CrawlJobs Logo

Senior Software Engineer, WebExtensions

mozilla.org Logo

Mozilla

Location Icon

Location:

Category Icon
Category:
IT - Software Development

Job Type Icon

Contract Type:
Employment contract

Salary Icon

Salary:

Not provided
Save Job
Save Icon
Apply Position

Job Description:

The WebExtensions platform powers the add-ons ecosystem in Firefox, enabling millions of users to customize their browser while keeping safety and performance at the forefront. As a WebExtensions Engineer, you will help implement new extension capabilities, improve existing APIs, and ensure that extensions remain reliable across Firefox.

Job Responsibility:

  • Implement and maintain WebExtensions APIs and Addon Management, balancing power, safety, and performance, as well as user interfaces in Firefox
  • Debug and fix issues affecting extensions in Firefox
  • Collaborate with product managers, QA, and the AMO engineering team to deliver features end-to-end
  • Contribute to Mozilla-owned extensions and system add-ons
  • Participate in open source workflows: code reviews, pull requests, and discussions in Bugzilla/GitHub
  • Support extension developers by helping diagnose issues and improving tooling/documentation.

Requirements:

  • 4+ years of professional experience in software development
  • Strong proficiency in JavaScript, DOM APIs, HTML, and CSS
  • Familiarity with modern browser architecture and debugging tools
  • Experience with API design and integration
  • Ability to navigate and learn from large codebases
  • Strong communication skills and experience collaborating in distributed teams.

Nice to have:

  • Experience with Firefox internals, C++ or Rust
  • Familiarity with Android or GeckoView development
  • Knowledge of web security principles
  • Contributions to open source projects, especially in browser or extension development.
What we offer:
  • Generous performance-based bonus plans
  • Rich medical, dental, and vision coverage
  • Generous retirement contributions with 100% immediate vesting
  • Quarterly all-company wellness days
  • Country specific holidays plus a day off for your birthday
  • One-time home office stipend
  • Annual professional development budget
  • Quarterly well-being stipend
  • Considerable paid parental leave
  • Employee referral bonus program
  • Other benefits (life/AD&D, disability, EAP, etc. - varies by country).

Additional Information:

Job Posted:
May 14, 2026

Employment Type:
Fulltime
Work Type:
Remote work
Icon
Mozilla - All Job Offers
Job Link Share:
Copy Link Icon
Facebook Icon Twitter Icon LinkedIn Icon

Looking for more opportunities? Search for other job offers that match your skills and interests.

Briefcase Icon

Similar Jobs for Senior Software Engineer, WebExtensions

New

Branch Operations Manager

Wells Fargo is seeking a Branch Operations Associate Manager (LO) for our Nation...
Location
Location
United States , Springtown
Salary
Salary:
23.00 - 33.50 USD / Hour
https://www.wellsfargo.com/ Logo
Wells Fargo
Expiration Date
May 21, 2026
Flip Icon
Requirements
Requirements
  • 2+ years of experience assessing and meeting the needs of customers or helping with issue resolution, or equivalent demonstrated through one or a combination of the following: work experience, training, military experience, education
  • 1+ years of Leadership experience
Job Responsibility
Job Responsibility
  • Lead and supervise risk and the operations of teller functions to deliver exceptional customer service and colleague experience, and ensure timely completion, quality, and compliance in teller functions
  • Provide feedback and present ideas for improving customer service and colleague experience, and related performance management process and tools
  • Perform operational and customer support tasks
  • Provide excellent customer service, engage customers in conversations, and build relationships with them
  • Manage the schedule and the daily operations of the teller line
  • Make decisions and resolve issues related to daily operations of the teller line, under direction of regional banking management
  • Leverage interpretation of applicable regulations, policy and procedure requirements, and audit and escalation procedures
  • Support customers and employees in resolving or escalating concerns or complaints
  • Collaborate and consult with branch employees, colleagues, and mid-level managers
  • Interact directly with customers
  • Fulltime
!
Read More
Arrow Right
New

