Hire a freelance full-stack developer
Web apps, MCP servers & security patching, shipped by one engineer — no agency overhead.
Hire a freelance full-stack developer with 8 years of backend-heavy experience — React and Next.js on the front, Node.js, Python and AWS behind it, plus MCP servers, AI and Stripe integrations, and same-week patching for critical Next.js, Node.js and PHP CVEs.
- 100+ five-star client reviews
- Fixed quote within 48 hours
- You own the code, no lock-in
- You talk directly to the engineer
Tech stack
- TypeScript
- React
- Next.js
- Node.js
- Python
- Django
- AWS
- DynamoDB
- Docker
- MongoDB
- WebSockets
- Stripe
- OpenAI
- Claude
- MCP
★★★★★ 100+ five-star reviews
From freelance clients, over several years
“Delivered exactly what was needed, with revisions until it was right — clear communication the whole way through.”
“Picked up an existing codebase we hadn't touched in a while and shipped fixes fast, with a walkthrough of every change.”
“Handled a complex, evolving project and delivered a dependable base we've kept building on since.”
What I build
Services
Focused on custom web application development - end to end, from architecture to deployment.
Fixed-price gigs
Clear scope, clear price
Well-defined jobs from $20, each with set delivery times and revisions. Pick a package and start in a day.
Free tools
Calculators and checkers for founders
Free, no signup, and most run entirely in your browser.
AI cost calculator
What an AI feature costs per request and per user, across models, and what to charge to keep your margin.
Open the tool →Free toolPayment fee calculator
What you keep from each sale on Stripe, Paddle, Lemon Squeezy, Polar, Dodo Payments and Gumroad.
Open the tool →Free toolLaunch readiness check
Share cards, noindex and robots.txt mistakes, sitemap, HTTPS and broken links, with copy-paste fixes.
Open the tool →Free toolAPI key and secret scanner
Find leaked keys in code, .env files or logs, then get an ordered rotation checklist. Nothing is uploaded.
Open the tool →Free toolJSON formatter and repair
Format, validate and auto-repair broken JSON, with tree and table views. Runs in your browser.
Open the tool →Free toolDependency CVE checker
Paste package.json or composer.json and see which known CVEs affect you, in your browser.
Open the tool →How it works
A straightforward process
01
Discovery call
A free call to understand what you're building and why.
02
Scoped proposal
A clear plan with a fixed scope and quote — no surprises later.
03
Build, with check-ins
Regular progress updates as the work happens, not silence until delivery.
04
Handoff & support
Clean handoff, documentation, and support after launch.
Case studies
A closer look at how the work gets done
Client names are withheld under NDA, but here's the actual thinking behind a few projects - not just the outcome.
Automating device control for a hardware-dependent workflow
- Challenge
- A client needed to remotely command an external physical device as part of their workflow, packaged so non-technical staff could run it without touching code.
- Approach
- Built the device-commanding logic in Node.js, then wrapped it into a standalone executable alongside a lightweight web app for triggering and monitoring commands. Because testing depended on the client's physical hardware, the work proceeded through a series of live sessions to validate behavior against the real device rather than guessing at specs.
- Outcome
- Delivered a working executable and companion web app that reliably issued commands to the device, with the extra hardware-testing time built into the plan upfront.
Turning a manual email workflow into an automated pipeline
- Challenge
- A client was manually pulling attachments out of an inbox to hand off to different downstream systems - slow, error-prone, and eating into a small team's time every day.
- Approach
- Built a scheduled job that pulled matching attachments into cloud storage on a timer, filtered out anything irrelevant, and exposed the processed results through a lightweight API keyed to whoever was requesting it.
- Outcome
- Replaced a daily manual task with an automated pipeline the client's team no longer has to think about, with results available on demand through the API.
Building a foundation for an ongoing R&D platform
- Challenge
- A client needed a working base platform to support the next phases of an R&D initiative - not a one-off script, but something built to be extended over time.
