Freelance Cyber Security Jobs

opportunity

One-off legal review of contracts for a new UK security agency

I'm looking for a qualified UK solicitor to carry out a one-off review of the core documents for a newly registered London-based security contractor placement agency, before we put them into use. This is a review of existing drafts — not drafting from scratch — and not an ongoing retainer. Documents for review: Client Service Agreement (terms with clients hiring our contractors) Contractor Agreement (self-employed security contractors) Schedule of Services (per-assignment terms) Co-Founder Agreement (between the two company founders) BS 7858 vetting & application form (collects personal and criminal-record data — GDPR angle) Key areas to be checked: Self-employment status / IR35 (contractors engaged on a self-employed basis) Liability and cancellation clauses in the client agreement Data-protection / UK GDPR wording on the vetting form The co-founder agreement (equity, director appointment trigger, deadlock) As an all-female agency, confirming the correct legal basis for women-only hiring (occupational requirement and/or positive action under the Equality Act 2010) Please include in your proposal: confirmation you're a qualified UK solicitor with relevant commercial/employment experience; a fixed price for the bundle (state if priced per document or as a set); your turnaround time; and whether a short initial call is included. The full document set can be sent once we connect.

opportunity

Senior Cisco Network & Security Consultant Required

We are seeking a highly experienced Cisco-certified Network and Security Consultant to assist with a Cisco Firepower deployment and wider network troubleshooting within our production environment. This is not simply a firewall migration project. We require a consultant who can take a holistic view of the network and troubleshoot issues across switching, routing, VLANs, DHCP, VoIP/PBX connectivity, and security infrastructure. Current Environment Fortinet FortiGate 70F (existing firewall) Cisco Firepower 1010 Cisco Firepower Management Center (FMC) HP switching infrastructure TP-Link switching infrastructure VLAN-segmented network VoIP/PBX services Key Requirements The successful consultant must have: Strong hands-on Cisco Firepower (FTD) experience Strong Cisco Firepower Management Center (FMC) experience Advanced networking and troubleshooting skills Experience with routing, switching, VLANs, DHCP, NAT, QoS, and network services Experience troubleshooting VoIP/PBX-related networking issues Experience working within mixed-vendor environments Ability to perform root-cause analysis and provide practical remediation recommendations Current Issues Requiring Investigation Examples include: PBX system not obtaining an IP address on its assigned VLAN VLAN communication and segmentation issues DHCP-related issues Network traffic flow analysis and validation General network performance and connectivity troubleshooting Firewall Project Scope Review existing Fortinet configuration Assist with Fortinet to Cisco Firepower migration Review and validate firewall policies and NAT rules Support testing and cutover activities Provide best-practice recommendations for Cisco Firepower and FMC Mandatory Certifications Applicants must hold one or more of the following: CCNP Enterprise CCNP Security CCIE Enterprise Infrastructure CCIE Security Equivalent advanced Cisco certifications Please provide certification details when applying. Required Experience When responding, please include: Your Cisco certifications. Years of Cisco networking experience. Years of Cisco Firepower/FMC experience. Examples of similar projects completed. Experience with HP and/or TP-Link switching environments. Experience troubleshooting VLAN, DHCP, VoIP, and PBX-related issues. Your availability within the next 1–2 weeks. Engagement Remote initially. Potential for onsite support if required. Immediate start preferred. We are looking for a senior-level consultant capable of independently assessing the environment, identifying issues, and delivering practical solutions with minimal supervision.

opportunity

Mobile App Developer Needed — Mumvault (iOS & Android MVP)

About Mumvault: Mumvault is a dual-purpose family organisation and digital legacy app. It gives families one secure place to store all their important household information — insurance, mortgages, children's details, passwords, documents — and allows users to record messages for loved ones to receive at future life moments (18th birthdays, weddings, Christmas). We are pre-launch with a live waitlist, registered trademark and strong brand already in place. What We Need to Build (MVP): User registration, login and profile (biometric/Face ID support) Secure data vault with categorised sections (home, finances, children, vehicles, documents) Document and photo upload storage Trusted person access — user nominates someone who can access the vault under defined conditions Future message scheduler — written messages (and ideally voice/video) delivered to nominated recipients at a specified future date or life event GDPR compliant UK data storage Clean, warm UI matching our existing brand (assets provided) Ideal Tech Stack: React Native or Flutter (cross-platform iOS & Android), secure cloud backend (Firebase or AWS), end-to-end encryption. About You: Proven experience building consumer mobile apps Portfolio of live iOS/Android apps (please share links) Comfortable with security-sensitive data Clear communicator — this is a founder-led project and regular updates matter Stage & Budget: This is an early-stage startup. I am open to discussing a combination of paid development and equity for the right person. Please provide a fixed-price quote for the MVP scope above and indicate your timeline.

