Mid Frontend Engineer Job at Flanks (Barcelona)

Mid Frontend Engineer

Our Tech department has been the driving force behind one of the most successful...

Location

Spain , Madrid

Salary:

Not provided

AUTO1 Group

Expiration Date

Until further notice

Requirements

3+ years of professional experience in javascript programming
Hands-on experience of at least 1 year with React.js/typescript-based projects
Production experience with complex javascript applications and asynchronous programming
Strong knowledge of web protocols and transports like HTTP and WebSockets
Proficient with HTML5, CSS3 and webpack

Job Responsibility

Architect, develop, QA, ship, monitor, and maintain some of our 130+ modules and dozens of applications each day
Use your experience, hands-on and can-do attitude to solve complex problems
Raise the bar and drive technological innovations to keep AUTO1 at the cutting-edge
Bring into life new innovative features in close collaboration with different product and development teams. You will have the chance to look into other technologies and other fields of software development
Inspire those around you to push boundaries and excel

What we offer

Educational budget for your personal growth
Your life-work balance and working from home are part of our culture, you can work from home up to 5 days a week or completely remotely in Spain
Discounts at AutoHero and other brands
More than 90 different nationalities make up for a truly international and diverse working environment

Fulltime

Mid-level Fullstack Engineer

We are looking for highly talented and driven software engineers who take pride ...

Location

United States , New York

Salary:

140000.00 USD / Year

AlphaSights

Expiration Date

Until further notice

Requirements

Degree in a STEM subject (or equivalent experience)
Experience working at a similar level in a mature Engineering team
Technical expertise with at least one popular backend language (ideally Java or Kotlin)
Experience with ElasticSearch
Familiarity with frontend frameworks such as React
Proven track record of demonstrable impact
Highly driven and proactive
Meticulous with high standards and obsessive attention to detail

Job Responsibility

Design solutions and contribute to architectural vision
Ship working code primarily with React, Kotlin microservices, Postgres, and Ruby on Rails
Deploy and iterate using CI/CD tools like CircleCI and Spinnaker
Build competency and use L&D budget for technical development
Maintenance and troubleshooting of services

What we offer

Potential for bonus

Fulltime

Mid-level Backend Engineer

We are looking for highly talented and driven software engineers who take pride ...

Location

United Kingdom , London

Salary:

Not provided

AlphaSights

Expiration Date

Until further notice

Requirements

Degree in a STEM subject (or alternative route)
3+ years of experience working at a similar level in a mature Engineering team
Technical expertise with Java or Kotlin
Experience with relational databases
Proven track record of demonstrable impact in previous roles
Highly driven and proactive
Meticulous with high standards and obsessive attention to detail

Job Responsibility

Design solutions and contribute to architectural vision
Ship working code primarily with React on frontend and Kotlin microservices with Postgres on backend
Deploy and iterate using CircleCI and Spinnaker for CI/CD
Build competency and learn quickly
Maintenance and troubleshooting of services

What we offer

L&D budget to fast-track development of specific technical competencies

Fulltime

Mid-level Backend Engineer

We are looking for highly talented and driven Backend Software Engineers who tak...

Location

Portugal

Salary:

Not provided

AlphaSights

Expiration Date

Until further notice

Requirements

Degree in a STEM subject (or equivalent experience)
3+ years of experience working at a similar level in a mature Engineering team
Technical expertise with at least one programming language (Kotlin, Ruby)
Experience with relational databases
Proven track record of demonstrable impact in previous roles
Highly driven and proactive
Meticulous with high standards and obsessive attention to detail

Job Responsibility

Design solutions to business problems and contribute to architectural vision
Ship working code (React frontend, Kotlin microservices with Postgres backend, some Ruby on Rails)
Deploy and iterate frequently
Build competency and use L&D budget for technical development
Maintenance and troubleshooting of services

Fulltime

Software Engineer III (Frontend)

We’re looking for a Frontend Software Engineer III to help build and evolve cust...

Location

Salary:

140000.00 USD / Year

Digital Media Solutions

Expiration Date

Until further notice

Requirements

5+ years of professional frontend engineering experience
Strong experience with React and/or Vue
Solid understanding of JavaScript fundamentals and modern ES standards
Experience working with server-rendered template systems (Twig or similar)
Strong experience with Bootstrap or similar CSS frameworks
Experience building production-grade UI systems at scale
Deep understanding of browser performance and debugging tools
Ability to own complex features independently
Experience using AI development tools to enhance productivity and testing workflows
Strong communication skills and product awareness