- Approach
- Architected the initial platform with extensibility as the priority, keeping communication tight through regular updates so direction stayed aligned even as requirements were still taking shape.
- Outcome
- Delivered a stable base the client is still building on for later phases of the same R&D work.
Guides
Practical guides from real builds
Tested code, checkers and calculators — same-week Next.js, Node.js and PHP security fixes, plus MCP servers, Stripe and AWS.
10 min read
Node2Shell: Node.js Brotli decoder vulnerability (CVE-2026-111497), check and patch
An out-of-bounds write in Node.js's Brotli decoder can lead to remote code execution. Fixed versions, a checker that detects the fix in the binary itself, tests showing that Express 5, fetch() and axios decode outside Brotli data, and safe stop-gaps.
6 min read
October 2026 security updates: Next.js, Node.js and PHP in one place
Next.js, Node.js and PHP all shipped critical fixes within a week, and GitLab/Ruby followed. One table of fixed versions, a two-minute check for each, what to patch first, and the dates coming next.
11 min read
PHP2Shell (CVE-2026-109618, CVE-2026-109619): check and patch your PHP
Two critical PHP flaws allow unauthenticated remote code execution, and attacks began before the patch. Now on CISA's KEV list. Fixed versions, a tested checker (including Ubuntu backports), patch steps per setup, log checks based on CISA's rule, and what to do if you cannot update today.
8 min read
OpenSSH password-auth bypass on Alpine (musl): are you affected, and the 10.6p2 fix
OpenSSH 10.6p2 (5 Nov 2026) ships a critical workaround for a password-authentication bypass on musl-libc systems like Alpine when sshd runs without PAM. glibc systems — Debian, Ubuntu, your usual VPS — aren't affected. How to tell if you're exposed, and the one-line fix.
8 min read
APT flaw CVE-2026-109518: patch your Debian and Ubuntu servers before the next apt install
A man-in-the-middle on your network path can swap an apt package after it is verified and run code as root (CVE-2026-109518). It hits Debian 12+ and Ubuntu 22.04+ by default. How to check your apt version and the retry setting, and patch in a few minutes.
8 min read
Upgraded GitLab and still vulnerable? The Ruby patch behind CVE-2026-97229
A critical RCE in GitLab's regex engine (CVE-2026-97229, CVSS 10.0) comes from Ruby's Onigmo library. Alpine upgraded GitLab and was still attacked, because its image used standard Ruby without the patch. How to tell whether your GitLab is still exposed, and the fix in order.
Client reviews
What people say after working together
Paraphrased from real client reviews. Client names are withheld to respect their privacy.
The original reviews are public on Fiverr.
“Needed a small automation script to fit into an existing build pipeline. It was delivered within days, with setup instructions and a walkthrough video included.”
“Brought in to fix a widget that wasn't recording events correctly. Diagnosed the issue, resolved it, and stayed responsive on calls throughout.”
“A hardware-integration job with an external device turned out more complex than scoped. Stuck with it through extra planning calls until it worked reliably.”
“Gave us a strong base platform to build the next phase of our R&D work on top of. Communication stayed good even as the timeline shifted.”
“Needed attachments pulled from an inbox into cloud storage on a schedule, then served through an API based on who was asking. Delivered cleanly, explained clearly.”
“An ongoing working relationship across several months and orders — full-stack work handled reliably each time, always available when needed.”
“Jumped into a codebase built by someone else, understood it quickly, and shipped the requested changes without breaking anything else.”
“Contributed core functionality to an NFT marketplace build, working across a varied toolset and picking up new pieces of the stack quickly.”
How I build
The practices behind the work
Not just claims — this is what's actually in place on every project.
Version control & code review
Every project lives in Git from day one. Meaningful changes get reviewed before merging, even on solo work — no code lands unchecked.
Automated testing
Critical logic is covered by automated tests before handoff, not verified by manual clicking alone.
