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Frontend Engineer

Design Engineer - Maternity Cover

Progress Software

Sofiasenior

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Role description

We are Progress - the trusted provider for software that enables our customers to develop, deploy and manage responsible, AI-powered applications and experiences with agility and ease.

We’re proud to have a diverse global team where we value the individual and enrich our culture by considering varied perspectives because we believe people power progress. Join us as a
Design Engineer
and help us do what we do best: empower developers with beautifully crafted, AI-ready UI component libraries and design system tooling.

Are you passionate about design systems, front-end architecture, and building tools that make developers’ lives easier? Progress is seeking a Design Engineer to join the Kendo UI team as a Maternity Cover. The position is in Sofia, Bulgaria.

Please note that this is a maternity cover position with an approximate duration of 1–1.5 years.
In This Role You Will

  • Own and evolve the Kendo UI Themes framework — a design-token-driven theming layer powering thousands of enterprise applications across the JS ecosystem (jQuery, React, Angular, and Vue) and .NET (Blazor, MVC, Core)
  • Architect and implement SCSS-to-CSS‑custom-property migration paths, enabling runtime theme switching and AI-assisted customization without build steps
  • Develop AI-enabled tooling and agentic workflows — including MCP servers, prompt-to-theme pipelines, and LLM-friendly configuration surfaces — that let customers generate and validate themes programmatically
  • Implement perceptually uniform color generation using OKLCH, with built-in WCAG/APCA contrast validation
  • Contribute to the creation of CLI and programmatic API that produces multi-format output (CSS custom properties, DTCG JSON, SCSS) from a single source of truth
  • Collaborate with product designers and developer advocates to ensure theming APIs are intuitive, well-documented, and aligned with modern CSS capabilities
  • Champion accessibility-first engineering — every generated theme must pass contrast validation before it ships
  • Participate in code reviews, architectural decision records, and cross-team alignment with the broader org

Your Background

  • 3+ years of professional experience as a Design or Front-End Engineer, with deep expertise in React and modern JavaScript/TypeScript
  • Strong command of SCSS/Sass architecture — mixins, functions, module systems, and large-scale variable management across multi-brand theme codebases
  • Hands-on experience building or contributing to design systems, component libraries, or theming frameworks at scale
  • Solid understanding of CSS custom properties, cascade layers (@layer), modern color spaces (OKLCH, Display P3), and the design tokens ecosystem (DTCG specification is a plus)
  • Experience with front-end architecture patterns: monorepo tooling (npm workspaces, Nx), build pipelines (tsup, Vite, Rollup), and CI/CD for library publishing
  • Familiarity with AI-enabled developer tools and agentic workflows — MCP servers, LLM integration patterns, prompt engineering, or building AI-powered features into developer products
  • Understanding of accessibility standards (WCAG 2.1 AA/AAA, APCA) and how they apply to color contrast, typography, and component design
  • Experience with Node.js backend tooling — CLI frameworks, file system operations, JSON schema validation
  • Excellent communication skills in English; comfortable with asynchronous collaboration across distributed teams
  • A genuine interest in developer experience, color science, and the intersection of design and engineering

If this sounds like you and fits your experience and career goals, we’d be happy to chat.
Compensation
What we offer in return is the opportunity to experience a great company culture with wonderful colleagues to learn from and collaborate with and also to enjoy:

  • Generous remuneration package.
  • Employee Stock Purchase Plan Enrollment.

Vacation, Family, and Health

  • 30 days paid annual vacation.
  • An extra day off for your birthday.
  • 2 additional days off for volunteering.
  • Premium healthcare and dental care coverage.
  • Additional pension insurance.
  • Well-equipped gym on-site with Cross-Fit equipment and climbing wall.
  • Co-funded Multisport card.
  • Flexible working hours.
  • Free underground parking with a designated space for bikes, motorbikes and electric scooters.

Apply now!

This is a saved copy of a posting published elsewhere. Postings get taken down without notice — check the employer's site before applying. mentors.coach is not the hiring party.