Job Responsibility

Design, build and maintain modern frontend applications using React
Maintain and improve Twig-rendered UI templates
Build and extend responsive UI components using Bootstrap
Collaborate with product, backend and design teams to deliver polished features
Own frontend architecture decisions within your domain
Improve application performance, accessibility and responsiveness
Utilize AI-assisted tools to accelerate implementation, refactoring and test creation
Participate in code reviews and mentor mid-level engineers
Contribute to shared component libraries and frontend standards
Support production systems and help resolve user-facing issues

What we offer

Medical, dental, vision insurance
Wellness and mental health benefits
Tax-Advantaged healthcare accounts
Financial and income protection benefits (life insurance, short-term disability, 401(k)
Paid time off (PTO), holidays and sick time off
Remote worker assistance for wellness and home office

Fulltime

Senior Software Engineer I, Frontend (Data and Reporting)

As a Senior Software Engineer - Frontend on our Data and Reporting team, you'll ...

Location

Poland , Krakow

Salary:

19500.00 - 24400.00 PLN / Month

MyTennisLessons

Expiration Date

Until further notice

Requirements

5+ years of professional frontend development experience
Willing to come into our Kraków or Gdańsk office 2-3 times per week
Strong proficiency in React, with experience building and maintaining complex component architectures
Demonstrated experience with data visualization libraries (D3, Recharts, Victory, Chart.js, or similar) and translating data into clear, actionable visuals
Track record of building responsive web applications that work well across devices
Experience working with RESTful APIs and integrating frontend applications with backend services
Solid understanding of modern frontend tooling, testing practices, and performance optimization
Strong communication skills and the ability to collaborate effectively with cross-functional teams
Comfort with ambiguity and the judgment to make good product decisions independently

Job Responsibility

Design and build responsive, accessible reporting dashboards and data visualizations that help merchants make better business decisions
Develop new report types and chart visualizations, expanding beyond tabular data into richer visual formats
Improve and maintain existing reporting features, balancing new development with ongoing refinement
Collaborate with product managers, designers, and engineers to define requirements and deliver polished experiences—and make sound UX decisions when design resources aren't available
Work with backend engineers to integrate with Python APIs that power merchant reporting
Conduct code reviews and establish frontend standards that elevate the quality of the codebase
Mentor junior and mid-level engineers on frontend best practices and component architecture

What we offer

Training budget 3500 PLN gross per year
Access to e-learning platforms (O’Reilly)
Fully paid private healthcare in LuxMed
Access to the Worksmile platform with a monthly top-up
Subsidized access to breakfast and lunch through the vending machine in Kraków office, and lunches in Gdańsk office once a week
Group English classes with a native speaker
New Macbook Pro, 4K monitors or whatever tools you need
Flexible working hours
New, modern, bright and comfortable office space in the city centre
A lot of free parking spots around the office

Fulltime

Mid-level Frontend Engineer

We are looking for highly talented and driven software engineers who take pride ...

Location

United Kingdom , London

Salary:

Not provided

AlphaSights

Expiration Date

Until further notice

Requirements

Degree in a STEM subject (or equivalent experience)
Experience working at a similar level in a mature Engineering team
Technical expertise with Frontend: at least one Frontend framework, ideally React
Proven track record of demonstrable impact in previous roles
Highly driven and proactive
Meticulous with high standards and obsessive attention to detail

Job Responsibility

Design solutions: Define the best technical solutions to business problems, contributing to an architectural vision
Ship working code: Work with React on the frontend and Kotlin microservices with Postgres on the backend
Deploy and iterate: Release frequently using CircleCI and Spinnaker for CI/CD
Build your competency: Learn quickly by building market-leading technology
Maintenance and troubleshooting: Monitor services, catch errors, diagnose root causes, and deploy fixes

What we offer

L&D budget to fast-track development of specific technical competencies

Fulltime

Frontend Engineer

yeet is built by a tight-knit group of systems, observability, and kernel nerds ...

Location

United States , Chicago

Salary:

Not provided

yeet

Expiration Date

Until further notice

Requirements

Built performance-critical frontends where smooth rendering and responsiveness weren't optional
Know when React helps and when to drop down to Canvas, WebGL, or raw DOM-manipulations for speed
Strong grasp of data structures and algorithms
Write expressive TypeScript and use the type system to catch bugs before they ship
Fluent in low-level web APIs (e.g. OPFS, OffscreenCanvas, Web Workers)
Motivated by measurable performance: frame budgets, memory profiles, flame-graphs

Job Responsibility

Push the limits of what's possible in the browser
Architect solutions with data pipelines, rendering loops, and memory constraints in mind for a canvas-based app that ingests and visualizes huge streams of data
Make decisions that directly impact how engineers experience yeet in the mid-incident

Fulltime

Mid Frontend Engineer

Flanks

Location:
Spain , Barcelona

Category:
IT - Software Development

Contract Type:
Employment contract

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:
January 05, 2026

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