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Senior Backend Java Developer

Remote from Spain·Added yesterday

Kairos DS

32 open roles

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Overview

Job details

Fully remote
Per the ad.

Requirements

Have the right to work in Spain
Kairos DS doesn't mention sponsorship in the ad.
Work in English
English is required, per the ad.
Have 10+ years of experience
Senior-level role.

Benefits

Private health insurance
Per the ad: paid by the employer, or taken through flexible pay.
Flexible pay plan
Take part of your salary as tax-free benefits, per the ad.

This job was automatically translated to English.

Requirements

What we're looking for

At least 10 years of demonstrable experience as a Backend Developer or Fullstack Developer.
Critical mastery of Microservices and backend development with Java.
Key experience in Event Driven Architectures and handling Kafka - Confluent.
Solid knowledge and Testing practices (unit, integration, and regression) as a fundamental pillar of quality.
Proven experience in Agile methodologies (SCRUM, Kanban).
Demonstrated experience leading large-scale technical projects with autonomy and minimal supervision.
Mastery of integration platforms such as Oracle Service Bus (OSB) or similar.
Fluent handling of CI/CD tools (Jenkins, Git, Bitbucket) and proficiency in Unix/Linux environments with shell scripting.
High level of verbal and written communication in English to collaborate with international teams.
Ability to convey and simplify complex technical concepts to varied profiles.
Minimum B2 level of English

Nice to have

Experience in full-stack development with additional modern programming languages (e.g., C/C++, Objective-C, Python).
Familiarity with DevOps practices and Infrastructure as Code (IaC).
High capacity for adaptive learning to quickly integrate new technologies, frameworks, and architectural patterns.

We are looking for someone who...

Feels comfortable working in a dynamic environment where priorities can change.
Has organizational capacity and knows how to manage deadlines without compromising quality.
Enjoys both strategic work and practical execution.
Be curious and stay up to date with technological and communication trends.
Value transparency, clear communication, and teamwork.

Pay & benefits

What you'll get

Continuous corporate training.
Free English classes in small groups.
Constant personal mentoring and support.
Participation in conferences, events, and technology communities.
Flexible compensation (Cobee) for restaurant, transportation, training, and childcare.
Health insurance with Cigna, Adeslas, or Sanitas.
Wellness program for emotional and psychological well-being.

The role

What you'll do

We are looking for a Senior Backend Developer to work on large-scale projects, driving microservices-based and event-driven architectures.

You will work with a high degree of autonomy, simplifying complex concepts and ensuring maximum quality through solid testing practices in agile environments.

Microservices Architecture: You will design and build robust, scalable, and highly critical backend systems based on Java and Microservices.
Event-Driven Architectures: You will implement decoupled distributed solutions by leveraging Event Driven Architectures with Kafka (Confluent).
Testing and Quality Strategy: You will ensure the stability and integrity of developments by applying rigorous Testing methodologies (unit, integration, and regression).
Agile and Collaborative Environment: You will participate actively in team dynamics working under Agile methodologies such as SCRUM or Kanban.
Technical Leadership: You will lead large-scale technical projects with minimal supervision, guiding the team in technical decision-making.
Systems Integration: You will connect complex ecosystems working with integration platforms such as Oracle Service Bus (OSB) or similar.
DevOps and CI/CD Culture: You will deploy and manage software in Unix/Linux environments (via shell scripting), automating deliveries through CI/CD pipelines with Jenkins, Git, and Bitbucket.
Communication and Simplification: You will explain and simplify complex technical concepts to diverse audiences, acting as a key connector between technology and business.

How you'll work

23 vacation days + December 24th and 31st off.
1 day for professional events and 3 days for personal errands (free conciliation days).
100% remote work: You will work remotely, with some flexibility to adjust your schedule, although it will depend on the project you are on.

About Kairos DS

Kairos DS is a software consultancy based in Madrid, Spain, specializing in digital transformation, cloud services, and data-driven solutions. The company works with clients across various industries to design and implement custom software, data analytics, and AI solutions, with a strong focus on engineering excellence and agile methodologies. With a team of over 100 professionals, Kairos DS has established itself as a trusted partner for companies looking to modernize their technology stacks and leverage data for business growth.

Kairos DS has a strong presence in Madrid, where its main office is located, and operates primarily in the Spanish market. The company values a collaborative and innovative work culture, with a strong emphasis on continuous learning and professional development. For international professionals, Kairos DS offers opportunities to work on challenging projects in a dynamic environment, with roles spanning from backend and fullstack development to data science and site reliability engineering. The company's commitment to agile practices and modern technologies makes it an attractive option for those looking to advance their careers in Spain.

Industry: Software Consultancy
Founded: 2015
Employees: 51–200
Headquarters: Madrid, Spain
In Spain: Madrid
Website: kairosds.com

Good to know if you are moving

Kairos DS is headquartered in Madrid, offering a central location in Spain's capital with a vibrant tech scene.
The company works with modern technologies like Java, Go, Python, and Vue, providing opportunities to work on diverse projects.
Kairos DS emphasizes agile methodologies and continuous learning, with roles like Agile Coach and Tech Lead available.
The company has a strong focus on data and AI, with multiple data scientist and AI architect positions open.
International candidates can expect a collaborative environment with a mix of Spanish and English-speaking teams.

In their own words

About the company & team

We are Kairós, a different kind of technology company. Yes, we help our clients with their digital and methodological transformation challenges, but what truly defines us is how we do it: putting people at the center.

We have been recognized as a Great Place To Work company since 2019, ranking 5th in 2024 for the sixth consecutive year. Our values of courage, empathy, innovation, and joy are how we work every day. We are more than 850 people (developers, data engineers, strategists...) and now we are looking for someone to join this brilliant and diverse team.

At Kairós, you are not just a number. We know you by name, we care about your work-life balance, and we want you to grow with us.

Additional information

At Kairós, we firmly believe in the importance of equality and diversity in the workplace. We are committed to creating an inclusive and respectful environment where all employees feel valued and have the opportunity to reach their full potential, regardless of their race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or any other characteristic protected by law.

Apply to the job offer and join the Kairós team!

All open roles at Kairos DS