7 of 7 Mobile App Jobs in the City of London

product, delivering an instant, network-verified trust indicator to a user's device in the moments before they answer the call. This is not a standard mobile app role; it is a deep, real-time systems challenge that requires you to architect and implement a high-performance, secure, and reliable solution that integrates directly with the Android … implementation of our sub-500ms Time-to-Trust (TtT) metric. You will be the driving force behind the trust in our product, working at the intersection of native mobile engineering, real-time data processing, and client-side security. This position offers a unique opportunity to build a category-defining security product from the ground up, leveraging proprietary, network … a critical, non-negotiable skill for this role. ? Proven experience building high-performance, real-time user interfaces that are deeply integrated with the Android OS. ? Strong understanding of mobile security principles and best practices, including secure data storage, network communication (mTLS), and threat modeling. ? Proficiency in consuming RESTful APIs and real-time data streams (e.g., WebSockets) in a More ❯

operations in over 20 countries our client has fast become a major player within the digital download arena. In addition to an award winning website they have launched mobile apps for the iPhone and Android market, the latter of which has been featured on Google Play. They have created a real buzz in the industry have been written More ❯

sector is over 60% analogue and paper-based, losing out on the many benefits technology can bring. We're passionate about changing this with our awesome mobile App and Web-based tools that make delivering care far, far easier for hard-working carers. The role We're looking for a pragmatic and user-focused Product Engineers … B2B product development. The Interview process: Submit your Application Exploratory call with Kris, Talent Partner via video chat (30 mins) Task with Flori + Denisa, our FullStack and Mobile Engineers via video chat (60 mins) In-person Interview with Mikael, Tech Lead + Hiring Manager + Will, Product Manager (60 mins) Final interview with Sam (Co-founder & CEO More ❯

Asia. The stakeholder management piece will be big, with lots of moving parts with lots of internal teams to engage and handle, across multiple territories including IT, e-commerce, app team and external vendors. As well as handling multiple worksteams - e.g. testing in one market whilst scaling in another. So the ability to keep track of progress, maintain alignment … Channels Voice of the Customer programme across global regions Overseeing testing, scaling and optimisation of whats been implemented to ensure its fit for purpose Collaborating with ecommerce, IT, and app teams to manage delivery milestones and integrations Well versed in technical aspects of a VoC programme e.g. configuration of a website, mobile app, and third party More ❯

interface. Your challenge is to build the magic: the live transcription, the mid-call intervention, the post-call summaries, that defines our premium user experience. You will own the app that we will showcase to the world at Mobile World Congress (MWC) 2026, and your work will be the primary driver for our monetization strategy. Key Responsibilities … fidelity designs (e.g., Figma, Sketch) into beautiful, performant, and maintainable code. ? A strong understanding of Android UI performance optimization, memory management, and threading models. ? Experience with the full mobile development lifecycle, from ideation and prototyping to testing, release, and maintenance. Preferred Qualifications ? Advanced UI/UX & Conversational AI ? Prior experience designing or building conversational interfaces (e.g., chatbots, voice … assistants). ? A strong portfolio that explicitly showcases beautiful, complex, and highly responsive mobile UIs you have built. ? Relevant Technical Experience ? Familiarity with Android's native call-handling APIs (e.g., CallScreeningService, ConnectionService), as you will be integrating closely with the engineer who owns this. ? Experience with performance testing and profiling Android applications to hunt down and eliminate bottlenecks. More ❯

systems on AWS (Lambda, DynamoDB, Kinesis, ECS/EKS). Mentor a cross-functional team and elevate engineering standards. Prototype and ship features that drive commercial impact - including mobile apps … and PWAs. What You'll Bring Essential: 7+ years in software engineering, with 3+ years in a DevOps or Technical Lead role. Needs to have built a front-end app and a console or dashboard backend. Deep expertise in serverless/event-driven architecture on AWS. Mastery of CI/CD, Agile delivery, and containerisation (Docker, Kubernetes). Strong More ❯

Backend Engineer Layer 3 social network App Remote £100K-£150k Plexus has another great opportunity with one of our long-term clients within the Layer 3 world. They are a social network app with crypto integration, they allow users to seamlessly support their favourite creators and projects They are seeking a backend engineer to join one of their … and mobile applications Role: Develop an API used in the product as well as their users Be part of a team to create new features in the app Be part of a team to deal with any incidents Engage in coding and RFC tests Requirements: Programming skill in Python, GraphQL and MongoDB Advanced skill in building APIs More ❯