Neeraj Singh Β· TheNeerajSec

Building apps & tools people use every day.

Cyber Security Developer and former SDET. I ship React Native Android apps on Google Play, Astro and React web tools, and take on freelance mobile and web work.

30+

Freelance projects

Sprints, fixes, releases, retainers & NDAs

8+

Products shipped

Play Store apps, web tools, desktop & OSS

4+

Live Play listings

React Native Android under TheNeerajSec

Activity feedΒ· illustrative
Tightened SSB Buddy offline cache edge case2h ago
Pushed TheClosedTest Convex schema tweak4h ago
Expo Icon Generator β€” canvas export regression check6h ago
HaryanaBus dark-mode contrast pass9h ago
Sarkari Notice results screen empty state12h ago
Decoder tool keyboard shortcut QA1d ago
RDT README install steps clarified1d ago
TheHiddenNotes landing copy trim2d ago
Portfolio iframe CSP note for marketing sites2d ago
SSB Buddy Clerk session refresh review3d ago
Closed-test proof upload flow copy3d ago
Wazuh dashboard widget spike (XOC)4d ago
GitHub Actions lint gate on tool PR5d ago
Email extractor edge case (pasted tables)6d ago
React Native bundle size quick audit1w ago
CEH notes refresh β€” cloud IAM section1w ago
Postman collection for internal API smoke2w ago
Play Console policy checklist update2w ago
Tightened SSB Buddy offline cache edge case2h ago
Pushed TheClosedTest Convex schema tweak4h ago
Expo Icon Generator β€” canvas export regression check6h ago
HaryanaBus dark-mode contrast pass9h ago
Sarkari Notice results screen empty state12h ago
Decoder tool keyboard shortcut QA1d ago
RDT README install steps clarified1d ago
TheHiddenNotes landing copy trim2d ago
Portfolio iframe CSP note for marketing sites2d ago
SSB Buddy Clerk session refresh review3d ago
Closed-test proof upload flow copy3d ago
Wazuh dashboard widget spike (XOC)4d ago
GitHub Actions lint gate on tool PR5d ago
Email extractor edge case (pasted tables)6d ago
React Native bundle size quick audit1w ago
CEH notes refresh β€” cloud IAM section1w ago
Postman collection for internal API smoke2w ago
Play Console policy checklist update2w ago

Projects & products

Use the arrows to browse screenshots. For SSB Buddy and TheClosedTest, use Android / Website for Play shots vs marketing site. TheHiddenNotes embeds a live preview; Expo Icon Generator shows a screenshot β€” open the tool to use it live.

Project

SSB interview prep

SSB Buddy

Screening, psychology modules, GTO, lecturettes, PIQ, rankings β€” practice offline with a focused UI.

TheNeerajSecΒ·2024 β€” PresentΒ·Product & engineeringΒ·500+ Play Store downloads

React NativeAndroidClerkInstantDBEducation
Google Play
SSB Buddy screenshot 1 of 6

Project

Govt jobs & results

Sarkari Notice

Job alerts, exam results, admit cards and recruitment updates from official portals β€” fast and easy to browse.

TheNeerajSecΒ·2024 β€” PresentΒ·Product & engineering

React NativeAndroidMaterialREST
Google Play
Sarkari Notice screenshot 1 of 5

Project

Roadways timetables

HaryanaBus Roadways Timetable

Haryana Roadways routes, schedules, and timings with light/dark mode β€” built for commuters and low-end devices.

TheNeerajSecΒ·2024 β€” PresentΒ·Product & engineering

React NativeAndroidOffline-firstMaps data
Google Play
HaryanaBus Roadways Timetable screenshot 1 of 5

Project

12 testers Β· 14 days

12 Testers β€” TheClosedTest

Community mutual testing so indie devs can finish Google Play closed testing with real Android users β€” free, policy-minded, no bots.

TheNeerajSecΒ·2024 β€” PresentΒ·Product & engineeringΒ·600+ Play Store downloads

React NativeAndroidConvexClerkPlay Console
Google Play
12 Testers β€” TheClosedTest screenshot 1 of 5

Project

RAM dump forensics Β· Windows

Raw Dump Tool (RDT)

Tauri desktop app (Rust + React) for digital forensics: capture volatile memory to a dump file through a simple GUI, built on WinPmem.

Open sourceΒ·2024 β€” PresentΒ·Author & maintainer

TauriRustReactForensicsWinPmem
View on GitHub
Raw Dump Tool (RDT)
Raw Dump Tool (RDT) screenshot 1 of 1

Desktop app (screenshot)

Project

Discreet notes Β· screen sharing

TheHiddenNotes

React and Tailwind marketing site for a privacy-first notes experience: stay prepared in interviews and meetings without exposing your notes when sharing your screen.

TheNeerajSecΒ·2025 β€” PresentΒ·Product & engineering

ReactTailwind CSSWebPrivacy
Visit site
https://thehiddennotes.neerajlovecyber.com/

Embedded preview of the tool page

Project

Expo & React Native icons

Expo Icon Generator

Upload artwork, preview, and export the icon sizes you need for Expo β€” without leaving the browser.

Web toolΒ·2024 β€” PresentΒ·Full-stack tool

AstroReactCanvasExpoDX
Open tool
Expo Icon Generator
Expo Icon Generator screenshot 1 of 1

Web tool (screenshot β€” open to use live)

Experience β€” roles

Cyber security engineering and test automation; details below mirror rΓ©sumΓ©-style entries.

xIoTz

Cyber Security Developer

Contributed to xIoTz eXtended Operation Centre (XOC), a unified cyber assurance platform integrating NOC, SOC, TOC, CSPM, and NGVA. Automated threat detection and response workflows; integrated Wazuh for security monitoring.

Frugal Testing

SDET Intern

Automated web and API testing with Java, Selenium, and Postman. Improved CI/CD with GitHub Actions. Used JIRA, Trello, and Allure for reporting and defect tracking.

Freelance & consulting.

Representative engagements below (some under NDA). If you are hiring or need a build partner, say hello β€” same channels as the hero: WhatsApp, rΓ©sumΓ© (PDF), or Contact.

Start a conversation on WhatsApp Contact form

Open for new engagements

I take on selected remote work: React Native Android apps, Astro or React sites, CI/CD and release hygiene, API integrations, and small security- or forensics-flavoured tools. Fixed-scope sprints, milestones, or light ongoing support β€” happy to align on NDAs and timezone overlap (IST).

RemoteReact NativeAstroCI/CDContracts

React Native stability & Play Store launch support

Hardened navigation and offline edge cases, cleaned up analytics events, and tightened store listing copy, privacy text, and release checklist so the team could ship a confident production build.

React NativePlay ConsoleRelease

Monitoring hooks & dashboard wiring

Integrated third-party alert webhooks into an internal React dashboard, normalised payloads for consistent UI states, and added GitHub Actions workflows for lint and preview deploys.

ReactRESTGitHub Actions

Cipher decoders & CTF-style browser utilities

Public encoder/decoder tools on this domain β€” keyboard-first flows, static hosting, shareable URLs for classrooms and puzzle communities.

TypeScriptAstroUXOpen web

Performance pass & low-end device tuning

Profiled list and map screens, reduced unnecessary re-renders, deferred heavy work off the UI thread, and documented a short β€œperformance budget” for future features.

React NativePerformanceAndroid

Web & decoder tools

A growing collection on this site β€” shareable links for collaborators and clients.

Certifications

CEH (2023) and eJPT β€” listed for reference; verification on request.

Certified Ethical Hacker (CEH)

Junior Penetration Tester (eJPT)

More write-ups on Projects