---
title: 'Senior II Security Engineer - Platform at Preply'
canonical: 'https://feeny.ai/job/senior-ii-security-engineer-platform-preply-barcelona-axssg5et6aqd'
type: 'job'
last_seen: '2026-09-09'
---

# Senior II Security Engineer - Platform at Preply

- **Company:** [Preply](https://feeny.ai/companies/preply)
- **Location:** Barcelona, Spain
- **Employment:** full-time
- **Work type:** hybrid
- **Posted:** 2026-04-13
- **Last confirmed live:** 2026-09-09
- **Apply:** https://jobs.ashbyhq.com/preply/3c30ae7f-dff5-4e1a-bd71-8ab82969bc7b/application

**Skills:** AWS, Kubernetes, GCP, Okta, Datadog, CI/CD, Infrastructure as Code, Identity and Access Management, SIEM, Cloud Security, Security Operations, Terraform, Jenkins, Cloudflare, Scripting, Programming

> The Senior II Security Engineer owns platform security across AWS, Kubernetes, and GCP, focusing on detection, alerting, and incident response. This role involves leading security initiatives, evolving monitoring capabilities using Datadog, and strengthening identity and access security while collaborating with cros...

## Job description

WE POWER PEOPLE’S PROGRESS.

At Preply, we’re all about creating life-changing learning experiences. We help people discover the magic of the perfect tutor, craft a personalised learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled - and it’s creating real impact.

We’ve just reached unicorn status with a $150M Series D, accelerating our vision to transform education through human-led, AI-enhanced learning. Today, 100,000+ tutors teach 90+ languages to learners in 180 countries - and we’re only getting started. As a category-defining company, we’re shaping what the future of learning looks like at global scale.

Every Preply lesson sparks change, fuels ambition, and drives progress that matters. Joining Preply means helping define the future of education at global scale, and building something that truly matters for millions of people, every day.

Meet the team!

The Security team partners across the company to help Preply grow safely and sustainably. We are responsible for platform security, application and product security, security operations, and incident response. We work closely with SRE, Data teams, Engineering teams, and our GRC function to make security practical, measurable, and scalable.

We work in small teams, which means you’ll have high ownership, real influence on technical decisions, and the opportunity to drive meaningful improvements across the company. We promote self-direction, strong collaboration, and a culture where trust and clear communication matter.

We’ve reached 90%+ adoption of AI coding tools across engineering, and we’re now moving towards more autonomous, AI-Augmented development at scale. At Preply, engineers have direct access to the best tools available, with the freedom to use them fully and experiment as they build.

We have diverse technical challenges that will allow you to develop your skills across the stack - sometimes we write about them in our Engineering Blog https://medium.com/preply-engineering! Please, also visit our Tech Radar https://tech-radar.preply.com/?_ga=2.72086362.855941533.1670530539-1369760810.1670530539 and our YouTube channel https://www.youtube.com/@Preplyengineering-ie3bb to learn more about the technologies we use at Preply!

What you’ll be doing:

- Own platform security across AWS, Kubernetes, and GCP, with a strong focus on detection, alerting, and incident response readiness
- Lead key platform security initiatives end-to-end, from problem definition through rollout and iteration
- Act as a strong technical voice in defining how platform security is designed, implemented, and operated at Preply
- Evolve our monitoring from “we have a SIEM” to a detection and response capability that is effective, trusted, and actionable
- Work hands-on with our current tooling, including Datadog as our SIEM, Okta as our primary IdP, and a range of SaaS platforms
- Drive cross-functional platform security initiatives from problem definition to production rollout, partnering with SRE, Data, Engineering, and GRC
- Strengthen cloud and platform security across AWS and Kubernetes, with expanding scope in GCP, through practical guardrails, secure patterns, and automation
- Improve the robustness of access to internal infrastructure, including identity, privileged access, and auditability
- Improve security of Kubernetes deployments, including cluster and workload security, policy enforcement, and secure workload identity patterns
- Mature detection and response capability using Datadog
- Improve log coverage and data quality (cloud, Kubernetes, CI/CD, identity, and key SaaS)
- Build and tune actionable detections with clear severity, ownership, and expected frequency
- Reduce noise through correlation, deduplication, enrichment, and continuous tuning
- Establish repeatable triage workflows and clear escalation paths, being part of the Security on-call rotations
- Create investigation playbooks and runbooks so alerts can be handled consistently and quickly
- Partner with Data teams to improve monitoring for suspicious activity and sensitive access patterns, with an emphasis on practical, high-signal alerting
- Improve secrets management and reduce exposure risk across CI/CD and runtime
- Build security automation that makes the secure path the easy path for engineers

What you need to succeed:

