Home › Companies › Klar › Senior Backend Engineer - EU
Senior Backend Engineer - EU
Klar · Remote · Active · BambooHR
Job facts
| Field | Value |
|---|---|
| Company | Klar |
| Title | Senior Backend Engineer - EU |
| Normalized title | - |
| Department / team | Growth & Marketing - Activation |
| Location | Wroclaw, Wroclaw, Poland |
| Work model | Remote / Remote |
| Employment type | Deel |
| Salary | - |
| Status | active |
| ATS provider | BambooHR |
| Posted / first seen | 2026-05-04 / 2026-05-30 |
| Changed / last seen | 2026-05-30 / 2026-06-06 |
Related slices
| Page | What it contains | Open |
|---|---|---|
| Company jobs | Active postings from Klar. | Open |
| Company breakdowns | Role, location, ATS, and work model facets for this company. | Open |
| ATS provider jobs | Active postings observed through BambooHR. | Open |
| Provider filtered search | The same provider as a filtered job collection. | Open |
| City jobs | Active postings in Wroclaw. | Open |
| Department jobs | Active postings in Growth & Marketing - Activation. | Open |
| Work model jobs | Active Remote postings. | Open |
| Lifecycle events | Open, update, close, and reopen events for this posting. | Open |
| Original posting | Canonical source or apply URL captured from the ATS. | Open |
Linked records
| Company | Klar |
| Source | 95fd11c5-513b-42e6-ab74-be4a2eb8eab2 |
| ATS provider | BambooHR |
Description
About KLAR
Let’s start with the basics! Klar is a Mexican fintech startup whose mission is to democratize and revolutionize the way in which financial services have been delivered so far in Mexico, especially since half of the population doesn’t have a bank account. We offer a rich set of products across our debit and credit offers and the future is bright for Klar! We have an exciting and ambitious roadmap to bring more features to our products so that we can better serve our users. We have served more than 2 million users since our launch in 2019!
We are also proud to have been certified as a “ Great Place to Work ” in Mexico - we’ve worked hard to make that happen and will continue to make bigger strides in the future! Sound like a place you’d like to be?
Our people
If you join us at Klar, you’ll be welcomed into a team which is rich in many talents and we are very proud! With our head office in Mexico City, and remote tech hubs in Berlin and Argentina, we are always learning something new about another culture or language. With so many people from different backgrounds and walks of life (parents, LGBTQ+, neurodivergence), you’ll definitely find your people here!
Our values
Ownership - We own our successes & our failures as a team.
Excellence - We do everything to the best of our ability & always seek to achieve a new level of excellence in our work.
Inclusion - We believe we are stronger together and actively work to promote a safe, diverse, inclusive, and respectful culture.
Customer Obsession - We understand the value Klar can bring to its customers & it’s always at the forefront of our decisions.
Klarity - We communicate clearly & with authenticity. It’s in our name & it’s what we do.
About the Role
We’re looking for a Senior Backend Engineer to join one of our core teams at Klar, where you’ll help build the systems powering the future of digital banking.
This is a full-time, remote role , ideally suited for candidates based in the EU or able to collaborate within EU time zones. You’ll be working on scalable, high-impact backend services that are central to our platform. From designing robust architectures to improving system performance, your work will directly contribute to making digital banking more efficient and accessible.
What you can expect:
Write correct, efficient, clean, robust, and maintainable code (Mostly in Java 21+)
Write unit, integration, and end-to-end tests to prevent current errors or future regressions
Participate in code review to learn from others and to teach them as well
Prototype new technologies and libraries that could save time and effort
Write clear and concise documentation for users of your systems
Identify common problems between multiple systems and develop common solutions via libraries
Create designs for new systems and features of moderate complexity
Make time estimates to implement designs that can aid in future planning
Work on core systems with real business impact
Collaborate with a highly skilled, international team
Take ownership of meaningful technical challenges
Contribute to a product that’s transforming financial services
Mentor junior engineers
What we are looking for:
You are a senior engineer with experience in architecture, design, implementation and deployment of business critical systems.
AI Coding Tools: Proven proficiency in leveraging modern AI development workflows to accelerate delivery and maintain code quality. You should be a 'power user' of tools such as Claude Code, GitHub Copilot (Agent Mode) or Cursor.
Modern Java: Deep expertise in Java (21+) and the Spring Boot ecosystem.
You are passionate about simplifying complex problems with innovative solutions which increases efficiency and saves cost.
Experience with PostgreSQL or other relational databases, Apache Kafka, Docker
At least 5 years of experience with microservice architectures, synchronous REST communication over HTTP, and asynchronous communication over Apache Kafka
Deep understanding of database transactions and locking mechanisms.
Knowledge of algorithms and data structure for distributing loads like sharding, leadership election, and more.
Preferred Qualifications:
2 years of experience with logging and metrics technologies: Prometheus, Grafana, Kibana
1 year of experience with the following infrastructure technologies: AWS, Github Actions, Kubernetes, Istio, Terraform, Terragrunt
Experience with the Fintech domain or high paced startup.
