Start from where you are.
I am MD Morsalin, a contract software engineer. Every service below has a written scope, a fixed price agreed before work starts and a proper handover. I work remotely on US Eastern hours, for startups, small businesses and agencies.
Where are you starting from?
Discovery & Technical Planning
Turn an idea into a written plan: what to build, what to buy, which stack, and a realistic estimate before you commit a budget.
- Discovery Sprintfrom $390
- AI Opportunity Assessmentfrom $480
- Second Opinion on a Quotefrom $130
Software Architecture
Design the system and data model, or review the one you have, so it stays simple, secure and ready to grow.
- System Architecture & Data Modelfrom $1,280
- Architecture Reviewfrom $640
Product & API Design
API contracts, specs, developer docs and AI agent interfaces your team or partners can build against.
- Technical Spec & API Designfrom $650
- Partner API & Developer Docsfrom $780
- AI Agent Interface (MCP Server)from $960
Custom Software Development
MVPs, SaaS and web apps, backend APIs, AI features and subscription billing, built with tests and handed over properly.
- MVP Buildfrom $3,900
- SaaS & Web Appsfrom $780
- Backend APIsfrom $1,300
- AI Features & RAGfrom $1,600
- Subscription Billingfrom $910
API Integration & Automation
Connect APIs, sync data between the tools you run, automate recurring work and add single sign-on.
- API & Webhook Integrationfrom $520
- Business System Syncfrom $780
- Workflow Automationfrom $520
- Login & SSOfrom $520
Testing & Security
Readiness checks, security reviews, accessibility audits, fixes and automated tests for the flows your business depends on.
- Pre-launch Readiness Checkfrom $520
- Security Audit & Hardeningfrom $650
- Remediation Sprintfrom $650
- Critical Flow Testsfrom $780
- Accessibility Audit & Fixfrom $520
Deployment & DevOps
Containers, CI/CD, hardened production servers and reproducible environments on single or split servers.
- Dockerize Your Appfrom $390
- CI/CD Pipelinefrom $390
- Production Server Setupfrom $390
- Environment as Codefrom $910
- Email Authentication Setupfrom $130
Cloud & Server Migration
Move hosts, leave Heroku, trim an AWS bill or change databases, with a backup, a rollback plan and a planned window.
- Hosting Migrationfrom $390
- Heroku/PaaS Exitfrom $780
- AWS to VPS Migrationfrom $1,560
- Database Migrationfrom $260
Monitoring & Observability
Uptime checks, metrics and alerts that reach you first, and backups with a restore that has actually been tested.
- Monitoring & Alertingfrom $260
- Backup & Disaster Recoveryfrom $390
Troubleshooting & Bug Fixing
Same-working-day urgent fixes, capped-cost bug fixing and cleanup after a compromise, in US Eastern hours.
- Urgent Fixfrom $190
- Bug Fixingfrom $195
- Hacked App Cleanupfrom $520
Maintenance & Support
Monthly care plans, prepaid hours and a part-time tech lead, with clear limits and predictable cost.
- Monthly Care Planfrom $195
- Prepaid Hours Blockfrom $325
- Fractional Tech Leadfrom $480
Optimization & Scaling
Find what makes it slow or costly, fix it, and split the app and database when one server is no longer enough.
- Performance Audit & Fixfrom $650
- Cloud Cost Reviewfrom $390
- Scale-up: Split to Multi-nodefrom $1,300
Application Modernization
Laravel upgrades, end-of-life runtime upgrades, legacy PHP to Laravel and containerizing older apps.
- Laravel Upgradefrom $390
- End-of-Life Runtime Upgradefrom $390
- Legacy PHP → Laravelfrom $1,300
- Containerize a Legacy Appfrom $650
Project Rescue & Takeover
Find out what you own, get an honest assessment, then a phased plan to stabilize and finish, including apps built with AI or no-code tools.
- Codebase Assessmentfrom $520
- Rescue & Finishfrom $1,300
- AI-Built App Rescuefrom $390
- Ownership & Access Checkfrom $195
Not ready for a project? Start with a fixed-price first step.
Each one ends with a written report and a fixed quote. The full fee is credited toward a follow-on project of $1,000 or more that you approve within 30 days.
Discovery Sprint
A Discovery Sprint is a fixed-price, written plan for a software idea or a big new feature, made before you commit a build budget. It covers feasibility, stack, build vs buy and an estimate range. It is for founders and small teams. Prices start from $390 ($300 founding), and Starter takes about a week.
AI Opportunity Assessment
A fixed-price, written review of where an LLM or vision model would really help your business or product, and where it shouldn’t be used. Each idea gets a feasibility, risk and cost view, plus a ranked shortlist. It is for small businesses and SaaS teams. Prices start from $480 ($360 founding), and Starter takes about a week.
Second Opinion on a Quote
A new service: a fixed-price, written review of a developer or agency proposal before you sign. It covers scope gaps, risky assumptions, whether the price and timeline are realistic, who owns the code and accounts, and the questions to ask. From $130 ($100 founding), within 3 working days.