Demand Resource Analyst

We are seeking a Demand & Resource Analyst to act as the central coordination po...
Location
Location
Romania , Bucuresti
Salary
Salary:
Not provided
vodafone.com Logo
Vodafone
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Technical experience across fixed, data, and transmission telecommunications networks
  • Experience in project or programme management within a telecommunications implementation environment
  • Knowledgeable in network implementation projects and relevant industry standards for transmission equipment installation
  • Skilled in demand and resource management, with strong analytical capability and attention to detail
  • Comfortable working independently, meeting deadlines, and managing multiple priorities
  • A clear and confident communicator, able to translate complex technical topics into accessible messages
  • Experienced in stakeholder engagement and collaborative problem-solving
  • Proficient in English (written and spoken) at B2 level or above
  • Educated to university level, preferably in Automation, Telecommunications, Information Technology, or a related discipline
Job Responsibility
Job Responsibility
  • Evaluate the impact of new and ongoing business opportunities on network demand and resources
  • Collaborate with internal and external stakeholders to align scope, cost, and delivery with business objectives, budgets, and strategy
  • Ensure accurate and timely demand acceptance across UK network domains
  • Provide clear feedback to internal customers on forecasted costs, delivery timelines, and constraints
  • Maintain effective communication across the business until requirements are fully delivered
  • Manage priorities and address competing stakeholder requirements constructively
  • Track progress against forecasts and committed outcomes, highlighting risks and deviations
  • Develop action plans to mitigate issues, with clearly defined owners and deadlines
  • Maintain process documentation and resolve requirements related to tools and systems
  • Monitor and report key demand performance indicators for UK Demand Front Door networks
What we offer
What we offer
  • Hybrid way of working: 2 days per week/ 8 per month
  • Medical and dental services
  • Life and hospitalization insurance
  • Dedicated employee phone subscription
  • Take control of your benefits and choose any of the below options: MEAL TICKETS/ PRIVATE PENSION/VACATION VOUCHERS/ CULTURAL VOUCHERS within the budget
  • Special discounts for gyms and retailers
  • Annual Company Bonus
  • Ongoing Education
  • Work with tried and trusted web-technology
  • 23 days off
  • Fulltime
Read More
Arrow Right
New

Security Team Leader

We are now seeking a Security Team Leader to join our dedicated security team. T...
Location
Location
United Kingdom , York
Salary
Salary:
14.00 GBP / Hour
wilsonjames.co.uk Logo
Wilson James
Expiration Date
May 20, 2026
Flip Icon
Requirements
Requirements
  • Proven supervisory or management experience within security, facilities or a public‑facing environment
  • Strong leadership and people‑management skills with the ability to motivate and guide teams
  • Solid understanding of security operations, health and safety legislation and emergency procedures
  • Excellent communication, decision‑making and conflict‑resolution abilities
  • High levels of integrity, professionalism and reliability
  • Flexibility to work evenings, weekends and public holidays as required
  • A valid front‑line SIA and CCTV license
Job Responsibility
Job Responsibility
  • Lead, motivate and support a team of Security Officers to deliver safe, effective and professional operations
  • Oversee daily security activity including patrols, access control, incident management and emergency response
  • Ensure all duties—core and ad‑hoc—are appropriately staffed through effective workforce coordination
  • Conduct performance monitoring, appraisals and regular feedback to maintain high standards
  • Support training, mentoring and development initiatives to enhance team capability and confidence
  • Ensure compliance with health and safety legislation, museum policies and risk‑management procedures
  • Promote a positive, supportive working environment that prioritises staff wellbeing
  • Balance robust security practices with excellent visitor service, ensuring a safe and welcoming experience for all
What we offer
What we offer
  • Annual leave entitlement of 5.6 weeks
  • Lifestyle Benefits – Mortgage and financial advice, vouchers for various shopping outlets and food stores, employee referral scheme
  • Learning & Development – we actively encourage progression and offer various eLearning courses, progression, training whilst on site, apprenticeships, and in-house training courses
  • Health and Wellbeing – Life assurance scheme, access to mental health support specialists
  • Access to an Online GP for you and your dependents
  • Financial support
  • Discounts on hundreds of retail sites
  • Progression opportunities – many of our team go on to senior and site management roles
  • A welcoming, respectful team culture
  • Uniform and full induction provided
  • Fulltime
!
Read More
Arrow Right
New