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Frontend Engineer

Software Engineer III - Eng

UKG

Sofiafulltime

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Role description

Why UKG
At UKG, the work you do matters. The code you ship, the decisions you make, and the care you show customers all contribute to helping millions of people around the world. We build software that helps organizations manage and empower their workforce, and we're committed to continuous innovation, collaboration, and growth.

***UKG is unable to offer sponsorship for this position.***

About The Role
We are looking for a Software Engineer III to help deliver and improve customer-facing capabilities on a mature, business-critical enterprise platform.

In this role, you will work across the software lifecycle: understanding customer and product needs, designing technical solutions, developing and testing software, supporting production quality, and continuously improving the systems and workflows around you.

The work will primarily involve Java backend development, with some React and JavaScript UI work. You will contribute to new features, defect resolution, system improvements, and approved AI-assisted engineering workflows that improve developer productivity, software quality, troubleshooting, and documentation.

What Success Looks Like
Successful engineers in this role:

  • Deliver complex software capabilities independently.
  • Take ownership of quality, maintainability, and production readiness.
  • Work effectively in complex existing codebases.
  • Use data, telemetry, and customer context to make better technical decisions.
  • Apply automation and approved AI-assisted tools to improve productivity and quality.
  • Collaborate respectfully with Product, UX, and Engineering.
  • Mentor engineers and raise the engineering bar through example.

Responsibilities:

  • Software Development: Write clean, maintainable, and efficient code for various software applications and systems.
  • Technical Collaborator: Contribute to the design, development, and deployment of complex software applications and systems, ensuring they meet high standards of quality and performance.
  • Project Management: Manage execution and delivery of features and projects, negotiating project priorities and deadlines, ensuring successful and timely completion, with quality.
  • Architectural Design: Participate in design reviews with peers and stakeholders and in the architectural design of new features and systems, ensuring scalability, reliability, and maintainability.
  • Code Review: Diligent about reviewing code developed by other engineers, provide feedback and maintain a high bar of technical excellence to ensure code is adhering to industry standard best practices like coding guidelines, elegant, efficient and maintainable code, with observability built from ground up, unit tests etc.
  • Testing: Build testable software, define tests, participate in the testing process, automate tests using tools (e.g., Junit, Selenium) and Design Patterns leveraging the test automation pyramid as the guide.
  • Service Health and Quality: Maintain the health and quality of services and incidents, proactively identifying and resolving issues. Utilize service health indicators and telemetry for action providing recommendations to optimize performance. Conduct thorough root cause analysis and drive the implementation of measures to prevent future recurrences.
  • Platform Model: Understanding of working in a DevOps Model. Taking ownership from working with product management on requirements to design, develop, test, continuously deploy continuously deploy and operate the software in production.
  • Documentation: Properly document new features, enhancements or fixes to the product, and contributing to training materials.

Minimum Qualifications:

  • Deep expertise in Java, React & JS.
  • 4+ years of professional software development experience.
  • Extensive experience with software development practices and design patterns.
  • Bachelor’s degree in Computer Science, Engineering, or a related technical field, or equivalent practical experience.
  • Proficiency with version control systems like GitHub and bug/work tracking systems like JIRA.
  • Understanding of cloud technologies and DevOps principles.

Preferred Qualifications:

  • Experience using AI-assisted software development tools to improve engineering productivity, software quality, testing, and troubleshooting.
  • Experience with cloud platforms like Azure, AWS, or GCP.
  • Familiarity with CI/CD pipelines and automation tools.
  • Experience with test automation frameworks and tools.
  • Knowledge of agile development methodologies.
  • Familiarity with developing accessible solutions.
  • Demonstrates strong customer empathy by understanding and addressing user needs and challenges.
  • Excellent communication and interpersonal skills, with the ability to work effectively in a collaborative team environment.

