Client side software Work, Jobs (with Salaries)

Software Developer
Veriscope.Digital —Remote
- £15 - £30 an hour
- Part-time
- Remote
- Computer Science
- JavaScript
- APIs
Quick apply
Junior Full Stack Software Engineer (Remote first)
Spencer West —Birmingham
- Remote
- SQL
- Bachelor's degree
- No degree
- Work from home
Senior Software Engineer, Client Group
Winton Group —London
- Master's degree
- AWS
- Bachelor's degree
Trainee Frontend Web Developer
Haus of HR —Olney
- £25,000 - £30,000 a year
- Full-time
- JavaScript
- APIs
- Communication skills
- Annual leave
Quick apply
9d
Client Solutions & Analytics: Quantitative Research Analyst – London
PIMCO —London
- Full-time
- English
- Master's degree
- AI
- Employee assistance programme
- Employee discount
1d
Front-End Angular Software Engineer
Trimble —London
- Full-time
- Hybrid work
- Computer Science
- Engineering
- AWS
2d
Data Analyst - Permanent
RAPP —London
- Doctoral degree
- Master's degree
- SQL
Quick apply
Client Solutions & Analytics: Analyst/ Associate - London
PIMCO —London
- Full-time
- Microsoft Excel
- English
- Analysis skills
Junior Software Developer (Artificial Intelligence)
Oxford Economics —Remote
- Full-time
- Remote
- Azure
- Computer Science
- Engineering
- Employee assistance programme
Agile Business Analyst (IT)
CalMac Ferries Limited —Gourock
- £70,000 a year
- Full-time
- Hybrid work
- Azure
- Computer Science
- Bachelor's degree
- Annual leave
10d
Customer Success Manager UK&I – Accountancy SaaS
Silverfin —London
- £46,750 - £63,250 a year
- Sales
- Project management
- Accounting
Software Engineer - Emerging Platform Infrastructure & Automation
Apple —London
- Computer Science
- Master's degree
- Bachelor's degree
1d
Software Development Engineer in Test (SDET)
Gallagher Benefit Services —London
- Azure
- SQL
- JavaScript
- Employee stock purchase plan
- Life insurance
11d
Software Engineer (Back End)
TP ICAP —London
- Full-time
- Java
- AWS
- APIs
Senior Software Engineer - FTC
Public Library of Science —Manchester
- £65,000 - £142,000 a year
- Remote
- Computer Science
- Bachelor's degree
- Machine learning
- Annual leave
Account Executive
Commusoft —London
- £40,000 a year
- Full-time
- Hybrid work
- Sales
- Communication skills
Senior Software Engineer - Buy-Side
Bloomberg —London
- Doctoral degree
- Computer Science
- Engineering
Digital Marketing Executive
FPZERO Simulators —Sandy
- From £15 an hour
- Part-time
- English
- Driving
- In-person
- Free parking
- Flexible schedule
Quick apply
Software Engineer
AlliedCrowds —London
- DevOps
- Data analysis skills
- AWS
Microsoft Dynamics 365 Developer, Power Pages
Scrumconnect Consulting —London
- £450 - £475 a day
- CRM software
- Azure
- JavaScript

I want to receive the latest job alerts for client side software

By signing in to your account, you agree to SimplyHired's Terms of Service and consent to our Cookie and Privacy Policy.

Software Developer

Veriscope.Digital
Remote

Quick apply

Job details

Part-time
£15 - £30 an hour

Qualifications

Computer Science
CSS
React
iOS
Git
JavaScript
GitHub
APIs
UI
HTML

Full job description

Job Overview

Content Sieve is an AI-powered Chrome extension (Manifest V3) that filters web content by topic across any website, using OpenAI's API via a Cloudflare Worker proxy to intelligently distinguish genuine topic matches from false positives. The extension is live on the Chrome Web Store with a working free/premium tier model and Stripe subscription billing already in place. We are looking for a developer to help extend its capabilities, improve filtering accuracy, and build toward a more polished product.

Responsibilities

Develop, test, and deploy updates to a Manifest V3 Chrome extension using vanilla JavaScript, working across content scripts, background service workers, and the popup UI.
Improve and extend the core AI filtering logic, including the keyword-first gate and dual-model routing between GPT-4.1-nano (free tier) and GPT-4.1-mini (premium tier).
Maintain and enhance the Cloudflare Worker back end, including the /api/check-content, /api/validate-key, /api/checkout, and /api/stripe-webhook endpoints.
Work with Cloudflare KV namespaces for licence key storage and free-tier daily cap enforcement.
Extend or improve the Stripe integration, including checkout session creation, webhook handling, and licence key generation on successful payment.
Improve DOM traversal logic in the content script for more reliable card detection across deeply nested React and Next.js page structures.
Maintain and improve the popup UI, built in HTML, CSS, and vanilla JavaScript.
Manage session caching logic and client-side rate limiting (token bucket) to minimise unnecessary AI calls.
Use Git and GitHub for version control throughout.
Document architectural decisions and deployment steps clearly for ongoing reference.
Help build the Android and iOS version

Experience

Demonstrable experience building Chrome extensions using Manifest V3, including content scripts, background service workers, and the Chrome messaging API.
Strong proficiency in vanilla JavaScript, including asynchronous patterns, chrome.storage.sync, and browser extension APIs.
Hands-on experience with Cloudflare Workers and Wrangler, including KV namespace management and secret configuration.
Familiarity with the OpenAI Chat Completions API and prompt design for classification tasks.
Experience integrating Stripe, including checkout sessions, webhook verification (HMAC-SHA256), and subscription lifecycle events.
Solid understanding of HTML5 and CSS3 for extension popup and options UI work.
Version control with Git and GitHub is essential.
Experience with DOM traversal and content manipulation across diverse page structures, including React and Next.js sites, is a strong advantage.
Prior experience shipping a published browser extension is strongly preferred.
A Computer Science or related degree preferable but not compulsory.

Before You Apply

We ask that all candidates install Content Sieve from the Chrome Web Store or www.veriscope.digital and spend a few minutes using it before submitting an application. We're looking for a brief professional assessment alongside your application: what works well, what doesn't, and where you see the clearest opportunities for improvement — whether in filtering accuracy, UI, performance, or architecture.

This isn't a test with a right answer. It tells us how you think about an existing codebase and a real product, and it means any conversation we have from the first message is grounded in direct experience of what you'd be working on.

The extension is free to install. Find it at the Chrome Web Store or www.Veriscope.Digital

Pay: £15.00-£30.00 per hour

Application question(s):

Take a look at Content Sieve, what improvements would you suggest to the product?

Work Location: Remote

Quick apply

Refine Your Search

client side software jobs

Software Developer

Junior Full Stack Software Engineer (Remote first)

Senior Software Engineer, Client Group

Trainee Frontend Web Developer

Client Solutions & Analytics: Quantitative Research Analyst – London

Front-End Angular Software Engineer

Data Analyst - Permanent

Client Solutions & Analytics: Analyst/ Associate - London

Junior Software Developer (Artificial Intelligence)

Agile Business Analyst (IT)

Customer Success Manager UK&I – Accountancy SaaS

Software Engineer - Emerging Platform Infrastructure & Automation

Software Development Engineer in Test (SDET)

Software Engineer (Back End)

Senior Software Engineer - FTC

Account Executive

Senior Software Engineer - Buy-Side

Digital Marketing Executive

Software Engineer

Microsoft Dynamics 365 Developer, Power Pages

I want to receive the latest job alerts for client side software

Related Searches

Explore jobs in more locations

Jobseeker tools

Employer Tools

Browse

Stay Connected