Basic
Senior Software Engineer, Frontend
Posted: 18.05.2026
Closing date: 02.07.2026
Job reference: 82f0a5dcbaf2aab76cde5a84c5640375
Job information
Location
Lisboa, Lisbon Metropolitan Area, Portugal
Company
Jobio
Client / Employer
Squarespace
Job reference
82f0a5dcbaf2aab76cde5a84c5640375
Listing type
Basic
EU work permit required
No
Posted
18.05.2026
Closing date
02.07.2026
Job description
The Acuity Scheduling team is looking for experienced Frontend Engineers who have design experience and are motivated by the desire to create interfaces that are a pleasure to use.Acuity Scheduling is a distinct brand and platform within the Squarespace suite of products whose mission is to help appointment-based businesses start and grow their service by allowing clients to directly schedule appointments, removing administrative burden, and giving our users more time to focus on what they love doing.We are looking for a Frontend Engineer who is eager to apply their technical skills and is passionate about solving complex web challenges. You will play an active and important role collaborating alongside other engineers and designers to provide customer-focused experiences, with a focus on developing features and creating fulfilling user experiences.This is a hybrid role working from our Aveiro office 3 days per week. You will report to the Software Engineering Manager.You'll Get To...Develop new features into the Squarespace interfaceTake a lead role with other engineers and designers to provide customer-focused experiencesKeep our product updated with the latest frontend technologies such as React and ES2016+Practice disciplined software engineering (e.g. automated testing, code reviews, and writing beautiful, readable code)Contribute to team and company standardsMentor junior team membersWho We're Looking ForJavaScript development skills, understanding of new ES6 concepts, and proficiency in React, Angular, or other modern JS frameworksExperience developing large-scale application softwareHave full knowledge of the DOM, new HTML5 constructs, and CSS3Have experience with Single Page Application developmentKeep up-to-date with the newest technologiesDevelop features and create fulfilling user experiencesAn understanding of, and practical experience with, web application developmentA sincere commitment to creating readable and dependable codeBS in Computer Science or related or equivalent industry experience5+ years of experienceBenefits & PerksHealth insurance with 100% covered premiums for you, your spouse or partner, and dependent children, including medical, dental, and visionLife and Disability InsurancePension benefits with employer matchFertility and adoption benefitsHeadspace mindfulness app subscriptionGlobal Employee Assistance ProgramStatutory paid time off and all statutory leaves, as requiredMeal Allowance and Flex Benefits AccountEmployee donation match to community organisationsIn the easily accessible city centre of Aveiro8 Global Employee Resource Groups (ERGs)About SquarespaceSquarespace is a design-driven platform helping entrepreneurs build brands and businesses online. We empower millions of customers in more than 200 countries and territories with all the tools they need to create an online presence, build an audience, monetize, and scale their business. Our suite of products range from websites, domains, ecommerce, and marketing tools, as well as tools for scheduling with Acuity and creating and managing social media presence with Bio Sites and Unfold. Our team of more than 1,500 is headquartered in bustling New York City, with offices in Dublin, Ireland, Aveiro, Portugal, and coworking spaces in the UK, Netherlands, and Australia. For more information about our company culture, visit https://www.squarespace.com/about/careers.Our CommitmentToday, more than a million people around the globe use Squarespace to share different perspectives and experiences with the world. Not only do we embrace and celebrate the diversity of our customers, but we also work toward the same in our employees. At Squarespace, we are committed to equal employment opportunity regardless of race, color, ethnicity, ancestry, religion, national origin, gender, sex, gender identity or expression, sexual orientation, age, citizenship, marital or parental status, disability, veteran status, or other class protected by applicable law. We are proud to be an equal opportunity workplace.Thank you in advance for providing the following details about your work history from your resume! This helps us ensure that your candidate information is accurate and consistent during the hiring process. Squarespace will never solicit your personal banking information or ask you to transfer money in connection with a job offer or interview. We also will not reach out to you via phone or SMS without your permission or knowledge.
Skills
ABAP
adapt to changes in technological development plans
AJAX
Ajax Framework
analyse software specifications
Ansible
Apache Maven
Apache Tomcat
APL
ASP.NET
Assembly (computer programming)
blockchain openness
blockchain platforms
C
COBOL
CoffeeScript
collect customer feedback on applications
Common Lisp
computer programming
create flowchart diagram
cyber attack counter-measures
data visualisation software
debug software
defence standard procedures
define technical requirements
design user interface
develop automated migration methods
develop creative ideas
develop software prototype
do cloud refactoring
Drupal
Eclipse (integrated development environment software)
engineering principles
engineering processes
Erlang
Git
Groovy
Haskell
IBM WebSphere
ICT debugging tools
ICT security legislation
identify customer requirements
integrate system components
integrated development environment software
Internet of Things
interpret technical requirements
Java (computer programming)
JavaScript
JavaScript Framework
Jenkins (tools for software configuration management)
KDevelop
Laravel
Lisp
manage engineering project
Matlab
Microsoft Visual C++
migrate existing data
ML (computer programming)
MySQL
NoSQL
object-oriented modelling
Objective-C
OpenEdge Advanced Business Language
Oracle Application Development Framework
Pascal (computer programming)
perform scientific research
Perl
PHP
Project Management
Prolog (computer programming)
Puppet (tools for software configuration management)
Python (computer programming)
R
Ruby (computer programming)
Salt (tools for software configuration management)
SAP R3
SAS language
Scala
Scratch (computer programming)
screen reader
Smalltalk (computer programming)
smart contract
software anomalies
software frameworks
Spark
SQL
STAF
Swift (computer programming)
technical drawings
tools for software configuration management
Trading Software
TypeScript
use an application-specific interface
use automatic programming
use concurrent programming
use functional programming
use logic programming
use object-oriented programming
use query languages
use software design patterns
use software libraries
use technical drawing software
utilise computer-aided software engineering tools
utilise machine learning
VBScript
Visual Basic
Web Services
WordPress
World Wide Web Consortium standards
Xcode