Freelance Backend Engineers in EnglandFreelance Backend Engineers in England
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Ali Shan's avatar
Ali Shan
proLondon, UK
Full-Stack & AI Dev | TypeScript, Next.js, React, Node
$25k+
Earned
4x
Hired
5.0
Rating
65
Followers
Full-Stack & AI Dev | TypeScript, Next.js, React, Node
Cover image for Full Stack Web App Build
Full Stack Web App Build
1
13
Cover image for Payment and Backend Architecture
Payment and Backend Architecture
0
18
Cover image for API Backend for Heavy Concurrent Load
API Backend for Heavy Concurrent Load
0
12
Cover image for Predictive Analytics Platform & ML Service
Predictive Analytics Platform & ML Service
0
9
Backend Engineer(7)
Rania Benotman's avatar
Rania Benotman
proLondon, UK
Founder · Full-Stack & AI Engineer · 15+ Projects
$1k+
Earned
1x
Hired
5.0
Rating
46
Followers
Founder · Full-Stack & AI Engineer · 15+ Projects
Cover image for Excited to share some of
Excited to share some of the backend work I've been doing lately with Supabase! 🚀 Here's a look at what went into building a production-ready backend from scratch: 🗄️ Database Schema Design Designed a relational schema with multiple interconnected tables: profiles, notes, reminders, conflicts, and a dedicated user_keys table for encryption key management. Every table has proper foreign key relationships, timestamps, and nullable/non-nullable constraints enforced at the DB level. 🔒 Row Level Security (RLS) Every single table has RLS enabled with two policies: users can only access their own rows, and anonymous access is blocked entirely. No exceptions. Security is enforced at the database layer, not just the application layer. 🔑 Auth & Email Flows Set up Supabase Auth with email + OAuth support, including full PKCE flow for secure token exchange. Configured deep link redirects for email confirmation and password reset flows, all tested end to end. ⚡ Edge Functions Built and deployed multiple Supabase Edge Functions handling AI processing pipelines, including JWT validation at the top of every function before any processing begins. The OpenAI API key lives exclusively in Supabase secrets, never in the app or any config file. 🔄 Merge Pipeline Built a follow-up note merge pipeline as an Edge Function. New facts are appended to existing profiles, duplicates are detected and skipped, conflicts are logged, and resolved reminders are handled gracefully. 📦 Migrations All schema changes go through versioned migration files under source control. No manual dashboard changes. CI/CD triggers migrations automatically on merge to main. 🔐 Encryption Architecture Client-side AES-GCM encryption via CryptoKit. Plaintext never sits in the database. Encryption keys are stored in a dedicated RLS-scoped table, fetched after login, and held in memory only for the session duration. Still a lot more to share about this project. Excited to talk about it publicly when it launches! 👀
5
5
1.3K
Cover image for School Management ERP — Laravel · Zoom · HR & Finance
School Management ERP — Laravel · Zoom · HR & Finance
2
3
Cover image for Alweqaya — B2B & B2C E-commerce · Flutter · RBAC
Alweqaya — B2B & B2C E-commerce · Flutter · RBAC
2
3
Cover image for NeptuneBlue AI SaaS — RAG · Multi-Tenant · FastAPI
NeptuneBlue AI SaaS — RAG · Multi-Tenant · FastAPI
2
15
Backend Engineer(3)
Muhammad Talal's avatar
Muhammad Talal
Manchester, UK
Building next-gen Interactive experiences
$5k+
Earned
1x
Hired
17
Followers
Building next-gen Interactive experiences
Cover image for Built a Collab Viewer style
Built a Collab Viewer style toolset inside the UE5.5 project and made it reliable for dedicated-server multiplayer. I migrated/merged the Collab architecture into a my project (GameMode, PlayerController, Pawns, PlayerState), fixed reference/compile issues, and wired the tools to our custom UI for both First Person and Orbit pawns. Key work included replication/RPC cleanup so tools work over a server, plus integrating tools like annotations (text, paint and erase), transform, Datasmith runtime loading (replicated so one client’s load appears for others), measuring/dimension tool (place/edit/delete and unit switching), and bookmarks (place, list UI and teleport with rotation). A network-ready collaboration layer in custom with UI-driven workflows and server-validated replication, ready for packaging/testing and ongoing polish
1
1
181
Cover image for Revolutionize Unreal Engine Workflow: Efficient Terrain Impo...
Terrain Importer for Unreal Engine (Python + Custom UE Plugin) I built an end-to-end terrain importer that converts raw terrain dataset files into fully usable Unreal Engine landscapes automatically. Before this, importing and setting up ~45 landscape tiles in Unreal could take ~60 minutes and was easy to mess up. I wanted a fast, repeatable pipeline. It allows: Python reads the dataset and generates Unreal-ready .r16 heightmaps Python automation creates a new Unreal project and imports the heightmaps Custom UE plugin (C++) builds Landscapes from the imported heightmaps and places them correctly in the level Foliage: automatically placed across the terrain The workflow reduce from ~60 minutes to ~5 minutes for ~45 landscapes (~12× faster) and made it deterministic and repeatable ideal when terrain needs frequent regeneration.
