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Second Window Tech Stack

Spanish IT services firm building data platforms and cloud migrations for financial institutions

IT Services and IT Consulting Madrid, Comunidad de Madrid 51–200 employees Founded 2010 Privately Held

Second Window is a Madrid-based services firm specializing in full-stack development, data engineering, and cloud infrastructure for enterprise clients—primarily banks and financial services. The stack reveals a Java/Node.js hybrid backend with Docker/Kubernetes orchestration and heavy AWS adoption; the active projects list is dominated by long-term financial engagements (banking, loan products, payment systems) and network automation, while pain points cluster around CI/CD optimization and AWS migration, suggesting a services practice in transition from on-premise to cloud-native delivery models.

Tech Stack 200 technologies

Core StackJavaScript Node.js MongoDB Java jQuery Angular Jenkins Docker GitHub OpenShift Maven Oracle Linux Apache Airflow AWS Jira Confluence SonarQube Python AWS Glue npm SQL NoSQL Nexus Git Spring Boot Subversion SSH SFTP AWS EMR+170 more

AdoptingAWS

What Second Window Is Building

◆Challenges

Optimizing ci/cd processes
Refactor legacy processes
Migrate processes to aws
Eliminate obsolescence
Challenging status quo
Ensuring executive support for agile
Ensuring continuous delivery
Maintaining infrastructure stability
Improving data management processes for loan products
Supporting legacy projects

▲Active Projects

International project
Long-term project for financial entity
Integrating graphql gateway for legacy projects
Long-term banking project
Santander uk project
Maintenance of financial instrument management systems and customs license certificates
Loan product data management improvement
Financial institution project
Network automation with palo alto, f5, check point in ansible collections
Maintenance and evolution of public sector applications

Hiring Activity

Minimal95 roles · 6 in 30d

Department

Engineering

80

Data

10

Security

4

Ops

2

Finance

1

Seniority

Mid

66

Senior

16

Junior

15

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About Second Window

Second Window develops custom technology solutions for mid-market and enterprise customers in finance, public sector, utilities, and telecom. Founded in 2010, the company operates as a digital transformation partner, offering services across full-stack development, data and AI analytics, cloud infrastructure, intelligent process automation, and cybersecurity. Based in Madrid with 51–200 employees, the organization is heavily weighted toward engineering (primarily mid-level developers), with smaller data and security teams supporting a portfolio of long-running client projects—particularly in banking and financial services—alongside modernization initiatives targeting AWS cloud migration and legacy system refactoring.

HeadquartersMadrid, Comunidad de Madrid

Company Size51–200 employees

Founded2010

Hiring MarketsSpain

Frequently Asked Questions

What is Second Window's tech stack?

Primary: JavaScript, Node.js, Java, MongoDB, SQL, and Oracle. DevOps: Docker, OpenShift, Jenkins, GitHub, Git. Data layer: Apache Airflow, AWS Glue, AWS EMR. Cloud: AWS (actively adopting). Analysis tools: Jira, Confluence, SonarQube.

What projects is Second Window working on?

Long-term engagements with financial institutions (banking projects, loan product data management, payment systems), network automation (Palo Alto, F5, Check Point), GraphQL gateway integration for legacy systems, and public sector application maintenance.