Freelance Software Engineers in NoidaFreelance Software Engineers in Noida
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AKASH VASHISHTHA's avatar
AKASH VASHISHTHA
proDelhi, India
Versatile Fullstack Engineer | Web & Mobile Expert
$50k+
Earned
5x
Hired
5.0
Rating
109
Followers
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Versatile Fullstack Engineer | Web & Mobile Expert
Cover image for Realm - Social Media Platform for Music Producers and Artists
Realm - Social Media Platform for Music Producers and Artists
1
125
Cover image for Madklubben Online Reservation Modernization
Madklubben Online Reservation Modernization
1
20
Cover image for Bento Station's Commission-Free Delivery Suite
Bento Station's Commission-Free Delivery Suite
1
33
Cover image for Billing Crow
Billing Crow
1
71
Software Engineer(4)
Wahid Ali's avatar
Wahid Ali
proGhaziabad, India
Full Stack Developer | MVPs, SaaS & Dashboards for Startups
$10k+
Earned
4x
Hired
4.9
Rating
22
Followers
Full Stack Developer | MVPs, SaaS & Dashboards for Startups
Cover image for AI Search Optimization Platform
AI Search Optimization Platform
1
20
Cover image for Mobile App Development Company Website
Mobile App Development Company Website
1
2
Cover image for Dashboard Modernization in Legacy Codebase
Dashboard Modernization in Legacy Codebase
1
2
Cover image for DevOps Pipeline for Technical Writing Course
DevOps Pipeline for Technical Writing Course
1
4
Software Engineer(9)
Rishi Bajpai's avatar
Rishi Bajpai
Noida, India
Building MVPs for startup founders with clean UX in a week.
1x
Hired
5.0
Rating
60
Followers
Building MVPs for startup founders with clean UX in a week.
Cover image for Regenix - Healthcare System Modernization for Regenix
Regenix - Healthcare System Modernization for Regenix
0
2
Cover image for IndiaPharmaHub - B2B Pharmaceutical Supplier Directory
IndiaPharmaHub - B2B Pharmaceutical Supplier Directory
1
6
Cover image for Reqwest - Designing an Efficient API Testing Platform
Reqwest - Designing an Efficient API Testing Platform
3
3
Cover image for SpongebobLabs - AI Research Lab Website Development
SpongebobLabs - AI Research Lab Website Development
1
6
Software Engineer(2)
Ritik Goyal's avatar
Ritik Goyal
Delhi, India
Python & Django developer for web apps and APIs
New to Contra
Python & Django developer for web apps and APIs
Cover image for Spent an afternoon this week
Spent an afternoon this week chasing down why a client's order dashboard took around 2.5s to load. Turned out the page was firing 300+ database queries. Classic N+1 problem. Every order in the loop was making its own separate trip to the DB just to grab the customer and product. One line fixed it. select_related() tells Django to pull the related rows in a single JOIN instead of querying them one at a time. 312 queries down to 3. Page load went from 2.4s to 0.08s. The annoying part is this never shows up on small datasets in dev. It only bites you in production once the table grows. So now I always check the query count in Django Debug Toolbar before shipping any list view. What's the worst N+1 you've run into?
0
73
Cover image for Hit a classic Django trap
Hit a classic Django trap this week and figured it's worth sharing since so many people are running into it now. I was adding an LLM feature to a Django app. The AI call takes a few seconds, so naturally I made the view async so it doesn't block a worker while waiting. Wrote the async view, called the ORM like I always do, and boom: SynchronousOnlyOperation: You cannot call this from an async context. Turns out Django's ORM can't just be called normally inside async code. The classic sync API isn't safe in an event loop, so Django protects it and throws this error instead. The fix is simpler than most people think. Since Django 4.1 the ORM has async versions of everything, same names with an "a" prefix. So objects.get() becomes await objects.aget(), create() becomes acreate(), save() becomes asave(). For loops over querysets, async for works directly. And for old sync code or third party libraries you can't change, wrap them with sync_to_async(). Why this matters right now: everyone is bolting AI features onto Django apps, and LLM calls are exactly the slow I/O that async is made for. Which means a lot of devs who never touched async Django are suddenly hitting this error for the first time. One honest caveat: transactions still don't fully work in async mode, so if you need atomic blocks, keep that path sync and wrap it. Anyone else made the jump to async views yet, or still happily on WSGI?
0
64
Cover image for An AI-driven trading engine that
An AI-driven trading engine that analyzes 200-DMA breakouts and real-time market sentiment to generate long/short recommendations. It scans 1,500+ NSE stocks in under 2 seconds and uses generative AI to build option strategies, delivering event-driven trade signals end-to-end. I built the full Django backend, async APIs, and the signal-generation logic. Accomplishments and responsibilities: Built an AI-driven trading engine analyzing 200-DMA breakouts and market sentiment, generating long/short signals with ~70% directional accuracy — outperforming baseline strategies by 35%; Integrated generative-AI insights for automated option-strategy creation (spreads, straddles, condors), improving Sharpe ratio by 1.6× and cutting manual analysis time by 60%; Developed a Django backend with async APIs scanning 1,500+ NSE stocks in under 2 seconds, achieving 40% lower latency with event-driven alerts.
0
62
Cover image for An AI-powered news platform that
An AI-powered news platform that delivers concise, real-time AI-industry updates to 2,500+ active users. It scrapes and aggregates 500+ sources daily, removes duplicates, and uses generative-AI summarization to cut reading time significantly while surfacing the most relevant stories. I built the backend responsible for scraping, deduplication, and the LLM summarization pipeline.
0
63
Software Engineer(6)
Anil Singh's avatar
Anil Singh
Delhi, India
Full Stack Engineer building Fast Websites and Web Apps
26
Followers
Full Stack Engineer building Fast Websites and Web Apps
Cover image for E-Commerce Platform – Shopsphere
E-Commerce Platform – Shopsphere
1
5
Cover image for Startup Discovery & Pitch Platform
Startup Discovery & Pitch Platform
1
5
Cover image for The 108 Peaks – Website Development
The 108 Peaks – Website Development
1
10
Cover image for Modern SaaS Website UI – Xora
Modern SaaS Website UI – Xora
1
5
Software Engineer(2)