Web Tester needed

I need a website tested to ensure site is secure and also to ensure all URLs, page content, headings, metadata, image ALT tags, schema, seo etc and internal links and redirects are the same as the previous site. Screaming frog is ot be used. Then i would like the site checked to ensure its correctly built and best practice has been applied.

Data leak from laptop

A critical data leak originating from a laptop requires urgent remediation. I need an experienced cybersecurity specialist to investigate and remediate information leakage, identify root cause, secure vulnerable endpoints, recover compromised data where possible, and implement preventive controls and policies. Deliverables include forensic analysis, vulnerability patching, secure configuration, encryption and backup recommendations, and a concise incident report with actionable steps to prevent recurrence.

opportunity

GrowWell: A student‑centred wellbeing assessment platform

I need a developer who specialises in building professional, secure web applications to help me create GrowWell, a student‑centred wellbeing assessment and support platform for schools and colleges. GrowWell will allow organisations to register, set up their cohorts and classes, and securely onboard students using join codes with verification. Students will complete a wellbeing questionnaire, and the system will automatically generate personalised wellbeing action plans based on their responses. The platform will also include a RAG (Red/Amber/Green) rating system to help staff identify learners who may need additional support. The system will need: Multi‑tenant organisation accounts (each school/college has its own space) Secure student onboarding with join codes + verification Customisable response scales (1–5, 1–3, emoji, SEND‑friendly options) Automated scoring across eight wellbeing domains Personalised action plan generation Student dashboard with charts, history, and progress tracking Staff dashboards for classes, cohorts, and whole‑school analytics RAG‑based safeguarding alerts Reporting tools (PDF/CSV/Excel) Academic year tracking Admin panel for managing cohorts, classes, staff, and settings I already have the full questionnaire, scoring thresholds, and action‑plan content, along with a detailed product blueprint. I now need a developer (or small team) who can turn this into a working MVP and advise on the best technical approach. Experience with education platforms, multi‑tenant SaaS, secure authentication, or data dashboards would be ideal.

Need Senior Web3 Engineer for DAO Platform Development

We’re hiring some Senior Full-Stack Web3 Engineer to help develop a DAO platform using Next.js, Node.js, and Web3 technologies. Features end-to-end: - proposal/voting workflows - wallet transaction UX - backend API reliability/security - on-chain integration + data sync Stack: React, Next.js, Node.js, Blockchain, Web3, API integration, Smart Contract Can you share your experience participating in a similar project previously?

Fresh Produce E-commerce Website with Variable Weight pricing

"We are a long-established fresh produce and fine food retailer looking for a skilled web developer experienced in e-commerce with variable weight pricing. We require a flexible Shopify or WordPress solution where customers can order by approximate weight, and we adjust final charges to match actual weight. Familiarity with secure payment gateways, GDPR compliance, and intuitive, easy-to-update design is essential. If you have experience building or customizing for fresh produce retailers or similar, we’d love to hear from you. Please provide examples of relevant projects and outline how you'd ensure data security and flexibility

Web based forex trading mt5 trading robot

Seeking a web-based MT5 trading robot to integrate with broker accounts and execute live trades autonomously. The EA must implement a scalping strategy for forex and metals, prioritize low-latency execution, robust risk and money management, configurable trade parameters, and safeguards for connectivity and market anomalies. Deliverables: secure web interface for account linking, real-time trade monitoring, logging, backtesting capability, and clear deployment documentation.

Senior Blockchain/Smart Contract Engineer

Seeking a Senior Blockchain/Smart Contract Engineer to design, develop, and maintain secure, gas-efficient Solidity contracts for DeFi and blockchain protocols. Responsibilities include authoring robust smart contracts, creating automated tests with Foundry/Hardhat, performing security reviews, mitigating risks (flash loans, oracle manipulation, MEV, governance attacks), leveraging analysis tools, supporting audits and deployments, optimizing gas and storage, and documenting technical decisions. Requirements: strong Solidity/EVM expertise, Foundry/Hardhat experience, deep DeFi knowledge, security-first mindset, testing and debugging proficiency, familiarity with OpenZeppelin and upgradeable patterns, and excellent attention to detail. Nice-to-have: Rust/TypeScript, Solana/Anchor experience, formal verification or fuzzing exposure, and multi-chain familiarity. Competitive salary, benefits, flexible hours, and growth opportunities.

Woocommerce Website Development.

