---
title: 'Senior Software Engineer | Platform at ARQ'
canonical: 'https://feeny.ai/job/senior-software-engineer-platform-arq-london-kbdzqdpk7kre'
type: 'job'
last_seen: '2026-10-30'
---

# Senior Software Engineer | Platform at ARQ

- **Company:** ARQ
- **Location:** London, United Kingdom
- **Employment:** full-time
- **Work type:** hybrid
- **Posted:** 2026-10-20
- **Last confirmed live:** 2026-10-30
- **Apply:** https://jobs.ashbyhq.com/arq/7912b871-d5ea-421f-b964-fd0054e1fd0c

## Job description

## About ARQ

ARQ is one of the fastest-growing fintechs in the world. Our mission is to redefine how people interact with money across borders, building the infrastructure to move value seamlessly. We’re still early in our journey, which means every person who joins shapes the future of our product, culture, and growth. If you’re excited by big challenges, global impact, and the chance to grow fast with a world-class team, ARQ is the place to do it.

## What we're looking for

We’re looking for a world-class, hands-on Senior Software Engineer to join our Platform team who takes a software engineer’s approach to architecting and building engineering infrastructure. Our engineering culture is focused on fully type-safe, declarative & testable infrastructure as code and we’re looking for like-minded engineers who also value these properties to join us. The ideal candidate will have a raw passion for programming, a broad knowledge base and the ability to dig deeply into any technical area required to enable our product engineering team to deliver the best product on the market for managing modern finances. We architect extreme-quality, automated systems to orchestrate hundreds of backend services & databases across tens of kubernetes clusters, tens of thousands of data processing jobs and tens of thousands of CI/CD builds per week - if that excites you, we want to talk to you.

## What you'll be doing

- The design and implementation of the secure, highly-available infrastructure layer that powers a modern, high-growth, financial services company.
- Ensure our product engineering organisation can spin up new infrastructure in an unimpeded and rapid manner, through the careful design and implementation of shared IaC libraries, cli tools and codebase patterns.
- Problem-solve, analyse and debug infrastructure issues & opportunities with members of the wider engineering team.
- Strategise & execute on the rollout techniques for making sweeping infrastructure changes as we constantly integrate new best practices & security improvements into our setup.
- Orchestrate multi-region infrastructure and deployments to meet security, availability and compliance requirements.
- Build, maintain & optimise high-volume CI infrastructure, along with reusable pipeline templates suitable for a microservices architecture.
- Implement GitOps workflows for declarative application deployments.
- Improve application monitoring and alerting with Datadog, Prometheus, and Grafana.

## What you'll need

Required Experience

- Software Engineering Foundation: Strong background in full-cycle software development. You should be as comfortable building a customer-facing API as you are provisioning a Kubernetes cluster.
- System Design: Experience driving the architecture and implementation of large-scale, distributed production systems.
- Strong Programming Skills: Fluent in at least one modern typed language (e.g., TypeScript, Go, Rust, or Java). We write code, not just config.
- Modern Infrastructure Stack: Hands-on experience with Kubernetes, CI/CD, and sophisticated IaC (Pulumi, Terraform, or CDK).
- Security Mindset: Deep understanding of modern cyber-security attack vectors and how to bake "secure-by-default" patterns into the platform.

## Nice to Have

- TypeScript Fluency: Experience with TypeScript and systems to ensure infrastructure safety.
- Fintech Expertise: Experience working within regulated environments or high-compliance industries.
- Data Infrastructure: Familiarity with scaling data engineering pipelines and distributed databases.
- GitOps: Experience with ArgoCD or Flux for declarative, state-driven deployments.

## What We Value

- Systems thinking - understanding how distributed systems work end-to-end
- Problem-solving - methodical debugging of complex infrastructure issues
- Collaboration - working with engineering teams to understand their needs
- Documentation - clear runbooks, technical documentation, and knowledge sharing
- Pragmatism - balancing technical excellence with practical delivery

## 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. [arqfinance.com/en-AR/careers](https://www.arqfinance.com/en-AR/careers)

## Other roles at ARQ

- [Talent Acqisition Specialist](https://feeny.ai/job/talent-acqisition-specialist-arq-london-degxktq8170y) — London, United Kingdom
- [Fincrime Compliance Manager](https://feeny.ai/job/fincrime-compliance-manager-arq-new-york-b25gryekeh00) — New York, NY
- [Brokerage and RIA CCO](https://feeny.ai/job/brokerage-and-ria-cco-arq-new-york-06mqqqs0mfz4) — New York, NY
- [Lead Software Engineer(Java)](https://feeny.ai/job/lead-software-engineer-java-arq-london-vxx9v2k2nqv7) — London, United Kingdom
- [Lead Software Engineer (Java)](https://feeny.ai/job/lead-software-engineer-java-arq-krakow-ewehrf7sap7z) — Krakow, Poland
- [Senior Software Engineer (Java)](https://feeny.ai/job/senior-software-engineer-java-arq-krakow-4saeyw8xey20) — Krakow, Poland
- [Senior Software Engineer  (Java)](https://feeny.ai/job/senior-software-engineer-java-arq-london-9t6v6nd5k56k) — London, United Kingdom
- [Software Engineer  (Java)](https://feeny.ai/job/software-engineer-java-arq-london-tgqg0nyfn6p1) — London, United Kingdom
- [Software Engineer (Java)](https://feeny.ai/job/software-engineer-java-arq-krakow-0jk9s5qcwhet) — Krakow, Poland
- [Head of Growth - Argentina](https://feeny.ai/job/head-of-growth-argentina-arq-buenos-aires-wdvxv9t52dps) — Buenos Aires, Argentina