Application Security Engineer

JOB DESCRIPTION

We work to make products and systems safe. You'll be primarily tasked with finding problems through code reviews. This position requires knowledge of Security & Hacking in application-level. Product is a global messenger service serving users all around the world, and we take safety and privacy of our customers very seriously. Members of the Security team working in Japan, Korea, Taiwan, and Thailand are collaborating globally. We are looking for people who have hacker mindset, yet understand the importance of business. We don't just look for vulnerabilities, we spend our time thinking about making our products and customers safe.
Responsibilities
Code audits, design reviews, and security assessment task
Hunting new attack vectors through research
Mitigating security vulnerabilities
Hacker mindset as defender, helping developers and securing the products

JOB REQUIREMENT

3 years of experience in application-level security testing and code auditing.
Work experience in web application security, especially -Java applications
Work experience in mobile security
Knowledge of software engineering, applied cryptography, authentication, and network security
We'd love to check your github repos and presentations in the fields of information security
Work experience in mobile security 

WHAT'S ON OFFER

Commitment 13th salary
Performances bonus + the company stock program
12 Annual Leave per year
Accidence & Healthcare Insurance
Opportunities to work with Global Team Product
Opportunity to work in other countries under a big Group
Flexible time & team building activities
Nice office to working

CONTACT

PEGASI – IT Recruitment Consultancy | Email: recruit@pegasi.com.vn | Tel: +84 28 3622 8666
We are PEGASI – IT Recruitment Consultancy in Vietnam. If you are looking for new opportunity for your career path, kindly visit our website www.pegasi.com.vn for your reference. Thank you!

Job Summary

Company Type:

Product

Technical Skills:

Security

Location:

Ho Chi Minh - Viet Nam

Working Policy:

Salary:

Negotiation

Job ID:

J00715

Status:

Close

Related Job:

Senior Signal Processing Engineer

Others - Viet Nam

Outsource

  • Python

Design and improve rPPG/TOI pipelines using RGB/IR video with motion/illumination compensation. Implement multi-stage preprocessing, denoising, and quality scoring. Examples: adaptive filtering, ICA/PCA variants, color-space transforms, skin ROI stabilization, signal confidence metrics. o Build cross-device normalization strategies and error-bounded estimators. Define biomarker-level acceptance criteria and failure modes for consumer-grade capture. Partner with iOS and ML teams to integrate algorithms into on-device or hybrid pipelines. Produce technical documentation suitable for regulatory-risk positioning and Apple review support. Benchmark report across device models, skin tones, lighting, and motion conditions. Biomarker feature specification sheet with recommended thresholds and confidence bands. A/B results showing improvements in stability, missingness, and downstream inference performance.

Negotiation

View details

Senior Mobile App Development Engineer

Others - Viet Nam

Outsource

  • iOS

Develop and enhance capture flows using TrueDepth, ARKit, AVFoundation, and CoreMotion. Convert algorithm requirements into reliable on-device data collection and frame synchronization. Create user-friendly quality control interface and capture-state instrumentation, including tasks such as lighting checks, face alignment, motion thresholds, occlusion detection, and retake prompts. Improve latency, thermal behavior, and battery usage for 10-second diagnostic-style capture. Ensure data privacy and compliance with privacy regulations in telemetry. Create technical documentation for the use of specific APIs and data handling for Apple's internal use. Build a modular capture SDK layer with feature flags and logging capabilities. Develop a cross-device performance matrix and tuning guide. Integrate deterministic quality control gates to minimize noisy biomarker outputs in the capture process.

Negotiation

View details

Senior Software Engineer, Machine Learning

Ho Chi Minh - Viet Nam

Product

  • Machine Learning

Building and maintaining high-scale ML pipelines using big data technologies (Spark, BigQuery, Delta Lake), writing reliable, testable, and maintainable production-ready code. Leveraging modern ML platforms like Vertex AI or Databricks to orchestrate workflows and optimizing models for both batch/offline training and real-time/streaming inference with a focus on low latency. Gaining a deep understanding of specific domain challenges (e.g., fraud detection, location spoofing) to engineer better features and network-level intelligence that go beyond algorithms. Championing best practices in software engineering, including CI/CD, automated testing, code reviews, and documentation to ensure ML systems are built to software engineering standards, not just research scripts. Acting as a technical lead for projects, defining milestones and ensuring on-time delivery, mentoring Data Scientists on engineering best practices, and collaborating with other engineers to integrate models into the wider platform.

Negotiation

View details