Professional WooCommerce website development: build a secure, responsive, and SEO-friendly online store. Tasks include theme customization, product catalog setup, payment and shipping integration, performance optimization, and basic on-page SEO. Ensure cross-device compatibility, intuitive UX, and easy admin management. Provide clean, documented code and implement recommended plugins for security and backups. Deliver testing, launch support, and brief user training to manage products and orders efficiently.

opportunity

Anchor bolts calculations

We am looking for a structural engineer to perform a calculation for anchor bolts to secure a steel stand to a concrete base. Result should be what size of anchor bolts use. And some calculations which proves this. We have already the design of the steel construction. Now I have added a specification of the project so please take a look at the attached and let me know if it is still possible. It is important that the work is made according to international standards because it is going to be used for a large bridge in Denmar.

Lead Developer for E-commerce Backend

Overview We need a skilled Lead Backend Developer to modernize our E-commerce platform, ensuring seamless operation and growth. Our platform serves thousands of active customers, and this project aims to enhance performance and scalability. Scope of work - Analyze current backend architecture - Identify bottlenecks and performance issues - Create a modernization roadmap - Design a scalable service structure - Improve API performance - Optimize PostgreSQL queries - Implement Redis caching - Improve checkout and order processing workflows - Introduce rate limiting and security improvements - Implement RabbitMQ for background tasks - Improve third-party integrations - Add fault tolerance and retry mechanisms - Enhance logging and error handling - Configure monitoring and alerting - Perform load testing - Prepare technical documentation - Deploy updates with zero downtime Company details - E-commerce Backend framework Node.js, NestJS Developer expertise Performance, Databases, Security, Testing procedures, debugging, Design, Source control Programming language TypeScript, JavaScript Delivery timeline 24 September 2026

Full-Stack Developer for E-Commerce Landing Page

We need an experienced Full-Stack Developer to build a responsive e-commerce landing page from finalized Figma designs. ​Responsibilities ​Translate Figma designs into clean, semantic HTML5, CSS3, and JavaScript. ​Set up a basic backend to securely handle user sign-ups and contact form submissions. ​Integrate a secure payment gateway (Stripe or PayPal API) for a smooth, single-product checkout flow. ​Optimize the landing page for fast loading speeds and ensure flawless mobile responsiveness. ​If you have experience building clean, fast e-commerce landing pages, we want to hear from you! Please submit your proposal alongside a few links to your recent work. We look forward to reviewing your application!

Next.js Developer Needed to Connect Dashboard UI to Node.js API

Experienced full‑stack Next.js developer needed to integrate an existing dashboard with a Node.js API. Tasks: connect backend to MongoDB and verify authentication endpoints; replace mocked email login with real API login using JWT; secure authenticated routes; substitute mocked dashboard state with live API data; implement clear loading, error and empty states; provide setup notes and a GitHub feature branch with a concise change summary. TypeScript and Next.js/React integration experience required. Fixed‑scope engagement, 4–6 week estimate.

opportunity

Backend Developer to construct a isolated, testing environment

Property Investor Africa seeks an independent backend developer to build an isolated testing environment simulating an enterprise real estate data provider. Deliverables: a relational mock database with 500+ structurally varied asset records (images, pricing, coordinates, metadata); a script to stream INSERT, UPDATE, DELETE payloads reflecting market dynamics; endpoints emitting simulated real-time bursts to stress-test listeners; REST API and secure webhook feeds; API schema and 14-day integration support. Must have 4+ years backend architecture experience, expertise in event-driven systems, webhooks, and secure RESTful streams, and be ready to deliver and begin support within 48–72 hours of engagement.

Senior Full-Stack Engineer Needed for AI SaaS Developme

Seeking a Senior Full-Stack Engineer to architect and scale an AI SaaS platform. Responsibilities include designing responsive React/Next.js interfaces, building robust Node.js backends with PostgreSQL, integrating OpenAI APIs, implementing Stripe payments, and deploying scalable infrastructure on AWS or Vercel. Must deliver production-ready, maintainable code, optimize performance, ensure security best practices, and collaborate on product roadmap and CI/CD workflows to drive rapid, reliable feature delivery.

