Available to hire
Hi, I’m Caleb Crosby Adainoo, a versatile software engineer with over 10 years of experience building scalable and user-friendly solutions across different industries like Fintech, IoT, AgriTech, and EduTech. I’ve collaborated with teams globally and thrive on leading projects that drive real business growth and performance.
Outside of coding, I’m passionate about music and technology, which is why I also work as a guitarist and YouTuber. I enjoy tackling complex problems, creating efficient systems, and sharing my knowledge with the community in a friendly, approachable way.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Language
English
Fluent
Work Experience
Head of Mobile (Remote) at DraftSounds, Berlin, Germany
October 1, 2022 - PresentLed the architecture and development of a next-generation mobile DAW guiding the product from prototyping to market launch. Implemented proprietary audio synthesis engine for real-time multi-track playback and waveform rendering. Developed custom Java and Kotlin libraries for audio features and integrated geolocation tagging for contextual metadata. Built CI/CD SlackBot using GitHub Actions and designed robust file and media management features including Google Drive backup. Migrated app from Expo to React Native CLI for native customization and led QA and test planning for seamless launch.
DAW Audio Processing Research Engineer (Remote) at DraftSounds, Berlin, Germany
October 1, 2022 - PresentConducted advanced research on audio synthesis methods for mobile Digital Audio Workstations including real-time sound effect processing and dynamic sound design. Developed and analyzed custom audio waveform generation optimized for mobile environments. Investigated performance and memory optimization through waveform downsizing. Contributed experimental prototyping and audio DSP exploration to evolve mobile music production tools.
Fullstack Developer (Remote) at Access Financial Services Ltd, London, UK
March 31, 2025 - July 9, 2025Developed scalable mortgage applications for B2B and B2C markets including user dashboards, multi-step forms, and mortgage calculators. Implemented secure RBAC authentication with JWT and OAuth. Integrated real-time mortgage rate APIs and automated approval workflows, onboarding identity verification via Onfido. Refactored app for improved responsiveness and performance. Managed CI/CD pipeline with GitHub Actions and Terraform and monitored infrastructure with AWS tools. Recommended UI wording improvements for better user engagement.
Fullstack Developer (Remote) at Finer Credit, London, UK
June 30, 2023 - July 9, 2025Translated complex Figma designs into responsive React + TypeScript applications with pixel-perfect precision. Led development of subscription billing system with Stripe integration. Built B2C and B2B mortgage apps enabling filters, applications, onboarding, and document collection. Reduced customer application time from one week to 4 hours improving user satisfaction. Developed real-time mortgage dashboard and implemented session management and form validation. Automated DevOps reporting with custom SlackBot and improved app speed by refactoring. Integrated identity verification via Onfido and contributed to API and deployment pipeline architecture decisions. Mentored junior developers and participated in hiring and code reviews.
Frontend Developer (Remote) at ManyMarts, Oslo, Norway
July 31, 2022 - July 9, 2025Translated Figma UI/UX designs into high-performance front-end React and TypeScript applications. Integrated RESTful APIs and GraphQL for data-driven experiences. Developed reusable custom components for shared libraries. Maintained automated testing with Jest and Cypress to ensure UI reliability. Performed code reviews and managed production deployments ensuring high performance and GDPR compliance. Implemented Google Analytics and Firebase Analytics for tracking user behavior.
Fullstack Web Developer (Remote) at WayaMoney, London, UK
July 31, 2021 - July 9, 2025Designed and built automated email template systems and key platforms including landing pages, B2C digital wallet app, B2B enterprise client apps, admin portals and ticketing systems. Supported client acquisition for aviation industry with timely delivery. Refactored code to scale with 50,000+ active users. Implemented backend API endpoints in collaboration with core teams. Partnered with mobile developers for UI improvements using Flutter. Integrated multiple payment gateways for cross-border transactions and implemented OTP authentication via SMS providers. Supported product with $1M+ transaction volume across multiple countries.
Fintech QA Tester (Remote) at Dnar
May 31, 2020 - July 9, 2025Executed QA testing on beta Android financial app using predefined test scenarios. Provided feedback on UI/UX design and contributed domain expertise on wallet system workflows helping refine product during early stages.
