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Full-time
Flexible hybrid remote model, International environment, Wellbeing support, Collaborative work environment
Posted 46d ago
~40 hrs/week
Responsibilities
The Senior Staff Engineer will drive the development, reliability, and scalability of backend systems and infrastructure while shaping the overall technology strategy. They will also mentor team members, optimize cloud resources, and ensure architectural decisions align with product goals.
Requirements
Candidates must have deep experience in cloud architecture, specifically with GCP, and strong proficiency in Ruby on Rails. Fluency in English is required, and the candidate must already reside in France with the legal right to work there.
Full job description
Senior Staff Engineer
Department: Engineering
Employment Type: Permanent - Full Time
Location: France
Reporting To: Orlin Bobchev
Description
Job Title: Senior Staff Engineer (Backend & Infrastructure) Contract: Permanent (CDI) Location: Paris or full-remote position in France. You must already be living in France and have the legal right to work here without visa sponsorship, as we’re unable to provide sponsorship for this position.
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!
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 looking for an experienced Senior Staff Engineer (Backend & Infrastructure) to play a key role within the team. This position offers significant impact across the product, with broad collaboration across ZigZag as we unify our post-purchase and returns products into a single, seamless offering. As we advance this transition, you’ll be instrumental in shaping the strategy and enabling teams to execute it effectively across our most critical areas.
You will help define and model best practices, setting clear standards for behaviours, performance, and technical excellence within the backend and infrastructure domains.
Your primary objective will be to drive the development, reliability, and scalability of backend systems and infrastructure, ensuring they effectively support the organisation’s ongoing growth.
This role offers a unique opportunity to influence the direction and success of our product and tech team significantly. If you are passionate about leading backend and infrastructure efforts in a dynamic and growing environment, we would love to hear from you.
Implement and oversee quality assurance and security processes and practices on the backend side.
Oversee and optimize our cloud infrastructure, ensuring resource allocation is balanced, especially during high-peak periods like Black Friday.
Actively participate in refining engineering processes such as continuous integration/continuous deployment (CI/CD) and code reviews to enhance team productivity, and efficiency, and elevate product quality and security.
Evaluating relevance to switch from a worker-based approach to an event-driven one
Pairing with squad developers on day-to-day product work to share knowledge & practices
Contribute to defining and shaping tech and product initiatives.
Responding to and troubleshooting unexpected issues that could impact business operations.
Engage with cross-functional business teams to identify and communicate technical constraints impacting specific use cases.
What We're Looking For
Deep experience in cloud architecture and infrastructure, ideally within GCP, with Azure or AWS experience also considered.
Very good understanding of Ruby & Ruby on Rails.
Fluent in English. Strong French would be advantageous.
Expertise in managing infrastructure and associated technologies, with an emphasis on scalability and reliability. You have developed strong reflexes to calmly address incidents of various types and impacts
High willingness and ability to transmit knowledge. Curious and keeping up to date with industry novelties.
Strong background working across multiple environments and products, with the ability to navigate and optimise complex, distributed systems is a plus.
What We Offer
A challenging and learning environment: we value high standards and empowerment. We always strive to make our employees grow to stay at the forefront of the market by knowing and using effective, up-to-date tools, frameworks, and processes!
Flexible hybrid remote model: work from our Paris office or fully remotely, as long as your located in France. We know that everyone has their own way of working that best fits their lifestyle and needs.
International environment: join a diverse team with 10+ nationalities where English is our official language.
People-centric company: we believe that happy and healthy collaborators can achieve great things. Investing in their wellbeing is investing in our success.
Fun workplace where connections thrive: we value human connections and a collaborative work environment. That is why we organize opportunities to spend time together, whether physically or remotely.
Please note that applications will be reviewed from the week commencing 24 August 2026. We thank you for your patience and will be in touch with shortlisted candidates following this review period.
This vacancy is being advertised in multiple locations; however, it represents a single opportunity with flexibility based on your current location.
Please ensure that your CV is submitted 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.
Related keywords
BackendInfrastructureSaaSRuby on RailsGoTypeScriptReactGCPKubernetesDockerPostgreSQLElasticsearchRabbitMQRedisDatadogSentry
ZigZag is the world’s most connected post-purchase and returns network.
Industry
Technology, Information and Internet
Company size
201-500 employees
Founded
2015
Headquarters
London, England
LinkedIn followers
21,501
Total funding
$20M
ZigZag is the world’s most connected post-purchase and returns network, powering every stage of the post-purchase journey for eCommerce retailers.
The ZigZag platform connects major retailers to a global network of 220+ warehouses and 3,000+ carrier lanes in 170+ countries. ZigZag's clients include Selfridges, Frasers Group, Boden, New Look, The Hut Group, and many more.
Combining unmatched infrastructure with accurate intelligence and real-time insights, ZigZag helps retailers protect profit, build customer loyalty after checkout and transform returns from a cost centre into a commercial advantage. The mission is to be the global backbone of a post-purchase and returns ecosystem that works for consumers and retailers alike. .