- Strong experience securing cloud and platform environments, especially AWS and Kubernetes, and the ability to extend that security approach into GCP
- Hands-on experience driving and delivering technical security initiatives end-to-end in production environments
- Strong understanding of the software development lifecycle, and comfort working with CI/CD and infrastructure as code
- Practical experience improving identity and access security, with strong familiarity with Okta event monitoring and identity-focused detection patterns
- Experience building or maturing security operations capability, especially turning SIEM inputs into reliable operational outcomes (triage, runbooks, tuning, and measurable improvement)
- Experience improving logging coverage and signal quality, and building detections that are actionable rather than noisy (experience with Datadog SIEM is a plus)
- AI Expertise: You're a forefront user of Agentic AI. You're able to bring hands-on experience and start influencing the team beyond code generation; reserving judgment for architecture, business logic, and security, using AI as a thought partner and being able to set up quality gates and safety nets to enhance existing engineering workflows and propose AI-native alternatives.
- Strong collaboration skills and the ability to influence decisions across SRE, Data, Engineering, and GRC
- Business-oriented mindset and comfort making cost-benefit tradeoffs
- Strong communication skills. Minimum C1 English level.
- Willingness to participate in on-call rotations and partner effectively with SRE during incidents.

Nice to have:

- Terraform and infrastructure as code at scale
- Jenkins hardening and CI/CD supply chain security controls
- Cloudflare security controls (WAF, bot mitigation, edge protections)
- Scripting or programming for automation and tooling
- Incident response experience in cloud-native environments (AWS and Kubernetes)

Why you’ll love it at Preply:

- An open, collaborative, dynamic and diverse culture;
- A generous monthly allowance for lessons on Preply.com http://Preply.com, Learning & Development budget and time off for your self-development;
- A competitive financial package with equity, leave allowance and health insurance;
- Not in Barcelona? We offer an attractive relocation package to join us in our Preply Barcelona Hub
- Access to free mental health support platforms;
- Access to Gympass-partnered wellness and gym centers throughout Spain to promote and support well-being and physical health;
- The opportunity to unlock the potential of learners and tutors through language learning and teaching in 175 countries (and counting!).

## OUR PRINCIPLES

- Care to change the world - We are passionate about our work and care deeply about its impact to be life changing.
- We do it for learners - For both Preply and tutors, learners are why we do what we do. Every day we focus on empowering tutors to deliver an exceptional learning experience.
- Keep perfecting - To create an outstanding customer experience, we focus on simplicity, smoothness, and enjoyment, continually perfecting it as every detail matters.
- Now is the time - In a fast-paced world, it matters how quickly we act. Now is the time to make great things happen.
- Disciplined execution - What makes us disciplined is the excellence in our execution. We set clear goals, focus on what matters, and utilize our resources efficiently.
- Dive deep - We leverage business acumen and curiosity to investigate disparities between numbers and stories, unlocking meaningful insights to guide our decisions.
- Growth mindset - We proactively seek growth opportunities and believe today's best performance becomes tomorrow's starting point. We humbly embrace feedback and learn from setbacks.
- Raise the bar - We raise our performance standards continuously, alongside each new hire and promotion. We build diverse and high-performing teams that can make a real difference.
- Challenge, disagree and commit - We value open and candid communication, even when we don’t fully agree. We speak our minds, challenge when necessary, and fully commit to decisions once made.
- One Preply - We prioritize collaboration, inclusion, and the success of our team over personal ambitions. Together, we support and celebrate each other's progress.

DIVERSITY, EQUITY, AND INCLUSION

Preply.com http://Preply.com is committed to creating an inclusive environment where people of diverse backgrounds can thrive. We believe that the presence of different opinions and viewpoints is a key ingredient for our success as a multicultural Ed-Tech company. That means that Preply will consider all applications for employment without regard to race, color, religion, gender identity or expression, sexual orientation, national origin, disability, age or veteran status.

## About Preply

## Company Overview
- **One-liner**: Preply is a human-led, AI-enabled online language learning marketplace that connects over 100,000 tutors with millions of learners worldwide for personalized 1-on-1 lessons.
- **Entity Type**: Private (Series D – unicorn, $1.2B valuation as of January 2026)
- **Headquarters**: Brookline, Massachusetts, United States (with global hubs in Barcelona, London, Kyiv, and New York)
- **Founded**: 2012
- **Founders**: Kirill Bigai (CEO) and Dmytro Voloshyn (CTO)

## Core Business
- **Primary industry**: Language learning / EdTech
- **Target customers**: B2C (individual learners) and B2B (corporate language training via Preply Business); primarily B2C but growing enterprise segment.
- **Mission or purpose statement**: "Power people’s progress" – combining the flexibility of online learning with personalized lessons from expert tutors to create life‑changing experiences.

## Products & Services
- **Preply Marketplace**: A platform where learners book 1‑on‑1 live lessons with tutors teaching 90+ languages and 120+ subjects. Tutors manage scheduling, payments, and an integrated video classroom.
- **Preply Business**: Corporate language training solution for companies to upskill employees, offering tailored programs and reporting.
- **AI‑Powered Tools**: New‑generation AI‑enhanced tutoring features (including AI‑generated content and adaptive learning tools) designed to supplement human‑led instruction. The company also provides enterprise OpenAI licenses to employees.