Our offer to you
Competitive salary based on performance and experience
Chance of earning Klar stock options
26 days of paid vacation per year
Computer device
International work environment with amazing and highly skilled people
A world class team that helps you evolve your skills in areas you're interested in
Wellhub subscription to offer mental and physical health
Klar is a safe place for everyone!
We trust our highly skilled and diverse team and we’re committed to creating a welcoming and inclusive environment for new talents to flourish. We value diversity and welcome all applications regardless of gender, nationality, ethnic and social origin, religion/belief, physical abilities, age, sexual orientation and identity.
Should you require any accommodations through the recruitment process, please don’t hesitate to let us know how we can help!
Full job record
| Job ID | 19f68fe5d47072555cb7c52a3b0abb5a4f79addb |
| Org ID | b14e6e10-58ac-4b71-acd8-af50b859c847 |
| Source ID | 95fd11c5-513b-42e6-ab74-be4a2eb8eab2 |
| Board ID | 95fd11c5-513b-42e6-ab74-be4a2eb8eab2 |
| Provider | bamboohr |
| Provider Job Key | 355 |
| Title | Senior Backend Engineer - EU |
| Normalized Title | — |
| Status | active |
| Active | yes |
| Location Text | — |
| Department | Growth & Marketing - Activation |
| Team | — |
| Employment Type | Deel |
| Workplace Type | remote |
| Remote Policy | remote |
| Country | Poland |
| Region | Wroclaw |
| City | Wroclaw |
| Salary Raw | — |
| Salary Min | — |
| Salary Max | — |
| Salary Currency | — |
| Salary Period | — |
| Source URL | https://klar.bamboohr.com/careers/355 |
| Apply URL | https://klar.bamboohr.com/careers/355 |
| First Seen At | 2026-05-30 05:58:17Z |
| Last Seen At | 2026-06-06 10:22:30Z |
| Last Checked At | 2026-06-06 10:22:30Z |
| Last Changed At | 2026-05-30 05:58:17Z |
| Inactive At | — |
| Source Posted At | 2026-05-04 00:00:00Z |
| Source Updated At | — |
| Raw Payload Uri | s3://job-postings-prod-raw-590183727216/raw/provider=bamboohr/board=klar/date=2026-06-06/2026-06-06T10-22-27-472Z-4a60beb1a4dbc7909ae3b2ef90985a7d3561a3a239149782ae6b717f948969f9.json |
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"description": "<p><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt\"><span style=\"font-size: 14pt; font-weight: bold\"><span style=\"color: rgb(72, 65, 63)\">About KLAR</span></span><span style=\"font-weight: bold\"><br></span></span></p>\n<p><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\">Let’s start with the basics! Klar is a Mexican fintech startup whose mission is to democratize and revolutionize the way in which financial services have been delivered so far in Mexico, especially since half of the population doesn’t have a bank account. We offer a rich set of products across our debit and credit offers and the future is bright for Klar! We have an exciting and ambitious roadmap to bring more features to our products so that we can better serve our users. We have served more than 2 million users since our launch in 2019! </span></p>\n<p><br></p>\n<p><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt\"><span style=\"color: rgb(72, 65, 63)\">We are also proud to have been certified as a “</span><span style=\"font-weight: bold\"><span style=\"color: rgb(72, 65, 63)\">Great Place to Work</span></span><span style=\"color: rgb(72, 65, 63)\">” in Mexico - we’ve worked hard to make that happen and will continue to make bigger strides in the future! Sound like a place you’d like to be?</span></span></p>\n<p><br></p>\n<p><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt\"><span style=\"font-size: 14pt; font-weight: bold\"><span style=\"color: rgb(72, 65, 63)\">Our people</span></span><span style=\"font-weight: bold\"><br></span></span></p>\n<p><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\">If you join us at Klar, you’ll be welcomed into a team which is rich in many talents and we are very proud! With our head office in Mexico City, and remote tech hubs in Berlin and Argentina, we are always learning something new about another culture or language. With so many people from different backgrounds and walks of life (parents, LGBTQ+, neurodivergence), you’ll definitely find your people here! </span></p>\n<p><br></p>\n<p><span style=\"font-family: arial, helvetica, sans-serif; font-size: 14pt; font-weight: bold\"><span style=\"color: rgb(72, 65, 63)\">Our values </span></span></p>\n<ul>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\"><span style=\"font-weight: bold\">Ownership </span>- We own our successes & our failures as a team.</span></li>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\"><span style=\"font-weight: bold\">Excellence</span> - We do everything to the best of our ability & always seek to achieve a new level of excellence in our work.</span></li>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\"><span style=\"font-weight: bold\">Inclusion</span> - We believe we are stronger together and actively work to promote a safe, diverse, inclusive, and respectful culture.</span></li>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\"><span style=\"font-weight: bold\">Customer Obsession</span> - We understand the value Klar can bring to its customers & it’s always at the forefront of our decisions.</span></li>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\"><span style=\"font-weight: bold\">Klarity</span> - We communicate clearly & with authenticity. It’s in our name & it’s what we do.</span></li>\n</ul>\n<p><br></p>\n<p><span style=\"font-family: arial, helvetica, sans-serif; font-size: 14pt; font-weight: bold\">About the Role</span></p>\n<p><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt\">We’re looking for a <span style=\"font-weight: bold\">Senior Backend Engineer</span> to join one of our core teams at Klar, where you’ll help build the systems powering the future of digital banking.