1
3
210
Cover image for I recently worked on a multiplayer MMA-style project in Unre...
I recently worked on a multiplayer MMA-style project in Unreal Engine (C++), focusing on server-authoritative gameplay, replication/network flow, backend/API integration, and performance-minded polish. Loved the challenge of making combat feel fair and responsive under latency.
20
315
Cover image for I worked on Sand Bullet (Unity 3D) a top-down shooter indie ...
I worked on Sand Bullet (Unity 3D) a top-down shooter indie title and owned the full development cycle from early concept to final deployment. I built the core tech including enemy AI, a flexible weapon system, and in-game power-ups, then pushed it through release on Steam, where it picked up real user traction and feedback that helped shape polish and iteration.
2
20
373
Backend Engineer(3)
Abdulhamid Sonaike's avatar
Abdulhamid Sonaike
London, UK
full stack engineer with 2 yrs experience in AI applications
5.0
Rating
17
Followers
full stack engineer with 2 yrs experience in AI applications
Cover image for Sumwise AI
Sumwise AI
1
12
Cover image for OPSIS AI: Revolutionizing Storyboard Creation
OPSIS AI: Revolutionizing Storyboard Creation
1
13
Cover image for CSSPify Chrome Extension Development
CSSPify Chrome Extension Development
1
8
Cover image for DeepCoder Coding Assistant
DeepCoder Coding Assistant
1
2
Backend Engineer(2)
Enoch Sagini's avatar
Enoch Sagini
London, UK
Senior Dev & Data Analyst · Laravel · Python · Next.js
New to Contra
Senior Dev & Data Analyst · Laravel · Python · Next.js
Cover image for Transform Your Data with Sagini AI: Instant Analytics & Insi...
Just shipped Sagini AI Analytics — sagini.net (http://sagini.net) Drop in a CSV. Get back charts, anomaly detection, AI-generated insights, and a shareable report. No SQL. No analyst. No waiting. This is what I built because I was tired of clients paying thousands for dashboards that take weeks to deliver. Sagini AI does it in seconds. Stack: FastAPI · Python · Pandas · Plotly · SQLite · Vanilla JS If you need a custom version of this — internal analytics tool, automated reporting, AI integrated into your existing data pipeline — that's exactly what I do. Live at sagini.net (http://sagini.net). More at sagini.me (http://sagini.me). DM me and let's build something.
1
60
Cover image for Just shipped something I've
Just shipped something I've been building for a while. If you've ever started a Laravel project and spent the first two days just setting up JWT auth, user roles, protected routes and a basic API structure — this is for you. The Laravel JWT API Starter Kit gives you all of that out of the box. Register returns 201. Login returns 200 with a token. Every endpoint tested before release. It also includes posts CRUD with likes, comments, replies and view tracking. Zero config SQLite database. Clean structure that's easy to extend. Get it here: https://contra.com/iamsagini Pairs with Devboard, the Next.js dashboard I also just shipped. Buy both and have a complete full-stack application running in under an hour.
2
3
186
Cover image for Built a production financial management
Built a production financial management system for a real 6-member savings group managing over £1,900 in collective funds. Includes real-time dashboards, loan tracking, interest calculations, and member savings analytics. Stack: Laravel · MySQL.
1
58
Cover image for Engage & Share: Explore Our Dynamic Q&A Social Network Now
A Q&A and social networking platform where people can share ideas, ask questions, and engage freely across topic hubs like Tech, Careers, Money, and more — featuring feeds, voting, comments, reposts, and bookmarks. Built and actively being expanded.
2
86
Backend Engineer(3)
Aidarous Sheikh's avatar
Aidarous Sheikh
Southampton, UK
UX/UI Designer & Developer (No-Code & Full Stack)
UX/UI Designer & Developer (No-Code & Full Stack)
Cover image for Your AI universe, organized.
Your AI universe, organized.
0
20
Cover image for Where Founders and Funders Finally Meet.
Where Founders and Funders Finally Meet.
0
20
Cover image for Modern Web Refresh for Longview Leverage
Modern Web Refresh for Longview Leverage
0
19
Cover image for Norbiton Kitchen Website Design
Norbiton Kitchen Website Design
0
7
Backend Engineer(2)
Teodor Moldoveanu's avatar
Teodor Moldoveanu
London, UK
Software engineer skilled in C#, web dev, and AI solutions.
Software engineer skilled in C#, web dev, and AI solutions.
Cover image for CSharpTeoMan911/2_Large_Networks_With___DHCP___VOIP___TELNET___…
CSharpTeoMan911/2_Large_Networks_With___DHCP___VOIP___TELNET___…
0
4
Cover image for GitHub - CSharpTeoMan911/ThetaFTP
GitHub - CSharpTeoMan911/ThetaFTP
0
5
Cover image for BerrySonar: DIY LIDAR System Development
BerrySonar: DIY LIDAR System Development
0
12
Cover image for Eva the AI Assistant
Eva the AI Assistant
0
14
Backend Engineer(2)