Senior Full-stack Engineer (backend-heavy) at Preply

✨ The Stack take on this Preply job

• 🏢 Preply has 6 jobs here, 6 with visa sponsorship see all
• 🛂 Visa: Highly Qualified Professional permit. Education: Higher education degree guide
• 💡 No salary shown. Ask Preply if it is above the minimum.

Updated 2026-11-03, from our data and official sources.

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About the role

Responsibilities:
- Lead backend-heavy full-stack initiatives: design, implement, and own backend services (Python/Django) and frontend components (React/TypeScript).
- Collaborate with cross-functional teams (PMs, designers, data analysts) to deliver measurable product outcomes and run experiments (A/B tests).
- Architect scalable, reliable systems and integrations with third-party vendors; focus on observability, monitoring, and CI/CD.
- Mentor engineers, run architecture and code-quality reviews, and promote AI-augmented development practices.
- Drive data-driven decisions by instrumenting metrics and improving service reliability at scale.

Requirements:
- 5+ years of software engineering experience with strong backend expertise and system-design capability.
- Hands-on experience with Python/Django (or equivalent backend stack) and React/TypeScript on the frontend.
- Experience with distributed systems, API design, CI/CD pipelines, observability, and running experiments.
- Strong communication skills in English and demonstrated ability to lead technical initiatives and mentor teammates.
- Comfortable working in a high-deployment-frequency, data-driven environment and adopting AI-augmented tooling.

Responsibilities

You will lead complex full-stack initiatives using Python/Django and React while driving engineering excellence through mentorship and architectural reviews. You will also collaborate with cross-functional teams to deliver data-driven product outcomes and integrate AI-augmented development workflows.

Requirements

The role requires senior-level full-stack expertise with a backend-heavy focus and deep hands-on experience in Agentic AI. Candidates must demonstrate strong system design skills, the ability to navigate technical ambiguity, and excellent communication skills in English.

Key skills

• Python — in 1173 other listings on The Stack
• Django — in 51 other listings on The Stack
• React — in 274 other listings on The Stack
• TypeScript — in 462 other listings on The Stack
• Agentic AI — in 36 other listings on The Stack
• System design — in 198 other listings on The Stack
• API development — in 125 other listings on The Stack
• Distributed systems — in 332 other listings on The Stack
• CI/CD
• Observability
• Technical leadership
• Mentorship
• A/B testing
• Data-driven decision making
• Full-stack development
• Software architecture

On The Stack (as of 2026-11-03)

• Preply has 5 other listings on The Stack, 5 of them marked as offering visa sponsorship.
• 67 visa-sponsored jobs in Spain on The Stack, posted in the last 60 days.
• 68 visa-sponsored backend engineer jobs in Europe on The Stack, posted in the last 60 days.

Frequently asked questions about Preply

Is this Senior Full-stack Engineer (backend-heavy) role still open?

It was posted on 2026-08-10. Listings more than 30 days old may no longer be active, so check Preply's site before applying.

Does Preply offer visa sponsorship?

This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on Preply's site.

Where is this role located?

The listing gives the location as Barcelona, Spain. It is marked hybrid.

What skills does this role ask for?

The listing names: Python, Django, React, TypeScript, Agentic AI, System design, API development, Distributed systems, CI/CD, Observability, Technical leadership, Mentorship, A/B testing, Data-driven decision making, Full-stack development, Software architecture.