Freelance Security Engineers
Freelance Security Engineers
Sign Up
Post a job
Sign Up
Log In
Filters
1
Projects
People
Abubakar Chan
pro
Lahore, Pakistan
AI Automation Engineer | Full-Stack Apps & Integrations
$50k+
Earned
66x
Hired
4.9
Rating
137
Followers
Expert
Expert
+2
Follow
Message
AI Automation Engineer | Full-Stack Apps & Integrations
3
Provider Portal for Healthcare MSO
3
39
5
Magnai | UK Public Affairs
5
78
6
Humoni - secure housing in under 72 hours
6
132
8
Wellbeing Wizard AI
8
186
Security Engineer
(1)
Follow
Message
Raymond Asogwa
pro
Cyprus
Ship your SaaS MVP in weeks - web, mobile, payments.
$25k+
Earned
14x
Hired
4.9
Rating
101
Followers
Expert
Mentor
+1
Follow
Message
Ship your SaaS MVP in weeks - web, mobile, payments.
0
Unexposed – The Document Vault That Can't See Your Documents
0
32
10
Introducing Realm - Your *full-stack Saas Template* for launching your next software product in a day. Available on Contra: Check it out (https://contra.com/products/c7HPzB4W-realm-convex-tan-stack-saa-s-starter) Realm gives you all the plumbing you need so you can focus on your core product feature. It comes with: ✅ Better-auth - Authentication with Org, Member, Roles, Permissions and Invitation. ✅ Convex - Real-time backend with database, file storage . ✅ Stripe and Polar - Payment with lifecycle management for subscription - Choose your preference. ✅ Autosend - Transactional and Marketing email with email templates and webhook setup. ✅ S3 Seam - File storage for private or public file upload to any S3 storage provider of choice - S3, R2, Tigris, etc. ✅ Tanstack Start - Modern web framework - Optimized for Speed, SEO and perfomance. ✅ Dinachi UI - Prebuilt 40+ accessible React UI Component. Live demo at: https://dub.sh/realm-launch
9
10
449
0
Togethr – Turn Community Voice into Product Momentum
0
138
1
Levra . Intelligent Form Builder for Modern Team
1
50
Security Engineer
(1)
Follow
Message
Jason Smyth
pro
Copthorne, UK
Cyber expert specialising in Azure Security Services.
$10k+
Earned
4x
Hired
5.0
Rating
22
Followers
Follow
Message
Cyber expert specialising in Azure Security Services.
0
Microsoft Sentinel & Splunk ES Engineer for up to 6 months
0
13
0
Extended Interview Process for CrowdStrike SIEM Specialist
0
12
1
Setting up and optimising Microsoft Sentinel
1
49
0
Configure SIEM Security Operation using Microsoft Sentinel
0
40
Security Engineer
(1)
Follow
Message
Himanshu Kumar
pro
Bengaluru, India
Helping founders turn Replit MVPs into secure, scalable SaaS
$1k+
Earned
12x
Hired
5.0
Rating
40
Followers
Expert
Follow
Message
Helping founders turn Replit MVPs into secure, scalable SaaS
0
Bug Bounty Hunting & Web App Security Research
0
13
0
Secure Auth & Multi-Tenant System for Industrial SaaS
0
18
2
Workflow Automation for Industrial Services
2
41
1
Real-time Booking Automation Platform
1
26
Security Engineer
(2)
Follow
Message
Safa Souli
Tunis, Tunisia
UI/UX Designer & Developer
5.0
Rating
15
Followers
Follow
Message
UI/UX Designer & Developer
1
Curatech – Website Design & Development
1
6
0
SecureIVAI
0
4
1
Genesis Robotics: Transforming Productivity
1
6
1
Qatar University - Redesgin
1
262
Security Engineer
(3)
Follow
Message
Dragos Moruz
Timișoara, Romania
Seasoned cybersecurity leader.
5.0
Rating
4
Followers
Follow
Message
Seasoned cybersecurity leader.
2
Firewall Configuration & Rule Review
2
24
1
Security Testing for iOS and Android Mobile Applications
1
17
1
Automated Vulnerability Scanning and Security Assessment
1
13
1
Free Vulnerability Scanning Demo - Instant Security Insight
1
31
Security Engineer
(3)
Follow
Message
Guillaume Strohecker
London, UK
AI Agent Security Auditor | Fast, evidence-based reviews
New to Contra
Follow
Message
AI Agent Security Auditor | Fast, evidence-based reviews
0
I recently completed a security hardening pass on an AI-enabled mobile product. The most important issues weren’t exotic vulnerabilities. They were practical deployment risks: password reset race conditions missing abuse controls weak retention guarantees mobile backup exposure logging and CI gaps Each confirmed finding was fixed and backed by regression tests before the security baseline was marked PASS. One lesson stood out: security reviews are most useful when they produce evidence and actionable fixes, not just scanner output. I’m now offering focused 24-hour AI Agent Security Mini-Audits for founders and small teams. https://contra.com/s/2Z7YgYXU-ai-agent-security-mini-audit?r=guillaume_strohecker_6m06cchc
0
21
0
Mobile Security & Privacy Hardening Security hardening focused on mobile platform protections and privacy-preserving behavior. Android application backup was disabled to reduce risk around locally stored session material, and release builds were hardened to block cleartext traffic while keeping local development support isolated to debug/profile builds. The review also verified that BLE remains anonymous, one-sided interest stays private, precise coordinates are not exposed publicly, and Social Heat remains aggregate and threshold-gated.
0
10
0
API Rate Limiting & Abuse Protection Security hardening focused on API abuse resistance. Rate limits were added to registration, login, password-reset request and confirmation, Click Intent creation, and public Heat reads. The limiter was designed with bounded state, explicit email normalization, case-sensitive reset-token fingerprints, expiry sweeping, and fail-closed behavior under saturation. Regression tests verified throttling behavior and recovery.
0
15
0
Authentication & Password Reset Hardening Security hardening focused on authentication and account recovery. The work included stronger scrypt password hashing, legacy-hash migration, login timing protections, atomic password-reset token consumption, and session revocation after reset. PostgreSQL concurrency and regression tests verified that a reset token can only be successfully consumed once and that authentication behavior remains safe under failure conditions.
0
22
Security Engineer
(5)
Follow
Message
Saif Sghaier
Tunis, Tunisia
Smart Contract Audit for Secure Results
Follow
Message
Smart Contract Audit for Secure Results
0
Audit Report: BEING Project
0
19
0
Audit Report: BlindDoge Project
0
10
0
Audit Report: Viku Project
0
10
View more →
Security Engineer
(3)
Follow
Message
Explore people