Architecture Review
A fixed-price, written review of an existing system: how it’s built, where it will break as usage grows, and a prioritized fix list with effort estimates. It is for SaaS founders and small teams with an app already in production. Prices start from $640 ($480 founding), and the Starter review takes about a week.
Pre-launch Readiness Check
A fixed-price review of your app and server before real users arrive. I check security basics, backups, deploys, config, error handling and monitoring, then send a written report with a prioritized fix list and effort estimates. From $520 ($400 founding), delivered in about one week. Email me your stack and launch date to start.
Security Audit & Hardening
A written-scope security review of one web app and its server, including apps built with Lovable, Bolt or Cursor on Supabase. I check access control, auth, secrets, database rules and server setup, then report findings with fixes and effort. From $650 ($500 founding) for the review, about 1–2 weeks. Email your stack to start.
Accessibility Audit & Fix
A new service: a fixed-price accessibility audit of your web app’s key pages and flows against WCAG 2.2 AA, with automated checks, a keyboard and screen-reader pass, and a ranked fix list, followed by fixes quoted from the audit. Audit from $520 ($400 founding), about 1–2 weeks.
Cloud Cost Review
A fixed-price, read-only review of your cloud bill for small teams on AWS, Google Cloud, Azure or DigitalOcean-style hosts. You get an itemized map of what you pay for, what looks oversized or unused, and what changing each item would involve. From $390 ($300 founding), about one week. Email your provider and monthly spend.
Codebase Assessment
A fixed-price, written review of your existing app: code quality, security basics, tests, dependencies, hosting and what it would take to finish, fix or upgrade it. For founders and agencies taking over or rescuing a project. From $520 ($400 founding), about 1–2 weeks. The fee is credited toward follow-on work.
Ownership & Access Check
A new service: I find where your domain, DNS, hosting, email, code and app accounts live, whose name each one is in and who can log in, then give you a one-page map and a plan to move everything into your name. From $195 ($150 founding), about a week. For owners whose developer left or went quiet.
Where my case studies are strongest.
System Architecture & Data Model
I design the architecture and data model for a new product or a major rebuild: components, database schema, background jobs, access rules and deployment shape, written down so any competent developer can build from it. It is for startups and small teams. Prices start from $1,280 ($960 founding), and a design takes 2–4 weeks.
Partner API & Developer Docs
I get your API ready for outside developers: API keys, rate limits, versioning, signed webhooks, and a docs site partners can build against without emailing you. It is for SaaS teams opening their product to partners, marketplaces or customers. Prices start from $780 ($600 founding), and the work takes about 2–5 weeks.
SaaS & Web Apps
I add features and modules to Laravel and Vue/Nuxt web apps, or build new ones. It’s for SaaS founders and agencies who need a senior developer for a defined piece of work. From $780 ($600 founding) for a feature, typically 2–4 weeks, fixed scope. Email me what you need and your stack versions.
Backend APIs
I build backend APIs in Go or Python: documented endpoints, authentication, background jobs, tests and a Docker image ready to deploy. It’s for startups and agencies that need a reliable service behind their app. From $1,300 ($1,000 founding) for up to 10 endpoints, about 3–4 weeks. Email me what the API must do.
AI Features & RAG
I add AI features to working products: LLM features with checked output, vision and document extraction, and answers grounded in your own documents (RAG) with citations. It’s for small teams who want AI that is tested, not a demo. From $1,600 ($1,200 founding) for one feature, about 3–4 weeks. You pay model costs directly.
API & Webhook Integration
I connect your app to other services through their APIs and webhooks, and build outgoing webhooks for your own customers. Every integration handles retries, duplicates and outages without losing or double-counting data. From $520 ($400 founding) for one API in one direction, 1–2 weeks. Send me the two systems and what should move.
Critical Flow Tests
I write automated tests for the flows that must never break, such as signup, login, checkout and billing, and run them in your CI on every push. From $780 ($600 founding) for up to 3 flows, in 2–3 weeks. A good first step before an upgrade or refactor. Email your stack and flows to start.
Dockerize Your App
I package your app, database and workers into Docker images with a Compose file, so it runs the same on a laptop, in CI and on a server. From $390 ($300 founding), delivered in about a week. Built by the maintainer of five public Docker images. Email your stack and current hosting to start.
Production Server Setup
I set up a secure production server for your app on the provider you choose: firewall, SSH keys, TLS, reverse proxy, database, workers, backups and basic monitoring, with a runbook. From $390 ($300 founding) for one server, about a week. Single server or app/database split. Email your app and provider to start.
Backup & Disaster Recovery
I set up encrypted offsite backups of your database, uploaded files and configuration, then prove they work by restoring them into a scratch copy of your app. It’s for small SaaS teams and agencies who have never tested a restore. From $390 ($300 founding), done in 1–2 weeks. Email me your stack.
Tell me what you have.
I will point you to the right service and send a fixed quote, or the small first step that makes one possible.
Founding price: 3 of 3 spots left, until Mar 31, 2027 — one-off work, in return for a testimonial. How it works