Benefits

  • 25 to 28 days of annual leave.
  • Medical coverage provided by Bulstrad for you and your dependents.
  • Life, AD&D, Disability & critical illness coverage provided by DZI.
  • Meal vouchers provided by Edenred - EUR 95 per month.
  • Employee Assistance Programs available 24/7.
  • Global Tuition Reimbursement program – up to EUR 3 425 per year.
  • Fertility support - up to EUR 6 525 per year.
  • Adoption assistance.
  • Business travel insurance.
  • U choose program - EUR 275 every quarter to be spent on eligible items.

Company Overview
****
UKG is the Workforce Operating Platform that puts workforce understanding to work. With the world's largest collection of workforce insights, and people-first AI, our ability to reveal unseen ways to build trust, amplify productivity, and empower talent, is unmatched. It's this expertise that equips our customers with the intelligence to solve any challenge in any industry — because great organizations know their workforce is their competitive edge. Learn more at ukg.com.

UKG is proud to be an equal opportunity employer and is committed to promoting diversity and inclusion in the workplace, including the recruitment process.

Disability Accommodation in the Application and Interview Process

For individuals with disabilities that need additional assistance at any point in the application and interview process, please email UKGCareers@ukg.com

The pay range for this position is €31,200 to €42,100 gross annually. The actual base pay offered may vary depending on skills, experience, job-related knowledge and work location. In addition to base pay, employees may be eligible to participate in a performance-based bonus plan and to receive restricted stock unit awards as part of total compensation. Learn more about UKG’s benefits and rewards at https://www.ukg.com/about\-us/careers/benefits

This is a saved copy of a posting published elsewhere. Postings get taken down without notice — check the employer's site before applying. mentors.coach is not the hiring party.

Frontend Engineer

Senior Software Engineer - Frontend

Palo Alto Networks

Sofiafulltimesenior

Apply on the employer's site

Role description

Our Mission
At Palo Alto Networks®, we’re united by a shared mission—to protect our digital way of life. We thrive at the intersection of innovation and impact, solving real-world problems with cutting-edge technology and bold thinking. Here, everyone has a voice, and every idea counts. If you’re ready to do the most meaningful work of your career alongside people who are just as passionate as you are, you’re in the right place.

Who We Are
In order to be the cybersecurity partner of choice, we must trailblaze the path and shape the future of our industry. This is something our employees work at each day and is defined by our values: Disruption, Collaboration, Execution, Integrity, and Inclusion. We weave AI into the fabric of everything we do and use it to augment the impact every individual can have. If you are passionate about solving real-world problems and ideating beside the best and the brightest, we invite you to join us!

We believe collaboration thrives in person. That’s why most of our teams work from the office full time, with flexibility when it’s needed. This model supports real-time problem-solving, stronger relationships, and the kind of precision that drives great outcomes.

Job Summary
We are looking for a highly experienced, curious and driven software engineer to join a growing area of our business. Workload Identity presents a huge opportunity to change the way that communication between services is secured. It is also a challenging area which touches on many different foundational pieces of modern software development – networking, security, authorization, SDKs, cloud, Kubernetes and much more.

We are looking for a high-performing frontend engineer to join the team. This role has a lot of scope for growth, and will require being adaptable as we move through the product development lifecycle and grow the team.

Responsibilities

  • Design and develop software to solve Workload Identity challenges, from prototyping to production
  • Develop, shape, lead, mentor, and collaborate with a close-knit team
  • Work with stakeholders (internal and external) to discuss ideas, present work that has been done, discuss priorities and options. In particular bringing the technical point of view on what is possible and what is easier or harder
  • Lead on the frontend side of the project, driving standards and recommending approaches that will serve the project best
  • Work with other frontend developers on shared components and standard approaches
  • Stay on top of changes in the ecosystem and priorities work to update components, in particular eliminating all vulnerable dependencies

Qualifications

  • 5+ years of frontend software development experience, including design, implementation, and testing
  • Knowledge of software development in Typescript
  • Experience solving problems at enterprise scale, performance and quality standards
  • Experience working with UX teams to design UI and provide feedback about implementation cost
  • Experience in product development and working with product managers and field teams

Our Commitment
We’re trailblazers that dream big, take risks, and challenge cybersecurity’s status quo. It’s simple: we can’t accomplish our mission without diverse teams innovating, together.

