Full Stack Engineer (Ruby on Rails)

Department: Engineering

Location: Bulgaria

Description Job Title: Full Stack Engineer (Ruby on Rails)

Employment Type: Full-time | Permanent | Remote

Location: We welcome applications from candidates across Bulgaria for this fully remote role. Please note that you will need to have the right to work in the Bulgaria, as we are currently unable to offer visa sponsorship.

WE ARE ZIGZAG - THE WORLD’S MOST CONNECTED POST-PURCHASE AND RETURNS NETWORK

We are an award-winning eCommerce returns and post purchase specialist, founded in 2015.

With over 250 team members across the UK, Bulgaria, France, Portugal, Germany, and Spain, we are continually innovating the after-checkout experience for our retailers by reducing cost and complexity, driving sustainability, and fostering customer loyalty.

Today, our SaaS platform provides access to over 3,000 carrier lanes across 170 countries, supporting more 1,100 retailers including our leading enterprise and logistics clients The Very Group, New Look, Boden, Selfridges, Sports Direct, The Hut Group, Swarovski, L’Occitane, Photobox, Carrefour, Lands’ End and DHL.

We were the experts in returns. Now we are the experts in the whole post-purchase experience!

👉 Discover more:

OUR CULTURE AND VALUES

Our culture is built on three core values, Start-up Spirit, Human Heart, and a Grown-up Mindset which guide how we collaborate and make decisions.

It isn’t something written on posters – it’s something we bring to life every day through our actions, our relationships, and how we show up for each other and our customers.

Everyone plays a role in shaping our culture through how we communicate, support one another, and celebrate success. Being a ZigZagger means taking ownership, bringing curiosity and energy to everything you do, showing resilience when challenges arise, and leading with care by putting “we before me.” You’ll use sound judgment, stay open to new perspectives, and continuously look for ways to learn, grow, and improve.

About The Role

We're seeking an experienced Full Stack Engineer with a proven background in Ruby on Rails development to help drive the continued growth of our Engineering team. You'll have the opportunity to work on a modern, scalable platform, solve complex technical challenges, and play a key role in delivering high-quality products.

You will work closely with Product Managers, Designers, and Engineers to build, maintain, and improve applications that deliver real value to our customers. As part of a collaborative engineering team, you will contribute to feature development, system improvements, and technical problem-solving while continuing to grow your skills and expertise.

Our Technology Stack

Ruby on Rails / Go / TypeScript / React / Redux / PostgreSQL / Elasticsearch / RabbitMQ / Redis / Google Cloud Platform (GCP) / Kubernetes / Docker / Datadog / Sentry

Key Responsibilities

• Develop, maintain, and enhance Ruby on Rails applications and backend services.
• Build and maintain APIs and integrations with internal and external systems.
• Write clean, maintainable, and well-tested code.
• Collaborate with Product, Design, and Engineering teams to deliver new features and improvements.
• Participate in code reviews and technical discussions.
• Troubleshoot and resolve bugs and production issues.
• Support application performance, reliability, and scalability improvements.
• Contribute to testing, deployment, and continuous integration processes.
• Document technical solutions and share knowledge with the wider team.
• Continuously develop your technical skills and stay current with industry best practices.

What We're Looking For

• Commercial experience developing applications using Ruby on Rails.
• Good understanding of object-oriented programming and software engineering principles.
• Experience with React or TypeScript.
• Exposure to cloud platforms such as GCP, AWS, or Azure.
• Experience building and consuming RESTful APIs.
• Experience working with relational databases, ideally PostgreSQL.
• Familiarity with automated testing and CI/CD practices.
• Experience using Git and collaborating within an Agile development environment.
• Strong problem-solving and debugging skills.
• Good communication and teamwork skills.
• Ability to work effectively in a remote and collaborative environment.
• Fluent English communication skills.

Desirable Skills & Experience

• Knowledge of Docker and containerised applications.
• Familiarity with RabbitMQ, Redis, or Elasticsearch.
• Experience working within SaaS, e-commerce, or technology-focused businesses.

What We Offer

• 20 days’ annual leave plus public holidays, with additional holiday entitlement awarded for each completed year of service (up to a maximum of six extra days). Plus, to celebrate you, enjoy an extra day off on your birthday.
• Collaborative working environment
• Remote working with optional access to our Varna office for those who enjoy a hybrid working environment
• Healthcare insurance with dental service included
• Food vouchers ( €102.26 month per person)

👉 Explore our full range of benefits here: ZigZag Bulgaria Social Benefits.pdf

If you are interested, please send your CV in English.

Equity, Inclusion & Transparency

In line with the EU Pay Transparency Directive, we are committed to transparency and will share the salary range for this role prior to the interview stage.

A diverse and inclusive workplace where everyone feels a sense of belonging is a priority, and applications are welcomed from people of all backgrounds and experiences. Reflecting how we live our own values of meritocracy over hierarchy, even if not every requirement is met, interest in the role is encouraged.

Hiring focuses on people as well as skills—if this opportunity resonates, you’re encouraged to apply and bring your unique perspective.