--- title: 'Senior iOS Engineer at ARQ' canonical: 'https://feeny.ai/job/senior-ios-engineer-arq-london-6my933ny6s76' type: 'job' last_seen: '2026-09-25' --- # Senior iOS Engineer at ARQ - **Company:** ARQ - **Location:** London, United Kingdom - **Employment:** full-time - **Work type:** hybrid - **Posted:** 2026-09-22 - **Last confirmed live:** 2026-09-25 - **Apply:** https://jobs.ashbyhq.com/ARQ/931963c1-f069-44ea-9caf-490a2d06029e/application **Skills:** iOS Development, Swift, UIKit, SwiftUI, Combine, MVVM, Clean Architecture, Testing Practices, Fintech Experience, Consumer Tech Experience > The Senior iOS Engineer will build and scale the ARQ experience, focusing on the flagship iOS app and financial product lines. This role involves writing clean Swift code, collaborating with cross-functional teams, and owning features from concept to launch to ensure high performance and reliability. ## Job description ## What We’re Looking For We’re looking for a Senior iOS Engineer who’s passionate about building elegant, reliable, and high-performance products that users love. You’ll be a hands-on engineer, contributing high-quality code and helping raise the bar for engineering standards across the team. You’ll join our Core Product Team, helping to build and scale the ARQ experience — from our flagship iOS app to new product lines like Premium, Credit, and other financial products on the roadmap. ## What You’ll Be Doing - Build and ship exceptional iOS experiences that are fast, intuitive, and delightful to use. - Write clean, maintainable, and performant Swift code using modern iOS frameworks. - Collaborate closely with Product, Design, and Backend teams to deliver features end-to-end. - Contribute to the architecture and evolution of the iOS app as it scales. - Own features from concept to launch, ensuring quality, polish, and reliability. - Participate in code reviews and help improve engineering standards and best practices. - Continuously improve app performance, stability, and user experience. ## What You’ll Need - 5+ years of professional experience in iOS development, building apps used by thousands or millions of users. - Strong proficiency in Swift and the iOS ecosystem (UIKit, SwiftUI, Combine, etc.). - Solid understanding of architecture patterns (MVVM, Clean Architecture) and testing practices. - Strong ownership mindset and attention to detail when building user-facing products. - Passion for crafting high-quality UI/UX and polished user experiences. - Experience working in fast-paced environments, ideally in fintech or consumer tech startups. ## Benefits - Competitive salary and benefits - Stock options, so you own part of what you build - Discretionary performance bonus - The latest tools and technology - A world-class team that will challenge and grow your skills - The opportunity to help build the best fintech app in Latin America - Office Policy: 3-4 days a week in-office ## About ARQ ## Company Overview - **One-liner**: ARQ (formerly DolarApp) is a global fintech platform that provides multi-currency accounts, real-time currency conversion, and investment access to US stocks and ETFs for individuals across the Americas. - **Entity Type**: Private (funding stage not disclosed; raised tens of millions from top-tier investors) - **Headquarters**: Not publicly available (serves the Americas; localized sites for Argentina and Mexico) - **Founded**: 2021 - **Founders**: Not publicly available ## Core Business - **Primary industry**: Fintech – cross‑border banking, payments, wealth management - **Target customers**: B2C – travelers, investors, professionals, and global citizens in Latin America and beyond - **Mission**: “Modern finance for the global era” – to give customers control over their money with faster, cheaper, and more transparent financial rails. ## Products & Services - **ARQ Multi‑Currency Account**: A digital account supporting USD, EUR, and local currencies (e.g., Argentine peso, Mexican peso). Users can convert between currencies at real market rates with no hidden fees. - **ARQ Debit Card**: A Mastercard (inferred) for spending at leading conversion rates with zero commission or hidden charges. - **ARQ Investments**: Access to US stocks and ETFs directly from the ARQ account, enabling long‑term wealth building. - **Payment Rails**: US and European local account details to receive and send payments globally. ## Market Standing - **Valuation**: Not publicly available - **Key Metric (Private)**: Total funding – “tens of millions of dollars” from renowned investors; 2 million users as of 2026-07-01 - **Notable Investors**: Sequoia Capital, Founders Fund, Brevan Howard Digital, Y Combinator, Kaszek Ventures - **Growth Signals**: Rebranded from DolarApp to ARQ in 2024 (per Sequoia partnership date); rapid user growth (2M people); expansion across the Americas; product diversification into investing. ## Competitive Advantages - **Transparent pricing**: Real market conversion rates, no hidden fees – a stark contrast to traditional banks - **Global accounts**: Users get US and EU bank details and a debit card usable worldwide - **World‑class backing**: Sequoia, Founders Fund, YC, etc. provide credibility and strategic support - **Elite team**: Small, high‑caliber team with experience at Revolut, Uber, Amazon, Block, and UBS, enabling fast execution - **Vertical integration**: Combining payments, currency exchange, and investing in one app ## Strategic Focus - **Build the financial system of the next century** – replace legacy banking middleware with direct, customer‑owned rails - **Scale across the Americas** – starting in Argentina and Mexico, then expanding to other markets - **Deepen wealth management** – add more asset classes and long‑term savings tools - **Maintain a lean, high‑impact team** – “small teams with the best talent outcompete massive companies” ## Why Work Here - **Culture**: “Long‑term ambition and absolute conviction”; “nimble, but ambitious” – the careers page describes a mission‑driven, execution‑focused environment - **Team & autonomy**: Small teams own meaningful product areas; high ownership and rapid iteration - **Remote/office**: Not explicitly stated, but likely hybrid or remote‑friendly given the global nature of the business - **Notable**: Founders and early employees have built profitable products at iconic companies; strong emphasis on “world‑class in everything we do” - **Perks**: Not publicly disclosed, but likely competitive compensation and equity in a high‑growth fintech ## Sources 1. [arqfinance.com](https://www.arqfinance.com/en-AR) 2. [jobs.ashbyhq.com/arq](https://jobs.ashbyhq.com/arq) 3. [sequoiacap.com/companies/arq/](https://sequoiacap.com/companies/arq/) 4. 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