We are committed to providing reasonable accommodations for all qualified individuals with a disability. If you require assistance or accommodation due to a disability or special need, please contact us at accommodations@paloaltonetworks.com.

Palo Alto Networks is an equal opportunity employer. We celebrate diversity in our workplace, and all qualified applicants will receive consideration for employment without regard to age, ancestry, color, family or medical care leave, gender identity or expression, genetic information, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran status, race, religion, sex (including pregnancy), sexual orientation, or other legally protected characteristics.

All your information will be kept confidential according to EEO guidelines.

Is role eligible for Immigration Sponsorship? No. Please note that we will not sponsor applicants for work visas for this position.

This is a saved copy of a posting published elsewhere. Postings get taken down without notice — check the employer's site before applying. mentors.coach is not the hiring party.

Frontend Engineer

.NET Software Engineer

Milestone Systems

Sofia

Apply on the employer's site

Role description

Join Milestone and help us shape the future of video technology.

Impact & Purpose
Ready to make an impact? In this role, you’ll have the opportunity to build industry-leading video management software used by organizations around the world to protect people, assets, and operations.

Location
We are looking for a
.NET Software Engineer
, based in
Sofia, Bulgaria (hybrid mode of working)
.

Role Summary
As a .NET Software Engineer you will be responsible for maintaining, modernizing, and evolving critical components of the XProtect platform.

In this role, you'll solve complex technical challenges, collaborate with experienced engineers, and create solutions that directly impact thousands of customers worldwide.

What You Will Do:

  • Design, develop, and maintain software components using C# and .NET.
  • Investigate and resolve complex technical issues across a large-scale enterprise platform.
  • Develop automation, tooling, and product improvements that enhance reliability and maintainability.
  • Collaborate with Product Management, Quality Assurance, Customer Support, and other engineering teams.
  • Participate in troubleshooting, root cause analysis, and long-term solution design.
  • Contribute to product enhancements, modernization efforts, and technical debt reduction.
  • Support product releases and customer-facing engineering initiatives.
  • Share knowledge and contribute to a culture of continuous improvement.

What You Bring to The Team:

  • At least 3 years of experience developing software using C# and .NET.
  • Strong understanding of object-oriented design and software engineering principles.
  • Experience troubleshooting and debugging complex systems.
  • Knowledge of REST APIs, distributed systems, and Windows-based applications.
  • Experience working with source control and CI/CD pipelines.
  • Experience with enterprise-scale software products.
  • Knowledge of SQL Server and database development.

How You Will Make a Difference:

  • You have strong problem-solving and analytical skills.
  • You have effective communication and collaboration skills.

About the Team
You'll join a team focused on supporting and evolving core areas of the XProtect platform. The team works closely with Product Management, Customer Support, and engineering organizations across Milestone to deliver high-quality solutions that improve stability, reliability, deployment, upgrade experiences, and customer success.

How We Support You:

  • Individual development plans aligned with your career goals
  • Access to training, learning resources, and certifications
  • Flexible working arrangements
  • Supportive leadership and regular feedback
  • Opportunities for cross-functional and cross-regional collaboration
  • Social activities and spaces to connect with colleagues

What We Offer:

  • Hybrid-friendly/flexible way of working
  • 25 days’ vacation
  • Employer covered luxury health and dental packages
  • Transportation benefits
  • Compliments gift card
  • Food vouchers
  • Multisport card covered by the employer
  • Employee Assistance Program supporting mental, financial and legal topics

Excited to join a team that values people and innovation? Hit the Apply button and submit your CV in English today.