Software Engineer (Remote) at Limitless Artificial Intelligence Ltd, Ghana
November 30, 2018 - July 9, 2025Designed and developed AgriTech prototype 'Farmer’s Friend' to aid pest control and harvest optimization. Built AI-powered COVID-19 early detection prototype using X-ray image analysis. Developed official company landing page and documented QA testing procedures supporting prototype validation.
Digital Marketer and Software Engineer (Remote) at Christina M. Dukes
March 31, 2018 - July 9, 2025Assisted in creating communication funnels for global clients focused on business and relationship coaching. Designed and implemented marketing funnels and infographics to support digital campaigns. Developed official business website enhancing online presence and lead generation.
Head of Mobile (Remote) at DraftSounds, Berlin, Germany
October 1, 2022 - PresentLed the architecture and development of a next-generation mobile Digital Audio Workstation (DAW), guiding the product from prototyping through market launch. Implemented a proprietary audio synthesis engine for real-time multi-track audio playback with zero lag and precise synchronization, tailored Java and Kotlin libraries for waveform analysis, and integrated advanced metadata tagging including geolocation, weather, and mood-based tagging. Managed file and media functionalities, SlackBot CI/CD integration, and tested extensively to ensure a seamless launch experience.
DAW Audio Processing Research Engineer (Remote) at DraftSounds, Berlin, Germany
October 1, 2022 - PresentConducted advanced research on audio synthesis and dynamic sound design optimized for mobile DAWs. Developed custom audio waveform generation techniques and investigated waveform downsizing factors to optimize performance and memory usage. Contributed to experimental prototyping and the evolution of next-generation mobile music production tools.
Fullstack Developer (Remote) at Access Financial Services Ltd, London, UK
March 31, 2025 - July 9, 2025Developed scalable mortgage applications for both B2B and B2C users, creating dashboards, multi-step forms, and calculators. Integrated secure authentication, real-time mortgage rate APIs, and identity verification tools. Improved app responsiveness by refactoring and caching, implemented CI/CD pipelines, and monitored infrastructure scaling using AWS and performance tools to enhance efficiency and user interaction.
Fullstack Developer (Remote) at Finer Credit, London, UK
June 30, 2023 - July 9, 2025Translated Figma designs into responsive React + TypeScript applications and developed subscription and billing systems with Stripe integration. Built B2C and B2B mortgage platforms improving customer application times drastically. Led product releases, built a real-time dashboard interface, automated DevOps reporting with SlackBot, and managed API integrations and CI/CD pipelines. Mentored junior developers and collaborated cross-functionally.
Frontend Developer (Remote) at ManyMarts, Oslo, Norway
July 31, 2022 - July 9, 2025Converted Figma UI/UX designs into responsive front-end apps using React and TypeScript. Integrated RESTful and GraphQL APIs to provide dynamic user experiences. Created reusable components, maintained automated tests with Jest and Cypress, and implemented analytics for user behavior tracking. Ensured GDPR compliance and high-quality code through rigorous reviews and deployments.
Fullstack Web Developer (Remote) at WayaMoney, London, UK
July 31, 2021 - July 9, 2025Designed and built automated email communication systems, developed key platforms such as B2C and B2B web apps, admin portals, and event ticketing systems. Supported backend integration, optimized UI flows, integrated various payment gateways, and maintained high performance for over 50,000 active users. Managed proprietary OTP authentication systems and supported products processing over $1 million in transactions across multiple countries.
Fintech QA Tester (Remote) at Dnar
May 31, 2020 - July 9, 2025Performed QA testing of beta financial mobile app (Android), validating core features and providing detailed feedback on UI/UX to improve usability. Contributed strategic insight into wallet system workflows during early development stages.
Software Engineer (Remotely) at Limitless Artificial Intelligence Ltd, Ghana
November 30, 2018 - July 9, 2025Developed AgriTech and COVID-19 detection prototypes leveraging AI and image analysis. Created official landing pages and QA documentation to support product validation and user feedback.
Digital Marketer and Software Engineer (Remote) at Christina M. Dukes
March 31, 2018 - July 9, 2025Implemented communication funnels for global coaching clients, designed marketing funnels, created digital campaign infographics, and developed the organization's official business website to enhance online presence and lead generation.