3D Printable Wall-Mounted Vertical Ant Farm Model Design Needed

I am looking for someone to design a vertical wall-mounted ant farm model that can be 3D printed. The model needs to be practical, secure, and designed properly for printing. It should be suitable for ants, with natural-looking tunnels and chambers visible from the front. The design will need to be supplied as printable STL/STEP files. ⸻ Main Design Requirements The ant farm should be designed as a vertical wall-mounted unit. It needs to: * Be easy and secure to wall mount. * Have a strong rear body/frame. * Include mounting holes or keyhole-style wall fixings. * Be stable once fitted to a wall. * Be suitable for 3D printing without unnecessary supports where possible. ⸻ Front Perspex Panel The front needs a recessed area to hold an A4 sheet of 3 mm Perspex. The Perspex size will be: 297 mm wide x 210 mm tall x 3 mm thick Please note: the Perspex must sit neatly into the front recess. The model also needs screw holes around the front so the Perspex can be fixed securely using M3 screws. I would like the screw holes positioned neatly around the Perspex, with enough support around them so the print does not crack when tightened. ⸻ Magnet Slots The model also needs small recesses for magnets to be glued into place. Magnet size: 4 mm wide x 2 mm deep These should be placed in sensible positions to help secure interchangeable side parts, covers, or connection pieces. The magnet holes should be slightly oversized to allow for glue and tolerance. ⸻ Natural Tunnel System The main visible section needs to include a natural-looking tunnel system, similar to the example image supplied. The tunnels should not look too geometric or artificial. I want: * Natural burrow-style tunnels. * Wider cave areas/chambers. * Larger voids for breeding, resting, or storing food. * Multiple routes up, down, left, and right. * Interconnecting tunnels. * Tunnels and chambers fully visible from the front through the Perspex. * Enough depth for ants to move comfortably. The tunnels should feel organic, but still printable and easy to clean where possible. ⸻ Side Connection System The design needs interchangeable side sections on both sides. These side sections should allow the user to either: 1. Connect multiple ant farm units together, or 2. Block the side opening if only using one unit. So I need: * Left and right side connection points. * Removable connector parts. * Removable blanking/blocking parts. * Secure fitting using magnets, screws, or a simple mechanical slot system. * The ability to expand the ant farm in the future by adding more printed units. ⸻ Foraging Area The design needs a foraging area built into it. This should be separate from the main tunnel section but connected so ants can access it. The foraging area needs to be large enough for: * Ants to explore. * Food to be placed inside. * Easy access for maintenance. * Good visibility. ⸻ Water / Sweet Water Area The model also needs a dedicated area large enough to place water or sweet water. This could be designed as: * A small removable tray area. * A recess for a small test tube/water tube. * A space to place a small feeding dish. I am open to suggestions on the best option, as long as it is practical, safe for ants, and easy to refill. ⸻ Printing Requirements The model must be designed for FDM 3D printing. Please design with the following in mind: * Printable on a standard large-format 3D printer. * Strong walls. * Minimal supports where possible. * Sensible tolerances for Perspex, magnets, screws, and connectors. * Parts should be split if needed to make printing easier. * The design should not rely on very fragile details. * Wall-mounted strength is important. Ideally, I would like files supplied in: * STL * STEP, if possible * Separate files for the main body, side connectors, blanking plates, and any removable parts ⸻ Style Reference I have attached an image showing the style I like. The tunnel system should be visible from the front and have a natural cave/burrow look, rather than straight lines or basic grids. I want the final design to look clean, modern, and functional, while still feeling like a natural ant habitat. ⸻ Final Deliverables Please provide: * Full 3D printable model files. * Separate printable parts where needed. * A version with the A4 Perspex recess. * Side connector pieces. * Side blanking/blocking pieces. * Magnet recesses. * M3 screw holes for the Perspex. * Wall mounting points. * Any notes on print orientation and assembly. ⸻ Important Notes The design must be practical, not just visually nice. This will be printed and used, so tolerances, strength, Perspex fitting, wall mounting, and ant access all matter. Please include examples of previous 3D printable product designs or functional models you have created. Designs for enclosures, terrariums, aquariums, modular systems, or mechanical parts would be helpful.

Business Developmen

The Business Development Partner shall identify, contact, educate, qualify, and develop prospective clients for the Company's services. The Partner shall present and promote the Company's offerings, arrange meetings, negotiate commercial opportunities, and secure signed agreements and retainer payments. The Partner shall maintain ongoing client relationships and support revenue generation, business growth, and strategic expansion initiatives for the Company.

Freelance QA Tester / Software Quality Assurance Analyst

Experienced QA tester required to perform exhaustive quality assurance across three web platforms. Responsibilities include functional, UX, cross‑browser/device, performance and basic security testing; validation of workflows, forms, APIs and integrations; content and UI consistency checks. Deliverables: comprehensive QA report with executive summary, methodology, categorized findings with evidence and reproduction steps, bug tracker spreadsheet, and prioritized improvement recommendations. Must provide clear professional documentation within the two‑day timeline.