Experienced Software Engineer

Hi, we're Back Market.

We're here to help
make tech reliable, affordable, and better than new
. We're a global marketplace for refurbished devices, helping lower our collective environmental impact by providing trustworthy, affordable tech with 92% less carbon emissions than new.

Yep, you read that right. Turns out refurbished tech is way better for the planet than new. In fact, With every device purchased on Back Market, our positive impact on the planet grows. From our Customer Care representatives to our software engineer, every individual at Back Market cuts the planet — and consumers — a break.
Our mission is simple: to do more with what we already have.
Are you ready to join us?

About The Role
As an
experienced software engineer
on our Payin team, you'll be at the heart of Back Market's payment ecosystem. You'll craft secure, seamless payment experiences that enable millions of customers worldwide to purchase refurbished devices with confidence.

The Payin team owns the complete payment journey — from checkout optimization to fraud prevention, from new payment method integrations to PCI DSS compliance. We're tackling exciting challenges like implementing one-click payments, launching new payment methods across different markets, and building next-generation payment forms that guide users effortlessly through their purchase.

What You Will Do In This Role
We're looking for
versatile
engineers who show strong ownership and are motivated to take on new challenges across the technical stack while helping us move our technology forward.

You will be working in an agile
"build it and run it"
environment where engineering teams build, launch, monitor and support the product that they own.

Driven by the desire to craft outstanding products, you understand how to deliver seamless user experiences at scale.

We are looking for
passion
in creating systems by producing clean, consistent and well-organised code.

As well as a good team player supporting colleagues and creating a learning and sharing environment

English
must be a no-brainer
as you will join an international team dispatched in different locations around the world (US/FR/ES/JP).

What You'll Work On
Payment Experience Innovation

• Build and optimize payment forms that improve conversion rates across web and mobile
• Integrate new payment methods like Klarna, PayPal, and Open Banking solutions
• Develop one-click payment features for returning customers
• Create responsive payment flows that work seamlessly across devices

Security & Compliance

• Implement PCI DSS compliant payment interfaces
• Build isolated payment applications to reduce security scope
• Develop secure tokenization and fraud prevention features
• Create automated systems for chargeback management

Technical Excellence

• Contribute to our design system and component library
• Build comprehensive testing suites (unit, integration, e2e)
• Implement monitoring and alerting for payment systems
• Optimize performance for high-traffic payment flows

Technical Environment & Tech Stack
Backend:
Python - FastAPI , SQLAlchemy, Celery, Golang, Django (being phased out)

Frontend
: VueJS, Typescript, Nuxt, Revolve (our design system)

Data:
PostgreSQL, Redis, Kafka, RabbitMQ, BigQuery

Infrastructure:
GCP, Kubernetes, Docker, Datadog, ArgoCD, CircleCI, Github

Our payment systems integrate with Adyen, Signifyd, and various payment providers across global markets.

Technical Skills
What We're Looking For

• 2+ years of engineering experience
• Full-stack engineer enthusiastic about working across the entire stack
• Open to working with TypeScript and Python in a cross-platform environment, familiar with modern web technologies
• Understanding of payment systems and security best practices
• Familiarity with testing frameworks and methodologies

Mindset & Approach

• Code quality is your priority — you follow best practices religiously
• Testing isn't optional (Clean Code, TDD, BDD principles)
• You're curious, proactive, and take ownership of your work
• Comfortable working both independently and collaboratively
• You can anticipate how interfaces need to evolve with business strategy

Bonus Points

• Experience with payment integrations and PCI DSS compliance
• Experience with monitoring tools and performance optimization
• Knowledge of accessibility standards
• Familiarity with fraud prevention systems

Regarding the seniority
As an
Experienced Engineer:
Produce & Optimize

• Works autonomously on development tasks within the team's application or service
• Delivers high-quality code on time
• Demonstrates professional collaboration with teammates and peers
• Operates autonomously within the squad's technical scope

Recruitment Process

• First discussion with one of our Tech recruiter (45 minutes to 1h)
• Backend Technical modules with 2 backend engineers
• Coding and testing (1h)
• System design & APIs (45 min)
• Feature kickoff exercise with two Frontend Engineers - 60 min
• Tech leadership discussion with BoT team members - 45 min
• Team fit with your future manager - 30 min
• Back Market values interview with C-level - 45 min

WHY SHOULD YOU JOIN US ?
At Back Market, we're committed to hiring and supporting diverse teams of people from all backgrounds, experiences, and perspectives — it's one of the reasons we're such a high-scoring certified B Corp company

Benefits
No matter your role and seniority level, you'll enjoy impact-driven work with hands-on career development in an innovative, driven, and fast-paced environment — with benefits to match, like:

• A mission-driven work environment where your day-to-day makes an impact on the planet. Seriously.
• Hybrid work environment, with 2 remote days a week and 1 remote work week per quarter, plus 3 flex days.
• Employee Resource Groups, including mentorship programs, comprehensive accessibility policies, and cultural competency training.

At Back Market, we strive to create a workplace that embodies the world we're trying to change. We've embedded our diversity, equity, and inclusion principles into our DNA — from dedicated staff to employee resource groups to our company values.

We know that the perfect background for a role doesn't mean the perfect fit — we encourage you to apply for a role even if you think you may not have all the qualifications.

If reasonable accommodations are needed for the interview process, please do not hesitate to discuss this with the Talent Acquisition Team.