Head of Mobile (Remote) at DraftSounds
October 1, 2022 - PresentSpearheaded the architecture and development of a next-generation mobile Digital Audio Workstation (DAW) from prototyping through to market launch. Implemented proprietary audio synthesis engines, real-time multi-track audio playback, and dynamic waveform scaling. Engineered zero-lag synchronized audio playback optimized for mobile performance and authored custom Java/Kotlin libraries for audio processing. Integrated geolocation, weather, and mood-based metadata tagging, and built CI/CD SlackBot notifications. Led QA and test planning for a seamless production launch.
DAW Audio Processing Research Engineer (Remote) at DraftSounds
October 1, 2022 - PresentConducted advanced research on mobile audio synthesis for Digital Audio Workstations, exploring real-time sound effect processing, dynamic sound design, and waveform generation techniques optimized for mobile. Investigated waveform downsizing to balance performance and fidelity, contributing to next-gen mobile music production through prototyping and audio DSP exploration.
Fullstack Developer (Remote) at Access Financial Services Ltd
March 31, 2025 - July 11, 2025Developed scalable mortgage applications for B2B and B2C users including dashboards, multi-step forms, calculators, and real-time mortgage rate integration. Implemented secure authentication with JWT and OAuth, integrated Onfido identity verification, and automated approval workflows. Refactored performance bottlenecks and integrated third-party financial APIs. Managed CI/CD pipelines and infrastructure monitoring for AWS scalability. Enhanced user messaging and experience.
Fullstack Developer (Remote) at Finer Credit
June 30, 2023 - July 11, 2025Translated complex UI/UX designs into performant React + TypeScript applications. Architected subscription and billing systems integrating Stripe payments. Developed B2C and B2B web apps to enhance mortgage search, application, and broker onboarding. Reduced customer application times significantly through product releases. Built real-time dashboards and automated DevOps Slack reporting. Optimized React app performance and integrated Onfido for identity verification. Participated in architecture decisions, mentoring, and QA process automation.
Frontend Developer (Remote) at ManyMarts
July 31, 2022 - July 11, 2025Implemented responsive front-end React + TypeScript apps from Figma designs. Integrated RESTful and GraphQL APIs to build dynamic user experiences. Developed reusable UI components and maintained automated UI tests with Jest and Cypress. Managed code reviews and production deployments. Implemented analytics tracking and ensured GDPR compliance.
Fullstack Web Developer (Remote) at WayaMoney
July 31, 2021 - July 11, 2025Designed and developed key platforms including onboarding landing pages, digital wallets for B2C, team management B2B apps, admin portals, and ticketing systems. Supported integration with mobile developers and payment gateways. Refactored codebase to support scaling to 50,000+ active users. Delivered high performance and reliability for cross-border financial transactions.
Fintech QA Tester (Remote) at Dnar
May 31, 2020 - July 11, 2025Performed QA testing for beta financial Android mobile app, validating core features and UI/UX. Provided detailed feedback and domain insights to improve wallet workflows and product stability in the early development phase.
Software Engineer (Remote) at Limitless Artificial Intelligence Ltd
November 30, 2018 - July 11, 2025Designed and developed AgriTech and health-related AI prototypes including Farmer's Friend and Rapidnosis COVID-19 detection. Created branding and landing pages, and coordinated QA documentation and user feedback collection for prototype validation.
Digital Marketer and Software Engineer (Remote) at Christina M. Dukes
March 31, 2018 - July 11, 2025Assisted in setting up communication funnels for international clients focused on business and relationship coaching. Developed marketing funnels and visuals, created a business website, and designed digital content to support campaigns.
Education
Bachelor’s Degree at University of Cape Coast (College)
September 1, 2013 - May 31, 2017Bachelor’s Degree at University of Cape Coast (College)
September 1, 2013 - May 31, 2017Bachelor’s Degree at University of Cape Coast (College)
September 1, 2013 - May 31, 2017Qualifications
Industry Experience
Financial Services, Software & Internet, Agriculture & Mining, Education, Retail, Media & Entertainment
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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