CI/CD
Deployments are automated where the project calls for it, so shipping isn't a manual, error-prone step.
Monitoring & observability
Production systems are wired with logging and monitoring — issues get caught before a client has to report them.
Documentation on handoff
Every delivery includes setup docs, and a walkthrough video where useful — not just a code drop.
Regular check-ins
Progress updates happen throughout the build, not just at the deadline.
How you're protected
The guarantee
Unlimited revisions
Work continues until the delivered result matches the agreed spec. That's the guarantee, not a negotiation.
You own the code
Full IP transfer on final payment. No licensing fees, no lock-in, no asking permission to use what you paid for.
Post-launch bug-fix window
Bugs in delivered work get fixed at no extra cost for 30 days after handoff.
If it's not working out
Either side can end the engagement early. You pay only for work completed - no penalty, no drama.
Questions
Frequently asked
What is a freelance full-stack developer?+
An independent engineer who builds both the front end and the back end of a product, for example React or Next.js on the screen and Node.js, Python and AWS behind it, so you work with one person instead of coordinating several.
How do I hire a freelance full-stack developer?+
Book a free scoping call and describe the project. A fixed, scoped quote follows within 48 hours, and work starts only after you approve it.
What does a freelance full-stack developer cost?+
Most work is priced as a fixed quote after scoping rather than by the hour. Custom projects typically start at $1,000, fixed-price packages start from $20, and ongoing work can be arranged as a monthly retainer.
Who owns the code and IP after the project?+
You do, fully, once final payment clears. No licensing fees, no lock-in.
What if I'm not happy with the delivered work?+
Revisions continue until the work matches the agreed spec — that's the guarantee, not something you have to fight for.
How do scope changes get handled mid-project?+
Anything outside the original scope gets discussed and quoted separately before work starts on it — no surprise charges.
What if the project isn't working out?+
Either of us can end the engagement early. You pay only for work completed, nothing more.
Do you sign NDAs?+
Yes — happy to sign one before any project details are shared.
How do payments typically work?+
Usually split into milestones tied to agreed deliverables, rather than one lump sum upfront.
What's a typical turnaround time?+
Depends entirely on scope — timelines get set during the scoping call, not guessed at beforehand.
Do you work with non-technical founders?+
Yes — updates are in plain English, with no assumption you already know the stack.
Engagement models
How we can work together
Every project is scoped individually - here's how engagements are typically structured.
Custom projects typically start at $1,000 - final quotes depend on scope. Smaller, fixed-price packages start from $20.
Fixed-Scope Project
Best for a well-defined build. You get a fixed quote after scoping - so you know the cost before work starts.
Free Scoping Call
Not sure what you need yet? Start with a free call. A scoped, fixed quote follows within 48 hours.
Retainer / Ongoing
Best for continuous work - a monthly arrangement for ongoing development, fixes, and new features.
About
8 years of software engineering experience
CodeWares is built on real, hands-on experience - not a fresh start.
Aman Singh is the freelance full-stack engineer behind CodeWares - building custom web apps, APIs, and AWS infrastructure for clients worldwide. With a background in financial accounting (B.Com), payments and billing products - Stripe subscriptions, webhooks, fintech flows - are a natural fit.
More about Aman →Freelance developer
Delivered 100+ projects for international clients: Node.js automation, backend APIs, real-time/WebSocket systems, and full-stack web apps. Consistently 5-star rated, with multiple long-term repeat clients.
Software engineer, digital product consultancy
Collaborated within an engineering team on code reviews, debugging, and architecture. Architected and built scalable APIs, and worked directly with customers to gather requirements and troubleshoot production issues.
Production SaaS engineering, AI space
Backend-heavy work, largely as sole engineer on core product areas - improving reliability of content-processing workflows, building automation, and shipping AI-driven features. Deep hands-on AWS: API Gateway, CloudWatch, CloudEvents, and monitoring.
Get in touch
Tell me about your project
Share a few details and I'll get back to you to schedule a free scoping call.