## Market Standing
- **Valuation/Market Cap**: $1.2 billion (post‑money after January 2026 Series D) – becoming a unicorn.
- **Key Metric**: Over $100K total funding? Actually total disclosed funding is ~$150M+ (Series A, B, C) plus the $150M Series D. Annual revenue is not publicly available (private company). Key growth metric: 100,000+ tutors across 180 countries.
- **Notable Investors/Partners**: WestCap (led Series D), Owl Ventures, Horizon Capital, Hoxton Ventures, Full In Partners, Diligent Capital Partners, Point Nine Capital (led Seed round).
- **Growth Signals**: 
  - Unicorn status reached in Jan 2026.
  - B2B segment “Preply Business” growing.
  - Completed first employee tender offer in May 2026 to provide early liquidity.
  - CEO Kirill Bigai named EY Entrepreneur Of The Year® 2026 New England Finalist.
  - 700+ employees globally; 62+ nationalities represented.

## Competitive Advantages
- **Network effects**: Large two‑sided marketplace with 100K+ tutors and millions of learners creates a strong moat in the $115B global language learning market.
- **Human‑led + AI‑enabled**: Differentiates from purely self‑study apps (e.g., Duolingo) by combining live human interaction with AI‑powered personalization.
- **Global reach**: Tutors from 180 countries teaching 90+ languages, enabling learners to find native speakers for almost any language.
- **Trust & quality**: Focus on tutor quality and learner progress, with internal engagement surveys showing 86% of employees proud to work at Preply.

## Strategic Focus
- **AI integration**: Deepen AI capabilities to enhance tutoring (content generation, adaptive learning paths) while keeping human interaction central.
- **B2B expansion**: Grow Preply Business as a key revenue driver for corporate language training.
- **Global hub growth**: Strengthen presence in existing hubs (Barcelona, London, Kyiv, New York) and expand into new markets.
- **Talent & culture**: Continue building a people‑first culture with employee liquidity events and strong engagement scores.

## Why Work Here
- **Culture**: Guided by five “Preply principles” (Ambition, Keep Perfecting, Care to Change the World, etc.). 86% of employees are proud to work at Preply (2025 survey); 84% would recommend it as a great place to work.
- **Work model**: Hybrid working model (flexible remote/in‑office). Main office in Barcelona with hubs in New York, London, and Kyiv.
- **Perks**: Competitive salaries, stock options, L&D days, monthly Preply platform allowance, wellness benefit, health insurance, flexible compensation program, after‑work gatherings, offsite events, enterprise OpenAI licenses.
- **Hiring process**: 4 stages – TA chat, interviews with hiring team (may include tech test), a final task (case study / peer programming / deep technical discussion), and a Culture Champion interview.
- **Global team**: 62+ nationalities and 700+ employees, offering a diverse, collaborative environment.

## Sources
1. [Preply Careers](https://preply.com/en/careers)
2. [Preply About Us](https://preply.com/en/about-us)
3. [Preply Homepage](https://preply.com/)
4. [CB Insights Company Profile](https://www.cbinsights.com/company/preply)
5. [Preply LinkedIn](https://www.linkedin.com/company/preply)

## Other roles at Preply

- [Senior Brand Designer](https://feeny.ai/job/senior-brand-designer-preply-barcelona-44jjsn5v1jgp) — Barcelona, Spain
- [Senior Data Analyst - B2B](https://feeny.ai/job/senior-data-analyst-b2b-preply-barcelona-tn0mzxdyr1e9) — Barcelona, Spain
- [Senior II Full-Stack Engineer (back-end heavy)](https://feeny.ai/job/senior-ii-full-stack-engineer-back-end-heavy-preply-london-0tcnk20meddg) — London, United Kingdom
- [Senior Principal Applied AI Scientist](https://feeny.ai/job/senior-principal-applied-ai-scientist-preply-london-4v2mryfa1vns) — London, United Kingdom
- [Senior Principal Applied AI Scientist](https://feeny.ai/job/senior-principal-applied-ai-scientist-preply-barcelona-3qjbjcsa1310) — Barcelona, Spain
- [Senior Manager, Tutor Brand](https://feeny.ai/job/senior-manager-tutor-brand-preply-barcelona-zg798vmyg1xz) — Barcelona, Spain
- [Senior Manager, Tutor Brand](https://feeny.ai/job/senior-manager-tutor-brand-preply-london-npkkyvk4zhcf) — London, United Kingdom
- [Video Editor](https://feeny.ai/job/video-editor-preply-barcelona-929wjhnf19fv) — Barcelona, Spain
- [SEM Manager](https://feeny.ai/job/sem-manager-preply-barcelona-r966qm31vcr5) — Barcelona, Spain
- [Staff Data Scientist](https://feeny.ai/job/staff-data-scientist-preply-london-w1nbvqtq0ey8) — London, United Kingdom