</span></p>\n<p><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt\">This is a <span style=\"font-weight: bold\">full-time, remote role</span>, ideally suited for candidates based in the EU or able to collaborate within EU time zones. You’ll be working on <span style=\"font-weight: bold\">scalable, high-impact backend services</span> that are central to our platform. From designing robust architectures to improving system performance, your work will directly contribute to making digital banking more efficient and accessible.</span></p>\n<p><br></p>\n<p><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 14pt; font-weight: bold\">What you can expect: </span></p>\n<ul>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\">Write correct, efficient, clean, robust, and maintainable code (Mostly in Java 21+) </span></li>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\">Write unit, integration, and end-to-end tests to prevent current errors or future regressions </span></li>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\">Participate in code review to learn from others and to teach them as well </span></li>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\">Prototype new technologies and libraries that could save time and effort </span></li>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\">Write clear and concise documentation for users of your systems </span></li>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\">Identify common problems between multiple systems and develop common solutions via libraries </span></li>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\">Create designs for new systems and features of moderate complexity </span></li>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\">Make time estimates to implement designs that can aid in future planning </span></li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt\">Work on core systems with real business impact</span></li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt\">Collaborate with a highly skilled, international team</span></li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt\">Take ownership of meaningful technical challenges</span></li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt\">Contribute to a product that’s transforming financial services<br></span></li>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\">Mentor junior engineers </span></li>\n</ul>\n<p><br></p>\n<p><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 14pt; font-weight: bold\">What we are looking for:</span></p>\n<ul>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\">You are a senior engineer with experience in architecture, design, implementation and deployment of business critical systems. </span></li>\n<li><span style=\"color: rgb(29, 28, 29); font-family: arial, helvetica, sans-serif; font-size: 12pt\">AI Coding Tools: Proven proficiency in leveraging modern AI development workflows to accelerate delivery and maintain code quality. You should be a 'power user' of tools such as Claude Code, GitHub Copilot (Agent Mode) or Cursor.</span></li>\n<li><span style=\"color: rgb(29, 28, 29); font-family: arial, helvetica, sans-serif; font-size: 12pt\">Modern Java: Deep expertise in Java (21+) and the Spring Boot ecosystem.</span></li>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\">You are passionate about simplifying complex problems with innovative solutions which increases efficiency and saves cost. </span></li>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\">Experience with PostgreSQL or other relational databases, Apache Kafka, Docker</span></li>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\">At least 5 years of experience with microservice architectures, synchronous REST communication over HTTP, and asynchronous communication over Apache Kafka</span></li>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\">Deep understanding of database transactions and locking mechanisms.</span></li>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\">Knowledge of algorithms and data structure for distributing loads like sharding, leadership election, and more. </span></li>\n</ul>\n<p><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 14pt; font-weight: bold\">Preferred Qualifications: </span></p>\n<ul>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\">2 years of experience with logging and metrics technologies: Prometheus, Grafana, Kibana </span></li>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\">1 year of experience with the following infrastructure technologies: AWS, Github Actions, Kubernetes, Istio, Terraform, Terragrunt</span></li>\n<li><span style=\"color: rgb(72, 65, 63); font-family: arial, helvetica, sans-serif; font-size: 12pt\">Experience with the Fintech domain or high paced startup.</span></li>\n</ul>\n<p><br></p>\n<p><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt\"><span style=\"font-size: 14pt; font-weight: bold\"><span style=\"color: rgb(72, 65, 63)\">Our offer to you</span></span><br></span></p>\n<ul>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt\">Competitive salary based on performance and experience</span></li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt\">Chance of earning Klar stock options</span></li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt\">26 days of paid vacation per year</span></li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt\">Computer device </span></li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt\">International work environment with amazing and highly skilled people</span></li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt\">A world class team that helps you evolve your skills in areas you're interested in</span></li>\n<li><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt\">Wellhub subscription to offer mental and physical health</span></li>\n</ul>\n<p><br></p>\n<p><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt; font-weight: bold\"><em><span style=\"color: rgb(72, 65, 63)\">Klar is a safe place for everyone!</span></em></span></p>\n<p><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt\"><em><span style=\"color: rgb(72, 65, 63)\">We trust our highly skilled and diverse team and we’re committed to creating a welcoming and inclusive environment for new talents to flourish. 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