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Founded by ___, creator and co-founder of ___ (Series B, $425M valuation), Colossal is building at the intersection of generative app development and commerce infrastructure. Think: Lovable for commerce. We're backed by Tier 1 investors: ___, ___, ___, and are planning to raise our seed round later this year. Why Colossal? We're building the world's first AI-native commerce infrastructure platform, working with bleeding edge technologies and paradigms to redefine how businesses sell online. Join our early team and help shape the future of AI commerce. We’re still in stealth, so get in touch to learn more. 🥷 What we’re looking for • 5+ years experience building service-oriented software products end to end, ideally at early-stage startups, • A strong understanding of AI-based developer tools, methods and paradigms, • Generalist mindset with experience across the full stack, • Strong understanding of CI/CD, cloud infrastructure, observability, and developer tooling, • Comfortable owning products and features end to end, and taking responsibility for performance and optimisation, • Strong communicator, able to distribute knowledge across the team effectively through documentation, talks, demos and presentations What you’ll do • Build and own core backend services for our commerce infrastructure tools, including billing, workflows, and financial operations, • Build features that integrate AI into real-world product experiences, • Play a key role in software architecture design, including research, writing POCs for further refinement How we hire • Initial call with the founder (30 mins), • Complete a take home exercise, • Task review and pair programming with a team member (1 hour), • Meet with the product team for 2-way interview (30 mins), • Offer stage (including reference checks) To apply, please send your resume and a brief intro describing your interest to:

📱 Junior Android Developer | Building the Future of Mobile !! IMMEDIATE JOINERS !! Junior Android Developer Location : London Work mode : Onsite Experience: 2–5 years CITIZEN & DEPENDENTS Are you a mobile enthusiast who lives for clean code and smooth UI transitions? We are looking for a Junior Android Developer with 1+ years of professional experience to join our engineering team. At this stage in your career, you’ve moved past "Hello World" and are ready to tackle real-world scalability, complex APIs, and the occasional Gradle headache. If you’re eager to learn from seniors while making a tangible impact on a product used by thousands, let’s talk. 🛠️ What You’ll Do • Feature Development: Collaborate with our product and design teams to build and ship high-quality features for our Android application., • Code Quality: Write clean, maintainable code in Kotlin (and some legacy Java) while following modern architectural patterns (MVVM/MVI)., • UI/UX Implementation: Turn Figma designs into pixel-perfect layouts using Jetpack Compose or XML., • Bug Squashing: Identify, debug, and fix performance bottlenecks and edge-case crashes., • Continuous Learning: Participate in code reviews, contribute to technical documentation, and stay up-to-date with the latest Android Jetpack libraries. ✅ What You Bring • Experience: 1+ years of professional experience in Android development (internships count if they were high-impact!)., • Language Proficiency: Strong foundations in Kotlin and a solid understanding of Java., • Android SDK: Familiarity with Activities, Fragments, Services, and Lifecycle components., • Networking: Experience working with RESTful APIs using Retrofit and handling JSON data., • Tooling: Proficiency with Git and a working knowledge of Android Studio., • Mindset: A "can-do" attitude and the humility to ask for help when a bug just won't budge. 🌟 Bonus Points if You Have: • A published app on the Google Play Store (send us the link!)., • Experience with Dependency Injection (Hilt/Dagger)., • Familiarity with Coroutines and Flow for asynchronous programming., • A passion for Material Design 3. 🚀 Why Join Us? • Mentorship: Work directly with Senior Developers who actually enjoy teaching., • Tech Stack: We stay on the cutting edge—no ancient legacy codebases here., • Growth: A clear path to becoming a Mid-level Developer within [Timeframe]., • Perks: [Insert Perks: e.g., Remote-first culture, Learning stipend, Health benefits].

