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Senior Software Engineer, iOS

theknotworldwideBarcelona, Catalonia, Spain


No Relocation

Posted: February 17, 2026

Job Description

ABOUT THE ROLE AND OUR TEAM:

The Knot Worldwide is seeking an experienced Senior Software Engineer to join the TKWW Couple Marketplace team.  This Senior Software Engineer will play an important role in evolving our Marketplace within our The Knot Wedding Planner iOS app, including evaluating and building new features in conjunction with Product and Design partners, improving app reliability, fixing bugs, and communicating the status of tickets and fixes to various stakeholders, helping to ensure the experience presented to our users is the very best it can be!

The Senior Software Engineer will work cross-functionally alongside Product and Design to ideate and build best-in-class apps that support the company's goals.  Our product and engineering teams work closely together at every phase of product development from research and inception to release and maintenance. 

The Knot Worldwide is the leading wedding marketplace in over 16 countries, providing couples with a personalized experience that guides them through the entire wedding planning journey, and connecting them with local small businesses who can help them fulfill their wedding vision.

RESPONSIBILITIES: 

  • Leverage skills and experience to implement app features that are well architected, tested, and understandable.
  • Actively participate in the ideation and execution of product roadmap, architecture discussions, and Agile planning.
  • Work closely with product and design partners to deliver value to users and business partners.
  • Collaborate in cross-team initiatives.
  • Actively participate and lead cross-team technical discussions and decision making.
  • Produce well-tested, extensible code that serves up to 5M+ requests per day.
  • Follow best practices surrounding testing, continuous integration, code standards, etc.
  • Develop test strategies and write unit/functional tests to ensure that we can move quickly and maintain a great user experience while doing so.
  • Ensure technical KPIs around application maintenance, performance and resiliency are met.
  • Provide mentorship to more junior members of the team.

SUCCESSFUL SENIOR SOFTWARE ENGINEER CANDIDATES HAVE:

  • 5+ years overall engineering experience. 
  • 3+ years hands-on proven track record implementing iOS applications in Swift.
  • 1+ years of experience using SwiftUI.
  • Ability to work with project teams located in multiple geographic locations.  
  • Experience working in an Agile environment. 
  • Excellent communication skills, both oral and written.
  • High Proficiency in consuming RESTful APIs or API Communications (Graphql) within applications
  • Good Grasp of Asynchronous Programming.
  • Working Knowledge of API-based User Authentication and Authorization (such as JWT).
  • Experience debugging and correcting problems in both development and production, (Experience with tools such as Firebase is a plus).
  • Ability to translate business requirements into technical actions, and ensure that business value delivery is optimized without compromising technical quality.

BENEFITS:

  • Private health insurance
  • Life insurance
  • Employee assistance program: on-demand mental health assistance program for any professional or personal matter
  • Optional salary advances
  • Tax relief options: pre-tax savings for food, transport, daycare and work related training expenses
  • Gym membership discount
  • Udemy courses
  • Personal time off: 23 working days of holidays per year + additional days each year considering the application of the max. anual working hours of the Collective Bargaining Agreement
  • Other leave entitlements: enhancements to statutory leave permissions, for instance: maternity, paternity, childcare, illness and others to support work-life balance
  • Work from home allowance (40€/month)
  • Food allowance (55€/month)
  • Employee gifting
  • Signature events
  • Employee resource groups
  • DEI & Sustainability councils
  • Robust communication and feedback channels
  • Focused Fridays
  • Recognition iniciatives
  • Local events
  • GROW program
  • TKWW University for Employee & Leader development
  • Employee referral program

WORK MODEL:

This role is Together@TKWW-eligible and based near one of our office hubs. You’ll be expected to work in the office two days a week as part of our hybrid work model.