Utility Cleaner

Our Utility Cleaners play an important role in support of a number of vital hote...
Location
Location
Peru , Lima
Salary
Salary:
Not provided
https://www.marriott.com Logo
Marriott Bonvoy
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • No high school diploma or G.E.D. equivalent
  • No related work experience
  • No supervisory experience
  • None
Job Responsibility
Job Responsibility
  • Preparing fresh clean linen and spotless dining ware for guests to enjoy
  • operating and maintaining cleaning equipment and tools (e.g., dish washing machines, hand wash stations, linen washers and dryers)
  • transporting dishware or linens across the hotel
  • ensuring a safe workplace
  • following company policies and procedures
  • upholding quality standards
  • ensuring professional uniform, personal appearance, and communications
  • ensuring adherence to quality expectations and standards
  • developing and maintaining positive working relationships with other employees and departments
  • supporting team to reach common goals
  • Fulltime
Read More
Arrow Right
New

Staff Pharmacist

We're building a world of health around every individual — shaping a more connec...
Location
Location
United States , Tucson
Salary
Salary:
60.00 - 76.00 USD / Hour
https://www.cvshealth.com/ Logo
CVS Health
Expiration Date
November 22, 2026
Flip Icon
Requirements
Requirements
  • Active Pharmacist License in the state where the Store is located
  • Active National Provider Identifier (NPI)
  • Not on the DEA Excluded Parties list
  • Regular and predictable attendance, including nights and weekends
  • Ability to complete required training within designated timeframe
  • Attention and Focus: Ability to concentrate on a task over a period of time
  • Ability to pivot quickly from one task to another to meet patient and business needs
  • Ability to confirm prescription information and label accuracy, ensuring patient safety
  • Customer Service and Team Orientation: Actively look for ways to help people, and do so in a friendly manner
  • Notice and understand patients' reactions, and respond appropriately
Job Responsibility
Job Responsibility
  • Living our purpose by helping to manage and improve patient health through safe and appropriate dispensing, counseling, and immunizing practices
  • Taking direction from the Pharmacy Manager and overseeing the pharmacy as their proxy during bench shifts without overlap, including strengthening pharmacy performance measures through effective coaching and consistent follow-up of pharmacy team members and providing feedback about pharmacy team performance to the Pharmacy Manager as needed
  • Assumes Pharmacy Manager's day-to-day duties when serving as the only or the primary pharmacist-on-duty
  • Supporting safe and accurate prescription fulfillment by following—and directing the pharmacy team to follow—pharmacy workflow procedures and utilizing the safety guardrails at every workstation
  • Contributing to positive patient experiences by showing empathy and genuine care, and coaching the pharmacy team to do the same: demonstrating compassionate care, collaborating with the patient's total healthcare team, and proactively resolving insurance and/or medication issues
  • Proactively offering and delivering immunizations to keep patients healthy
  • engaging and supporting Pharmacy Technicians to learn to immunize
  • Supporting the effective management of pharmacy inventory by following—and coaching the pharmacy team to follow—all inventory best practices, with a special focus on protecting cold chain products for our patients and our business
  • Partnering with the Pharmacy Manager to ensure pharmacy operations are compliant with the appropriate state Board of Pharmacy regulations at all times
  • escalating issues or concerns to the Pharmacy Manager and/or Rx DL for timely resolution if/as needed
What we offer
What we offer
  • Medical, dental, and vision coverage
  • Paid time off
  • Retirement savings options
  • Wellness programs
  • Bonus, commission or short-term incentive program
  • Fulltime
Read More
Arrow Right
New