🚀 About Webigence and Spark Travel Webigence has 25 years of experience crafting UX‑first, often highly complex software. Our engineers pair forward‑thinking agile practices with an obsession for intuitive design, shipping products that feel effortless even when the logic underneath is anything but. Alongside a handful of long‑standing third‑party clients, we’re scaling our own SaaS product—Spark Travel—at pace. You’ll join a smart, collaborative team that pushes each other to articulate and defend every architectural decision in pursuit of best‑in‑class software. Spark Travel itself is on a mission to drag the tailor‑made travel industry into the 21st century. Our cloud‑native platform unifies sales, supplier contracting, dynamic pricing, and on‑trip operations—everything from the first quote to the traveller’s safe return. The market is huge, the incumbents are slow, and we already have meaningful traction: roughly 35 customers and an accelerating sign‑up pace, a very healthy sales pipeline, and a roadmap brimming with genuinely novel features. With a fantastic existing team across engineering, product, customer success, marketing, and sales, we’re gearing up for hyper‑growth. We’re looking for two down‑to‑earth professional, a conscientious Senior Software Developer, to build on what already works and unlock our next wave of innovation. 🌟 Your Impact • Raise the bar sensibly. Whether you’re refining our Azure architecture as CTO or shipping revenue‑critical features as Senior Dev, you’ll set high standards without reinventing the wheel., • Champion intuitive user experiences. Both roles care deeply about usability, ensuring our platform feels effortless for travel pros and their travellers., • Own the craft. Understand the problem, ship the solution, measure the outcome—and when something’s working, double‑down on it., • Move the needle. Your work will streamline the day‑to‑day of leading tailor‑made tour operators and DMCs—enhancing trip experiences for their travellers as we scale. 🧭 Role Snapshot 2️⃣ Senior Software Developer • Be UK‑based (remote within the UK) with ability to attend occasional team meet‑ups in London (travel expenses covered)., • Design, build, and maintain features across the stack: .NET (C#) based API backends, Angular (TypeScript) based frontends, SQL Server, Cosmos DB., • Own mission‑critical modules such as pricing engines, itinerary or form builders, client proposal app, etc., • Write clean, tested code; automate everything from CI/CD pipelines (Azure DevOps/GitHub Actions) to performance benchmarks., • Investigate and diagnose issues and perform root cause analysis., • Collaborate cross-functionally with Product, Design, and Customer Success., • Propose incremental improvements and occasionally explore new tech (e.g. Azure OpenAI) when it clearly solves a problem. You might be our Senior Dev if… - Hold a 1st-class or 2:1 degree in Computer Science or a closely related discipline. - 4+ years building modern web or data applications with .NET and at least one JavaScript framework. - Hands-on experience with Azure or another major cloud provider, plus an understanding of microservices and event-driven architectures. - You love balancing delivery speed with technical excellence, and you’re keen to keep learning. 🎁 What We Offer • Competitive salary, equity options coming soon, • Remote‑first culture with asynchronous workflows, • Private healthcare, • Employer pension contributions above statutory, • Home‑office setup budget, • Coworking space allowance, • Flexible hours with async core overlap, • Professional‑development budget, • Conference & certification leave, • Choose‑your‑own‑tech toolkit, • Travel‑to‑London expenses for required in‑person meetings, • Collaborative and innovative company culture 📩 How to Apply • Send your CV., • Confirm you are currently living and legally able to work in the UK., • Share one project or decision you’re proud of, why it mattered, and what you learned. Please note: We are only considering UK‑based applicants who fully meet the role criteria. Applications that do not comply will not be considered now or in future hiring rounds. Deadline: 15th March 2026 (rolling review—apply early). Spark Travel is an equal‑opportunity employer and a welcoming neurodiverse team. We celebrate diversity and are committed to creating an inclusive environment for all. We’re not just saying that, we really mean it!

Senior Full Stack Developer - Remote - Competitive Salary I'm working with an exciting organisation that is looking to appoint a Senior Full Stack Developer to help design and deliver secure, cloud-native applications within a modern Microsoft and Azure ecosystem. This is an excellent opportunity for an experienced full-stack engineer who thrives in structured architectural environments and enjoys building scalable, enterprise-grade systems using the latest .NET and Angular technologies. Key Responsibilities You will be responsible for: Designing and developing scalable backend services using .NET 10 and ASP.NET Core Web APIs Building and maintaining Angular 21 front-end applications using DevExpress DevExtreme v25 Implementing Azure-native solutions (App Services, Azure SQL, Storage) Developing and maintaining Infrastructure as Code using Bicep Integrating Azure Entra ID for authentication and role-based access control Managing secure secrets via Azure Key Vault Writing and maintaining unit and frontend tests (NUnit and ViTest) Contributing to CI/CD pipeline improvements and secure deployment practices Participating in architecture and technical design reviews Ensuring all development aligns with OWASP security best practices Tech Stack & Environment Core technologies: .NET 10 / ASP.NET Core Angular 21 (mandatory) DevExpress DevExtreme v25 (mandatory) Entity Framework Core TypeScript / RxJS Microsoft Azure Azure Entra ID Azure Key Vault Bicep (Infrastructure as Code) CI/CD pipelines Bitbucket (Git) You'll also work closely with UI/UX teams using Figma and operate within Agile delivery frameworks. What They're Looking For 5+ years' commercial software development experience Strong expertise in modern .NET Proven experience with modern Angular (15+ ideally) Hands-on Azure architecture and deployment experience Experience implementing Infrastructure as Code (Bicep preferred) Experience integrating Azure Entra ID authentication Strong understanding of RESTful API design Experience implementing CI/CD pipelines Background working in regulated or security-sensitive environments Experience with DevExpress / DevExtreme is highly desirable. Why This Role? This is a standout opportunity for a senior engineer who values secure architecture, clean code, and modern Azure cloud engineering. You'll join a mature technical environment with clearly defined standards, strong DevOps practices, and a genuine commitment to security and scalability. If you're open to a confidential discussion, apply now and I'll be in touch. Oscar Associates (UK) Limited is acting as an Employment Agency in relation to this vacancy. To understand more about what we do with your data please review our privacy policy in the privacy section of the Oscar website. TPBN1_UKTJ

Full-Time Mobile App Developer (. Links to live apps you’ve shipped (App Store / Play Store). Apple App Store (and/or Google Play).

