Site Reliability Engineer

Summary

Join Leadtech as a Senior Site Reliability Engineer and lead our strategies during a critical growth phase. This role requires a deep understanding of B2B fintech marketing and combines strategic thinking with hands-on execution. You will define and drive Agile DevOps, establish software architecture patterns, provide architecture guidance, collaborate with development teams, optimize non-production environments, contribute to product definition, and troubleshoot complex issues. Leadtech offers a flexible career path with personalized training, flexible work schedule options (including full remote), comprehensive benefits, and a unique office environment in Barcelona. We prioritize your growth and offer a supportive and inclusive workplace.

Requirements

• Minimum 6 years of experience in systems engineering, preferably in web systems with a leadership focus on operational matters
• Experience in the payments, banking, or FinTech industry, with a solid understanding of industry-specific challenges and requirements
• Knowledge of PCI DSS (Payment Card Industry Data Security Standard) compliance and best practices for securing payment systems
• Strong experience with Infrastructure as Code (IaC) tools, particularly Terraform
• Advanced expertise in Jenkins for pipeline creation and maintenance
• Extensive hands-on experience with AWS services: Lambda, CloudFront, API Gateway, S3
• Proficiency in scripting languages: Shell, Groovy, Python, and PowerShell
• Strong background in administering UNIX/Linux/BSD systems
• Solid understanding of Cloud Computing Services like EC2, Docker, and ECS
• Solid understanding of networking concepts: VPC, subnets, security groups, routing, load balancing, and firewalls in cloud environments
• Proven experience implementing and managing network security in AWS, including WAF, NACLs, and VPN configurations
• Strong knowledge of IAM roles and policies, as well as security best practices in cloud-native architectures
• Familiarity with security monitoring tools and processes, such as vulnerability scanning, intrusion detection systems (IDS), and threat mitigation strategies
• Hands-on experience in designing systems with a zero-trust architecture mindset
• Fluent in English (Spanish is a plus)

Responsibilities

• Define and drive end-to-end Agile DevOps software development lifecycle with automation at its core
• Establish and enforce software architecture patterns with a focus on high availability (HA), scalability, security, monitoring, and configuration of Amazon AWS services
• Provide architecture guidance and design patterns for PaaS and distributed systems development following the Twelve-Factor App methodology
• Collaborate with development teams by offering coaching and training to enhance automation, service modularity, code reusability, and implement best practices in testing, deployment, and change management processes
• Optimize non-production environments (development, testing, integration, and pre-production) to improve agility, efficiency, and team productivity
• Contribute to product definition by sharing technical vision and enabling progress towards Continuous Delivery
• Troubleshoot and resolve complex issues across development, testing, and production environments

Preferred Qualifications

• Knowledgeable about configuring and managing web servers (Nginx)
• Knowledgeable about monitoring tools: Grafana, Influxdb, etc
• Experience with MySQL/MariaDB, PostgreSQL, Oracle
• NoSQL Databases: Redis, ElasticSearch, DynamoDB and MongoDB

Benefits

• Growth and career development
• Flexible career path with personalized internal training and an annual budget for external learning opportunities
• Work-Life balance
• Flexible schedule with flextime (7 - 9:30 a.m. start, 3:30 - 6 p.m. end) and the option of working full remote or from our Barcelona office
• Free Friday afternoons with a 7-hour workday, plus a 35-hour workweek in July and August
• Competitive salary, full-time permanent contract, and top-tier private health insurance (including dental and psychological services)
• 25 days of vacation plus your birthday off, with flexible vacation options—no blackout days!
• Free coffee, fresh fruit, snacks, a game room, and a rooftop terrace with stunning Mediterranean views
• Ticket restaurant and nursery vouchers, paid directly from your gross salary