Analyst, Corporate Banking - Capital Optimization & Returns

Wells Fargo is seeking a Corporate Banking Analyst to add to our Capital Managem...
Location
Location
United States , Charlotte
Salary
Salary:
Not provided
https://www.wellsfargo.com/ Logo
Wells Fargo
Expiration Date
May 15, 2026
Flip Icon
Requirements
Requirements
  • 6+ years of Corporate Banking Relationship Management experience, or equivalent demonstrated through one or a combination of the following: work experience, training, military experience, education
Job Responsibility
Job Responsibility
  • Manage routines and builds out processes aimed towards consistent and standardized Reporting and Analytics
  • Drive and enable data-driven product innovation and optimization through outcomes-oriented analytics and understanding of the business
  • Assess the return on capital of prospective borrowers and provide creative solutions for maximizing returns on capital while satisfying both the client and bank’s goals
  • Develop and maintain a deep understanding of the portfolio at the client, industry and macro level in order to assess RWA and Regulatory Capital and craft value added solutions
  • Partner with coverage and product partners to create portfolio and client level strategies
  • Interact with key stakeholders including Corporate Banking, Underwriting, Corporate Treasury and other support partners on a regular basis to understand requirements, develop and communicate effective solutions
  • Understand profitability/pricing tool and act as a consultant/advisor to teams through the modeling and capital review process and drive improvements to the tool by partnering with technology, finance, and other key stakeholders
  • Ensure the appropriate processes and routines are in place to maintain an effective control environment
  • Build real-time awareness for Top of House management on spread and loan volume, including loan origination and re-pricing spreads
  • Fulltime
!
Read More
Arrow Right
New

Scheduling Coordinator - Weekends

Are you ready for a new challenge within Construction Logistics? Do you want t...
Location
Location
United Kingdom , Somerset
Salary
Salary:
29522.76 GBP / Year
wilsonjames.co.uk Logo
Wilson James
Expiration Date
June 03, 2026
Flip Icon
Requirements
Requirements
  • CITB Operative H&S test (must be completed before the start date)
  • Previous experience using Delivery Management Systems
  • Working within a construction site
  • Radio communication confidence
  • Good written and verbal communication
  • Good IT skills and understanding of booking software
  • Demonstrate the ability to think and act quickly under pressure
  • Able to demonstrate an ability to work as part of a team
  • Ability to work with other internal processes and systems
Job Responsibility
Job Responsibility
  • Coordinating all vehicle and material movement up to building access areas, including controlling unloading activities
  • Using a bespoke delivery management system as well as utilising various vehicle and material management trackers to create forecasts and daily coordination plans supporting our client and other departments
What we offer
What we offer
  • Starting salary from £29522.76 per annum (depending on experience)
  • Shift Pattern: Friday- Monday, 07:00-16:45
  • 8.65% bonus
  • Annual leave of 25 days + Bank Holidays
  • Life assurance scheme
  • Company sick pay
  • Pension Scheme 5% employer contribution
  • Access to an industry-leading Employee Benefits Platform offering lifestyle savings and discounts on most high street retailers, a Reward and Recognition programme
  • The opportunity to develop your career with access to training and development programmes
  • Employee Assistance Programme that provides a health and wellbeing support service
  • Fulltime
Read More
Arrow Right
New

Housekeeping - Attendant

Respond promptly to requests from guests and other departments. Fill cart with s...
Location
Location
Fiji , Momi Bay
Salary
Salary:
Not provided
https://www.marriott.com Logo
Marriott Bonvoy
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Position open to Fiji Citizens only
  • High school diploma or G.E.D. equivalent
  • At least 1 year experience in a housekeeping role in a resort.
Job Responsibility
Job Responsibility
  • Respond promptly to requests from guests and other departments
  • Fill cart with supplies and transport cart to assigned area
  • Enter guest rooms following procedures for gaining access and ensuring vacancy before entering
  • Replace guest amenities and supplies in rooms
  • Replace dirty linens and terry with clean items
  • Make beds and fold terry
  • Clean bathrooms
  • Remove trash, dirty linen and room service items
  • Check that all appliances are present in the room and in working order
  • Straighten desk items, furniture and appliances
  • Parttime
Read More
Arrow Right