Software Developer Desktop App Developer (WinUI 3, UWP, or WPF). We're seeking a skilled and motivated Software Developer with a minimum of 3 years' experience in desktop application development using the. Software Developer - Desktop App Development (WinUI3, UWP, WPF).

A central government department is looking for an experienced App Developer to join a high‑security programme. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Experience working in air‑gapped environm

Product Manager I, Google Play Developer, Identity and App Quality. Experience driving progress, solving problems, and mentoring more junior team members; deeper expertise and applied knowledge within relevant area. Google Play offers music, movies, books, apps and games for devices, powered by the

App Developer – Restaurant Finder. Familiarity with location services and mapping APIs. This role involves developing a user-friendly application that enables users to discover restaurants in their area, view daily meal offerings and deals, and interact with restaurant profiles by posting photos a

We have an exciting opportunity for an iOS Mobile App Developer to join our Engineering 'chapter' here at Tesco Mobile, where you will design, code and implement customised solutions for the Tesco Mobile iOS mobile app. You will work closely with a dynamic cross‑functional squad that includes iOS

The ideal candidate will have demonstrable experience in building robust iOS apps, lead a team of developers, and ensure high application performance through testing and optimization. A leading FTSE100 company based in the United Kingdom is seeking a Mobile App Lead Developer to spearhead the develo

We are seeking a skilled and proactive Application developer to support the development and deployment of the AWS Professional Supply Chain Command Centre solution. Develop backend services on AWS to support the In Scope Unit Tracking Application. Build a notifications module with configurable routi

We are now looking for an App Developer to join the team and help shape the mobile apps that bring those games to life. We are committed to creating opportunities for everyone here at tombola, and we welcome applications from all backgrounds and encourage individuals to apply, even if you don’t me

A global entertainment leader in London is looking for a Senior Web Application Developer to enhance their eCommerce platform. This role involves leading the development of secure and scalable web applications using ASP.

Research-to-production model deployment.At Referment, we’re partnering with a global leader in the Systematic Trading space to hire a.This is a high-impact role sitting at the intersection of quantitative research, rates modelling, and production-grade engineering, ideal for someone 2–5 years ou

We are seeking an experienced Mobile App Engineer to develop and optimize our customer-facing mobile application and web portal as part of our in-house Charge Point Management System (CPMS). Native Mobile Development: Develop and maintain high-quality native mobile applications for iOS and Android u

Mobile App Developer page is loaded## Mobile App Developerlocations: Londontime type: Full timeposted on: Posted Todayjob requisition id: REQ00038015At Believ, formerly known as Liberty Charge, we believe sustainable transport should be accessible to everyone. About the role**We are seekin

A new and exciting role for a Mobile App Lead Developer with a strong technical background in developing Apple ecosystem customer facing iOS apps in Swift to join one of the UK's leading FTSE100 companies. You will lead and mentor a team of up to 10 experienced developers and work alongside the arch

A global entertainment company seeks a Senior Web Application Developer in Hammersmith, London. The ideal candidate will collaborate across teams to create engaging, secure web applications and contribute to ongoing enhancements.

An entrepreneur based in Gaborone, Botswana is seeking an app developer to build a service provider application designed for the events industry. Proficiency in cross-platform frameworks such as Flutter or React Native, or native app development (Swift, Kotlin). Strong knowledge of backend developme

Data & Analytics APP Factory - 4 x Java Developer's. We are looking for 4 skilled full stack web application developers to deliver the end to end web service against the DWP agreed technology stack, within the agreed security framework. We are looking for 4 skilled full stack web application develop

A leading recruitment agency is seeking an experienced App Developer to join a high-security government project.

Research-to-production model deployment.At Referment, we’re partnering with a global leader in the Systematic Trading space to hire a.This is a high-impact role sitting at the intersection of quantitative research, rates modelling, and production-grade engineering, ideal for someone 2–5 years ou

The Google Play team enhances the Android ecosystem by giving developers and partners a premium store where they can reach millions of users. We also consider qualified applicants regardless of criminal histories, consistent with legal requirements. If you have a disability or special need that requ

Reporting to the Head of Development, you will use your expertise in cross‑platform application development to deliver high‑quality, performant and secure applications using. Working with senior technical team to agree best practices and design approaches. In this role, you’ll be developing cr

A leading gaming company is seeking an App Developer to shape the mobile apps for their popular bingo site.

A leading compliance software company is seeking a MAUI Developer to design and develop cross-platform applications.

A leading AI integrator company is looking for Senior Agentic Application Developers to lead the full-stack development of AI-powered systems.

We are now looking for an App Developer to join the team and help shape the mobile apps that bring those games to life. We are committed to creating opportunities for everyone here at tombola, and we welcome applications from all backgrounds and encourage individuals to apply, even if you don’t me

Links to live apps you’ve shipped (App Store / Play Store). Applications without shipped app links will not be considered. We’re hiring a full-time Mobile App Developer to build a.