, including after-hours.
• Analyze performance and integrity issues across distributed microservices and event streams.

Conocimientos

L3 Application Support

Backend troubleshooting .NET/C#

Distributed architectures

REST APIs & Microservices

SQL / MSSQL data analysis

Kubernetes

Windows & Linux

On-call rotation

English communication

Fintech/Banking domain

Herramientas

Dynatrace

Splunk

Grafana

Kafka

RabbitMQ/MQ

GitLab/Jenkins CI/CD

Descripción del empleo

At AKKODIS, a global leader in engineering and digital services, we are looking for talent like you! We are an international company specialized in technology, engineering and innovation, supporting the digital transformation of leading organizations across multiple industries.

We are currently looking for a Senior L3 Application Support Engineer to join an international banking project, working within a global fintech operations team and supporting mission‑critical applications in a highly available and distributed environment.

About the role

We are looking for a proactive and hands‑on L3 Application Support Engineer who will act as the highest technical escalation point for complex production incidents.

You will work closely with Software Engineers, Service Owners and Product Owners in an Agile environment, performing deep‑dive troubleshooting, root cause analysis and performance optimization across distributed microservices and event‑driven architectures.

Key responsibilities

Act as the L3 escalation point for critical production incidents, driving resolution through log analysis, code debugging and telemetry. Perform Root Cause Analysis (RCA) for complex incidents and outages, working with development teams to implement long‑term solutions.

Coordinate incident resolution by assessing issues, involving the appropriate technical teams and ensuring timely service restoration. Participate in live incident calls and maintain technical ownership until services are fully restored. Monitor, troubleshoot and optimize distributed microservices and event streams across production environments. Analyse data and troubleshoot performance or integrity issues using complex SQL queries. Participate in release management, operational readiness reviews and deployments in Kubernetes environments.

Work with REST APIs, Microservices, MQ and Kafka, including event handling and topic troubleshooting. Participate in a rotating 24/7 on‑call schedule supporting mission‑critical applications.

What are we looking for?

• 3+ years of hands‑on experience in L3 Application Support, Site Reliability Engineering or Software Engineering within high‑availability environments.
• Strong backend troubleshooting experience with .NET and C#.
• Solid knowledge of distributed architectures, REST APIs, Microservices, MQ and Kafka.
• Strong experience with MSSQL and relational databases, including data analysis and troubleshooting.
• Hands‑on experience with Kubernetes, Windows and Linux environments.
• Experience working with Dynatrace and Splunk. Knowledge of Grafana is a plus.
• Ability to participate in an on‑call rotation, including evening and weekend coverage when required.
• Excellent written and spoken English, with the ability to collaborate effectively in an international environment. Nice to have Experience with React or other frontend frameworks, particularly for end‑to‑end issue tracing. Previous experience in Fintech, Digital Banking or Investment Banking. Exposure to CI/CD pipelines, such as GitLab or Jenkins. Experience with Active Directory administration and tasks.

What do we offer? The opportunity to work on a global banking/fintech project. An international environment with collaboration across different teams and countries. A technically challenging role working with microservices, event‑driven architectures and mission‑critical applications. The opportunity to work with modern technologies including .NET, C#, Kafka, Kubernetes, MSSQL, Dynatrace and Splunk. Join a dynamic and international environment with opportunities for professional growth. xohynlm Are you an experienced L3 Application Support Engineer looking for your next challenge in an international banking environment? We would love to hear from you!

L3 Support Engineer Madrid, madrid, Spain