Freelance Security EngineersFreelance Security Engineers
ProjectsPeople
Abubakar Chan's avatar
Abubakar Chan
proLahore, Pakistan
AI Automation Engineer | Full-Stack Apps & Integrations
$50k+
Earned
66x
Hired
4.9
Rating
137
Followers
ANYTHING_EXPERT

Expert

REPLIT_EXPERT

Expert

+2
AI Automation Engineer | Full-Stack Apps & Integrations
Cover image for Provider Portal for Healthcare MSO
Provider Portal for Healthcare MSO
3
39
Cover image for Magnai | UK Public Affairs
Magnai | UK Public Affairs
5
78
Cover image for Humoni - secure housing in under 72 hours
Humoni - secure housing in under 72 hours
6
132
Cover image for Wellbeing Wizard AI
Wellbeing Wizard AI
8
186
Security Engineer(1)
Raymond Asogwa's avatar
Raymond Asogwa
proCyprus
Ship your SaaS MVP in weeks - web, mobile, payments.
$25k+
Earned
14x
Hired
4.9
Rating
101
Followers
BOLT_EXPERT

Expert

BOLT_MENTOR_EXPERT

Mentor

+1
Ship your SaaS MVP in weeks - web, mobile, payments.
Cover image for Unexposed – The Document Vault That Can't See Your Documents
Unexposed – The Document Vault That Can't See Your Documents
0
32
Cover image for Introducing Realm - Your *full-stack
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
Cover image for Togethr – Turn Community Voice into Product Momentum
Togethr – Turn Community Voice into Product Momentum
0
138
Cover image for Levra . Intelligent Form Builder for Modern Team
Levra . Intelligent Form Builder for Modern Team
1
50
Security Engineer(1)
Jason Smyth's avatar
Jason Smyth
proCopthorne, UK
Cyber expert specialising in Azure Security Services.
$10k+
Earned
4x
Hired
5.0
Rating
22
Followers
Cyber expert specialising in Azure Security Services.
Cover image for Microsoft Sentinel & Splunk ES Engineer for up to 6 months
Microsoft Sentinel & Splunk ES Engineer for up to 6 months
0
13
Cover image for Extended Interview Process for CrowdStrike SIEM Specialist
Extended Interview Process for CrowdStrike SIEM Specialist
0
12
Cover image for Setting up and optimising Microsoft Sentinel
Setting up and optimising Microsoft Sentinel
1
49
Cover image for Configure SIEM Security Operation using Microsoft Sentinel
Configure SIEM Security Operation using Microsoft Sentinel
0
40
Security Engineer(1)
Himanshu Kumar's avatar
Himanshu Kumar
proBengaluru, India
Helping founders turn Replit MVPs into secure, scalable SaaS
$1k+
Earned
12x
Hired
5.0
Rating
40
Followers
REPLIT_EXPERT

Expert

Helping founders turn Replit MVPs into secure, scalable SaaS
Cover image for Bug Bounty Hunting & Web App Security Research
Bug Bounty Hunting & Web App Security Research
0
13
Cover image for Secure Auth & Multi-Tenant System for Industrial SaaS
Secure Auth & Multi-Tenant System for Industrial SaaS
0
18
Cover image for Workflow Automation for Industrial Services
Workflow Automation for Industrial Services
2
41
Cover image for Real-time Booking Automation Platform
Real-time Booking Automation Platform
1
26
Security Engineer(2)
Safa Souli's avatar
Safa Souli
Tunis, Tunisia
UI/UX Designer & Developer
5.0
Rating
15
Followers
UI/UX Designer & Developer
Cover image for Curatech – Website Design & Development
Curatech – Website Design & Development
1
6
Cover image for SecureIVAI
SecureIVAI
0
4
Cover image for Genesis Robotics: Transforming Productivity
Genesis Robotics: Transforming Productivity
1
6
Cover image for Qatar University - Redesgin
Qatar University - Redesgin
1
262
Security Engineer(3)
Guillaume Strohecker's avatar
Guillaume Strohecker
London, UK
AI Agent Security Auditor | Fast, evidence-based reviews
New to Contra
AI Agent Security Auditor | Fast, evidence-based reviews
Cover image for I recently completed a security
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
Cover image for Mobile Security & Privacy Hardening Security
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
Cover image for API Rate Limiting & Abuse
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
Cover image for Authentication & Password Reset Hardening Security
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)
Saif Sghaier's avatar
Saif Sghaier
Tunis, Tunisia
Smart Contract Audit for Secure Results
Smart Contract Audit for Secure Results
Cover image for Audit Report: BEING Project
Audit Report: BEING Project
0
19
Cover image for Audit Report: BlindDoge Project
Audit Report: BlindDoge Project
0
10
Cover image for Audit Report: Viku Project
Audit Report: Viku Project
0
10
Placeholder project card media
View more →
Security Engineer(3)