About Us
Milestone Systems is a leading provider of data-driven video technology software. Our portfolio includes XProtect video management software, Arcules video surveillance as a service, and BriefCam analytics. We amplify what organizations of any size can see, do, and achieve with video. Guided by our People First mindset—freedom, inclusion, and togetherness—we always consider our employees, partners, and communities in everything we do.

This is a saved copy of a posting published elsewhere. Postings get taken down without notice — check the employer's site before applying. mentors.coach is not the hiring party.

Frontend Engineer

UI/UX Designer - Cloud Platform

Ingenico

Sofialead

Apply on the employer's site

Role description

Ingenico is the global leader in payments acceptance solutions. As the trusted technology partner for merchants, banks, acquirers, ISVs, payment aggregators and fintech customers our world-class terminals, solutions and services enable the global ecosystem of payments acceptance. With 40 years of experience, innovation is integral to Ingenico’s approach and culture, inspiring our large and diverse community of experts who anticipate and help shape the evolution of commerce worldwide. At Ingenico, trust and sustainability are at the heart of everything we do.

We are looking for a
UI/UX Designer
to contribute to the design of user interfaces for our strategic cloud platform, including payment applications and device management solutions.

This role focuses on
strong execution, collaboration, and consistent application of our design system across products.
Responsibilities

  • Collaborate closely with product managers, designers, and development teams to design intuitive, scalable user interfaces for our cloud product portfolio
  • Contribute to the evolution and consistent application of the cloud product design system, ensuring alignment with UX/UI guidelines
  • Work with design and development teammates to ensure designs are feasible, well-documented, and implemented accurately
  • Participate actively in agile ceremonies (reviews, refinements, retrospectives), providing design input aligned with user and business needs
  • Support shared ownership of the design system by applying standards and patterns consistently across teams
  • Identify design and technical constraints and help document components, patterns, and foundations to improve reusability
  • Apply accessibility best practices and contribute to reducing design and technical debt
  • Create high-quality UI/UX deliverables, including wireframes, user flows, prototypes, and high-fidelity designs that are ready for development
  • Clearly communicate design decisions and rationale to both technical and non-technical stakeholders

Requirements

  • Bachelor’s degree in a relevant field or equivalent professional experience
  • 3+ years of experience in UI/UX design, preferably working within agile, cross-functional product teams
  • Solid understanding of UI design principles, usability, accessibility, and responsive design best practices
  • Strong proficiency in Figma and experience working with established design systems (e.g., Maestro)
  • Basic understanding of front-end technologies such as HTML, CSS, and SASS; familiarity with React is a plus
  • Experience designing with implementation in mind and contributing to design documentation
  • Comfortable collaborating remotely within a global, multicultural environment

What We Offer

  • 25 days of paid annual leave
  • Additional health insurance
  • Annual performance bonus
  • Re:benefit monthly budget for flexible perks
  • Birthday benefit: 1 extra day off in your birthday month + 200 BGN added to your Re:benefit
  • Volunteer Time Off
  • Referral Bonus Program
  • Parental Benefit: Extra support if you become a parent while at Ingenico
  • Work-from-home opportunities after probation
  • LinkedIn Learning platform access
  • Corporate discounts
  • Cozy office close to a subway station
  • Fresh fruits and nuts in the office

As part of our values, we embrace diversity and inclusion at Ingenico. We are an equal opportunity employer and do not discriminate on the basis of an individual's race, national origin, color, gender, gender identity, gender expression, sexual orientation, religion, age, disability, marital status or any other protected characteristic under applicable law, whether actual or perceived. Ingenico welcomes and encourages applications from people with disabilities. Accommodations are available on request for candidates taking part in all aspects of the selection process

We want to adapt our processes and create a safe work environment that welcomes everyone.

To learn more about what it's like working inside Ingenico, follow us on LinkedIn

This is a saved copy of a posting published elsewhere. Postings get taken down without notice — check the employer's site before applying. mentors.coach is not the hiring party.

81 more openings in this category and country

Design Engineer - Maternity CoverProgress Software · Bulgaria

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