Full-Stack Software Engineer

Key Highlights:

• Job Title: Full-Stack Software Engineer

• Location: Paris, hybrid working

• Reporting to: Engineering Lead

• Salary: Up to €70k DOE

About Us

SaleCycle is redefining how brands convert, engage, and retain customers through AI-driven experiences across the entire customer journey.

SaleCycle combines real-time onsite personalisation and intent scoring with offsite activation across email, SMS, and paid channels, enabling brands to identify, engage, convert, and re-engage customers with precision.

What we do

• We provide a full-funnel Agentic Marketing Platform, combining:

• Real-time behavioural analytics and intent scoring

• AI-powered search, recommendations, and agentic decisioning

• Onsite personalisation and A/B testing

• Cross-channel activation (email, SMS, paid media)

• CRM/CDP integrations and first-party data orchestration

• Retail media and monetisation capabilities

Who we are

We are a global team of 80+ people across the UK, France, Spain, Italy, and Eastern Europe.

We are profitable, growing, and operating with a clear mindset:

• We build, not maintain

• We prioritise outcomes over activity

• We operate with low ego and high accountability

• We challenge ourselves to step outside our comfort zone

Our Values

At SaleCycle, we care about people; it’s our top priority. We prioritise well-being, growth, and innovation, continuously pushing boundaries as a team and a company.

• Continuous Innovation: Collaborate, innovate, and celebrate!

• Premium Execution: Excellence Delivered Every Time!

• High Curiosity: Embrace your inner child - ask why and listen!

• Proactive Collaboration: United, we work together and lead the way!

• Ultimate Passion: Infuse passion into every action!

Job Summary

As a Full-Stack Software Engineer, you'll join a highly collaborative, agile, empowered product delivery team building the SaleCycle platform that powers AI-driven personalisation, intent scoring, and cross-channel activation for e-commerce brands.

This is a full-stack role for someone who wants genuine full-stack range rather than staying purely on one side of the stack. You’ll work primarily in your strongest language, shipping features end to end across our React front end and our C#/.NET and Go backend services, with real opportunity to grow into our other core languages over time.

We’re flexible on the exact combination. What matters most is the shape: real depth on one side of the stack, solid hands-on experience on the other, and a genuine curiosity to keep learning, comfortable being a generalist rather than a specialist. We’re open to candidates matching any of these profiles:

• Profile A - Strong C#/.NET background, hands-on experience with React/TypeScript, and keen to learn Go

• Profile B - Strong Go background, hands-on experience with React/TypeScript, and keen to learn C#/.NET

• Profile C - Strong React/TypeScript background, working knowledge of C#/.NET or Go, and keen to deepen your backend skills

You’ll be joining a small, cross-functional engineering team spanning France and the UK, in an engineering organisation that is still taking shape following the SaleCycle × BEYABLE merger, a great opportunity to influence how we build, not just what we build.

Key Responsibilities

• Shipping features end-to-end across our stack: React/TypeScript front end, C#/.NET and Go backend services

• Designing and building services and APIs within a multi-tenant SaaS architecture serving e-commerce customers at scale

• Building clear, responsive UI that surfaces analytics, intent scoring, and decisioning outputs to our brands and internal teams

• Working across the API boundary to shape clean, well-documented contracts between front-end and backend services

• Growing your skills in the languages outside your current comfort zone, with support and pairing from the team

• Writing clean, maintainable, and efficient code following industry best practices (e.g., SOLID principles, testable design)

• Collaborating within an agile, Scrum-driven team, participating in sprints and planning sessions

• Contributing to automated testing, CI/CD pipelines, and monitoring of production systems

• Engaging in peer code reviews and sharing knowledge across our France and UK teams

Essential Skills & Experience

• Around 6 years of professional software engineering experience

• Deep, hands-on expertise on one side of the stack in production: C#/.NET or Go on the backend, or React/TypeScript on the frontend

• Solid, hands-on experience on the other side: React/TypeScript for backend-led profiles, C#/.NET or Go for frontend-led profiles

• Genuine interest in working across the stack and learning new languages

• Comfortable in a fast-moving, still-forming engineering organisation post-merger

• A pragmatic, delivery-focused mindset, comfortable with ambiguity and evolving standards

• Familiar with git or other distributed source control systems

Nice to Have

• Experience building or operating multi-tenant SaaS systems

• Familiarity with cloud platforms, ideally Azure or GCP

• Interest in AI-assisted development workflows (coding agents, LLM tooling)

• Exposure to AI/ML-powered products: personalisation, recommendation engines, or A/B testing platforms

• Experience with Docker and containerised environments

• Familiarity with operating in an ISO 27001-certified environment

Perks & Benefits

We value our employees at SaleCycle, so we offer great benefits and incentives in addition to a competitive salary. Please note benefits may vary by country.

⏱️ Flexible hybrid working

The Swile card to help cover your lunch expenses.

Full coverage of the Alan health insurance plan.

A day off on your birthday.

Additional leave based on seniority.

Regular events and after-work gatherings.

⏱️ Two remote work days per week.

Up to 28 days of remote work from abroad per year.

A monthly "well-being and engagement" budget for each employee.

For all our perks, please visit our website

Support & Equal Opportunities:

If you have a medical condition or require adjustments to our process, let us know so we can support you and ensure you have the best possible interview experience.

✨ We are an equal opportunities employer and value diversity. We do not discriminate based on race, religion, gender, nationality, sexual orientation, marital status, disability, or age.

Interested? Apply now!

We’d love to hear from you! If you’re excited about this opportunity and want to be part of a fast-moving, innovative team, apply today.