Senior Frontend Developer

Posted 2 Days Ago
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Sofia, Sofia-grad, BGR
Hybrid
Senior level
Artificial Intelligence • Information Technology • Marketing Tech • Software
The Role
Design and deliver scalable, accessible React-based features; ensure code quality via testing and peer review; optimise performance and security; lead technical workstreams; introduce CI/CD automation; mentor engineers; present demos to stakeholders; contribute to recruitment and knowledge-sharing.
Summary Generated by Built In

Waracle are looking for a Senior Frontend Developer for an exciting new role joining our world-class digital technology consultancy and home to a diverse, smart, curious and ambitious community of specialists in technology-driven transformation. We work with ambitious clients to help them solve their biggest business and customer challenges. We help our clients to innovate and create intelligent digital products and services. We thrive on complex challenges and deliver business-critical IT transformation projects, moving seamlessly from strategy, design and delivery to operations.

This is a Hybrid role working from our Sofia office 2 days a week, offering you the perfect balance of collaborative in-person connection and focused remote flexibility.

Key Aspects of the Role

As a Senior Frontend Developer at Waracle, you will be a vital technical anchor within our delivery teams. You will bridge the gap between complex technical requirements and beautifully accessible digital products, ensuring everything we build is scalable, high-performing, and secure.

Beyond writing clean code, your collaborative spirit will shine as you act as a trusted consultant and mentor. You will help shape our technical direction, identify risks early, and champion the inclusive engineering standards that keep our projects maintainable and our teams thriving.

Duties of this role include:

  • Engineering Excellence: Designing and delivering end-to-end features while ensuring code is modular, reusable, and follows SOLID principles.

  • Quality & Standards: Conducting peer reviews, enforcing coding standards, and guiding the overall testing strategy across unit, integration, and UI levels.

  • Performance & Security: Optimising application responsiveness and accessibility while maintaining robust security by applying industry-standard defensive measures.

  • Technical Leadership: Leading the delivery of specific workstreams, translating business objectives into technical tasks, and resolving day-to-day delivery issues independently.

  • Operational Efficiency: Introducing automation and CI/CD pipelines into the workflow and driving consistent sprint velocity to ensure readiness for release.

  • Stakeholder Engagement: Presenting confident demos to clients, explaining technical trade-offs in plain language, and summarizing complex discussions into clear team actions.

  • Professional Contribution: Representing Waracle in recruitment panels, running internal knowledge-sharing sessions, and contributing to our Community of Practice (CoP) initiatives.

What You’ll Bring

  • 3+ years of professional Frontend Development experience, with deep, proven expertise in our primary stack: React or React Native.

  • A versatile technical toolkit: Experience with other frontend frameworks (like Vue or Angular) is a wonderful plus.

  • An inclusive, mentorship-first mindset: A passion for supporting the growth of others and creating psychological safety within engineering teams.

  • Exceptional communication skills: The ability to present ideas clearly, listen actively, and build strong relationships across a wide variety of personality types.

  • A proactive mindset: A habit of sharing context with new joiners and making sure everyone feels included and informed.

The Recruitment Process

  1. Initial Chat: You’ll have a call with your dedicated Talent Acquisition Partner and a member of our technical panel to talk about Waracle, your career goals, briefly about your experience and the “important stuff” like salary and benefits.

  2. Two-Stage Process: You’ll be invited to showcase your skills and find out more about the role.

  3. Supportive Onboarding: Your Talent Partner will guide you through the whole process right up to your first day.


Our Benefits

We believe in supporting our team, inside and outside of work. Here's a glimpse of what you can expect:

Healthcare and insurance: 

  • Additional health insurance with dental treatment included

  • Wellbeing support

Entertainment and discounts: 

  • Team parties and teambuildings

  • Multisport card

  • CoolFit card

Professional development:

  • Certification Courses

  • Learning Pathways and Transparent career paths

  • Udemy Business

  • Networking Opportunities

  • Public Speaking Opportunities

Others:

  • MackBook, peripherals, and other gadgets that are needed

  • Charity Committee

We are an equal opportunities employer and welcome applications from all suitably qualified persons regardless of their race, gender, disability, religion/belief, sexual orientation or age.

Skills Required

  • 3+ years professional Frontend Development experience
  • Deep proven expertise in React or React Native
  • Experience with CI/CD pipelines and automation
  • Experience with unit, integration, and UI testing
  • Experience optimising performance, accessibility, and frontend security
  • Technical leadership delivering workstreams and translating business objectives
  • Inclusive, mentorship-first mindset
  • Exceptional communication and stakeholder presentation skills
  • Experience with other frontend frameworks (Vue or Angular)
Am I A Good Fit?
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The Company
London, England
140 Employees
Year Founded: 2008

What We Do

Waracle design & engineer intelligent digital products for financial services, health and energy businesses across the UK & Europe. Our team of industry-leading experts create digital products that generate vast quantities of data via user interactions, customer engagement & novel use of device sensors. The high-quality, clean data that we generate has been used to power some of the most innovative uses of machine learning and artificial intelligence in our chosen sectors. We collaborate with clients such as the NHS, Imperial College London, Virgin Money, LifeArc, Natwest, Royal London, Sainsbury's Bank, Scottish Power, Iberdrola and more. We are Waracle - Intelligent Digital Experiences. For careers visit - www.waracle.com/careers

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