Senior Software Engineer

Skillwell; España; Remote; EUR 70,000 - 110,000; Full time

Job summary

Skillwell is seeking a Senior Software Engineer to shepherd technical excellence and evolutionary architecture for our platform. You will apply TDD/BDD, refactor for maintainability, and drive CI/CD improvements with Jenkins, GitLab, or Bitbucket.

Expect hands-on Java/Jakarta EE development, strong OOP/SOLID practices, and mentoring teammates through design reviews and knowledge sharing. AWS experience is a plus in our growing cloud environment.

Qualifications

• 7+ years of experience with Java/Jakarta EE, including modern versions (Java 17+).
• At least 2 years of professional TDD in production workflows.
• Deep CI/CD expertise using Jenkins, GitLab, Bitbucket or similar tools.
• Strong understanding of OOP, SOLID, and design patterns.
• Familiarity with Behavior Driven Development using Cucumber/JBehave/Serenity.
• Cloud infrastructure experience with AWS is advantageous.

Responsibilities

• Lead by example in development and architecture decisions.
• Promote evolutionary architecture and documentation.
• Mentor teammates through code reviews and pair programming.
• Collaborate with stakeholders to ensure quality and timely delivery.

Skills

Java/Jakarta EE

TDD

BDD

CI/CD

OO/ SOLID

Design Patterns

Cloud AWS

Agile leadership

Education

Bachelor's degree in Computer Science or equivalent

Tools

Jenkins

GitLab

Bitbucket

Cucumber

JBehave

Serenity

Job description

Skillwell helps the world’s leading companies measure and develop skills to drive business performance. Employees apply workplace skills in realistic scenarios while the simulation platform measures their strengths and gaps.

As a Senior Software Engineer, you won’t just "write code"; you will be a steward of technical excellence and evolutionary architecture, ensuring our platform remains adaptable to changing business needs:

Test-Driven Development & Refactoring : Embrace a rigorous Test-First approach to feature design and implementation. Proactively engage in continuous refactoring to ensure the codebase remains clean, highly maintainable, and free from technical debt.

Behavior Driven Development (BDD) : Partner with stakeholders to translate user stories into executable specifications using BDD frameworks, ensuring the "Definition of Done" meets both functional and quality standards.

Continuous Improvement & DevOps Culture : Beyond monitoring build health, you will actively seek ways to optimize our CI/CD pipelines to reduce lead time and improve deployment frequency.

Agile Mentorship & Leadership : Lead by example in pair programming and code reviews. Foster a culture of Kaizen (continuous improvement) by facilitating knowledge-sharing sessions on design patterns, SOLID principles, and emerging tech.

Evolutionary Architecture : Use the C4 model and UML to document our system, ensuring that architectural decisions are collaborative, transparent, and capable of evolving as the platform scales.

Requirements

Required:

Java Mastery : 7+ years of experience with Java/Jakarta EE, with deep expertise in modern versions (Java 17+).

Test-Driven Development : At least 2 years of professional experience where TDD was your primary development workflow, ensuring all production code is designed, written, and evolved through a test‑first approach. You should be comfortable explaining the benefits of "Red‑Green‑Refactor" and how it facilitates agile delivery.

Continuous Delivery : Deep expertise with Continuous Integration and Continuous delivery practices using Jenkins, Gitlab, Bitbucket or similar tools.

Design & Architecture : Expert-level understanding of OOP, SOLID, and Design Patterns to ensure code is decoupled and easy to change.

Collaborative Mindset : Familiarity with the core principles and concepts of Behavior Driven Development using tools like Cucumber, JBehave or Serenity.

Cloud Infrastructure : Experience with AWS in a commercial setting would be advantageous.

Skillwell is an equal opportunity employer. We will extend opportunities and benefits to employees without regard to race, religion, sex, national origin, age, disability, or veterans’ status. This policy confirms Skillwell commitment to fair employment.