This role includes on-call rotations to ensure the stability of our systems. Specific schedules and compensation will be discussed during the interview process

#LI-Remote OR #LI-Hybrid, #LI-Onsite

#support OR #professional OR #management OR #executive

Additional Content

ABOUT THE ROLE AND OUR TEAM:

The Knot Worldwide is seeking an experienced Senior Software Engineer to join the TKWW Couple Marketplace team.  This Senior Software Engineer will play an important role in evolving our Marketplace within our The Knot Wedding Planner iOS app, including evaluating and building new features in conjunction with Product and Design partners, improving app reliability, fixing bugs, and communicating the status of tickets and fixes to various stakeholders, helping to ensure the experience presented to our users is the very best it can be!

The Senior Software Engineer will work cross-functionally alongside Product and Design to ideate and build best-in-class apps that support the company's goals.  Our product and engineering teams work closely together at every phase of product development from research and inception to release and maintenance. 

The Knot Worldwide is the leading wedding marketplace in over 16 countries, providing couples with a personalized experience that guides them through the entire wedding planning journey, and connecting them with local small businesses who can help them fulfill their wedding vision.

RESPONSIBILITIES: 

  • Leverage skills and experience to implement app features that are well architected, tested, and understandable.
  • Actively participate in the ideation and execution of product roadmap, architecture discussions, and Agile planning.
  • Work closely with product and design partners to deliver value to users and business partners.
  • Collaborate in cross-team initiatives.
  • Actively participate and lead cross-team technical discussions and decision making.
  • Produce well-tested, extensible code that serves up to 5M+ requests per day.
  • Follow best practices surrounding testing, continuous integration, code standards, etc.
  • Develop test strategies and write unit/functional tests to ensure that we can move quickly and maintain a great user experience while doing so.
  • Ensure technical KPIs around application maintenance, performance and resiliency are met.
  • Provide mentorship to more junior members of the team.

SUCCESSFUL SENIOR SOFTWARE ENGINEER CANDIDATES HAVE:

  • 5+ years overall engineering experience. 
  • 3+ years hands-on proven track record implementing iOS applications in Swift.
  • 1+ years of experience using SwiftUI.
  • Ability to work with project teams located in multiple geographic locations.  
  • Experience working in an Agile environment. 
  • Excellent communication skills, both oral and written.
  • High Proficiency in consuming RESTful APIs or API Communications (Graphql) within applications
  • Good Grasp of Asynchronous Programming.
  • Working Knowledge of API-based User Authentication and Authorization (such as JWT).
  • Experience debugging and correcting problems in both development and production, (Experience with tools such as Firebase is a plus).
  • Ability to translate business requirements into technical actions, and ensure that business value delivery is optimized without compromising technical quality.

BENEFITS:

  • Private health insurance
  • Life insurance
  • Employee assistance program: on-demand mental health assistance program for any professional or personal matter
  • Optional salary advances
  • Tax relief options: pre-tax savings for food, transport, daycare and work related training expenses
  • Gym membership discount
  • Udemy courses
  • Personal time off: 23 working days of holidays per year + additional days each year considering the application of the max. anual working hours of the Collective Bargaining Agreement
  • Other leave entitlements: enhancements to statutory leave permissions, for instance: maternity, paternity, childcare, illness and others to support work-life balance
  • Work from home allowance (40€/month)
  • Food allowance (55€/month)
  • Employee gifting
  • Signature events
  • Employee resource groups
  • DEI & Sustainability councils
  • Robust communication and feedback channels
  • Focused Fridays
  • Recognition iniciatives
  • Local events
  • GROW program
  • TKWW University for Employee & Leader development
  • Employee referral program

WORK MODEL:

This role is Together@TKWW-eligible and based near one of our office hubs. You’ll be expected to work in the office two days a week as part of our hybrid work model.

This role includes on-call rotations to ensure the stability of our systems. Specific schedules and compensation will be discussed during the interview process

#LI-Remote OR #LI-Hybrid, #LI-Onsite

#support OR #professional OR #management OR #executive