---
title: 'Senior Software Engineer, Back End at Atomic Invest'
canonical: 'https://feeny.ai/job/senior-software-engineer-back-end-atomic-invest-latin-america-zc20dgqnbpnv'
type: 'job'
last_seen: '2026-10-18'
---

# Senior Software Engineer, Back End at Atomic Invest

- **Company:** Atomic Invest
- **Location:** Latin America
- **Employment:** full-time
- **Posted:** 2026-09-15
- **Last confirmed live:** 2026-10-18
- **Apply:** https://jobs.ashbyhq.com/atomic-invest/2dbcd665-1e90-49b0-b164-4776e85fae25

## Job description

## About Atomic Vest

We are a fast-growing, mission-driven company powering the expansion of financial services and wealth creation, with billions of assets under management. We build critical financial infrastructure that allows consumer-facing companies to offer engaging investing experiences to their customers in a frictionless way. We host advanced investing capabilities ranging from ESG investing to multi-currency trading across 60 global markets. We are a team of financial empowerment enthusiasts who have come together from various industries including tech, banking, finance, and law. At Atomic, with billions of dollars in assets under custody, you will help build services that help make it easier for ordinary individuals to secure their financial prosperity. Come join an exciting opportunity to make a lasting impact!

Location: Atomic is a remote company. For this position, it means that you can work remotely from any part of LATAM.

Key Responsibilities:

- Play a key role in designing, developing, and architecting our microservices and Temporal workflows behind money movement, trading, and account lifecycle. Long-running state machines with real financial consequences are critical. Determinism, replay safety, idempotency, and other “retryable” challenges will be important aspects in your work.
- We are a technology-first company, leveraging a cloud-native technology stack (Temporal, Kubernetes, Istio, AWS), AI and automation tools and agents for development and testing.
- You make architectural decisions across a variety of systems and raise the bar on how we test these systems that must be correct.
- Own gRPC services end-to-end in a multi-tenant platform along with partner-facing REST APIs.
- Tackle really tough engineering and product problems and operate what you build. Instrument services in Datadog; own traces, dashboards, and monitors in your area.
- Build and debug integrations with custodians, clearing systems, banking partners, and calculate and generate tax documents.

Qualifications: We are looking for candidates who are creative, autonomous, curious, and rigorous. Some things that may make you a great fit:

- 8-10+ years of software development building and operating production backend systems
- Computer Science degree or equivalent experience
- Go, or deep experience in another statically typed language plus genuine enthusiasm for picking it up
- Experience working on distributed systems where partial failures are expected (idempotency, exactly-once semantics, and reconciling against external sources and internal data are problems you have dealt with
- Experience in successful delivery of high-quality production services and systems: you’ve debugged from traces and logs, created postmortem documents and runbooks

Nice to have:

- Prior experience in the financial industry and comfort in a regulated environment
- Direct experience with Temporal or similar workflow engines where determinism, versioning, building fault-tolerant workflows, and a real sense of what belongs in an activity versus the workflow itself
- Experience with Datadog or comparable observability tooling, including building the dashboards and monitors
- Familiarity with gRPC and protobuf at scale
- Exposure to brokerage domain concepts such as clearing, settlement, corporate actions, KYC/AML, books and records.

Technology Stack

- Language: Go, Python
- Async systems: Temporal, River
- APIs: gRPC / protobuf, REST
- Data: PostgreSQL, Redis
- Infrastructure: Kubernetes (EKS), Istio, AWS
- Observability: Datadog
- PostgreSQL, AWS Kinesis, GRPC, Istio, OpenTelemetry

Atomic is an equal opportunity employer that values the benefits of diversity and prohibits discrimination and harassment All employment decisions at Atomic are based on business needs, job requirements and individual qualifications, without regard to age, race, color, religion or belief, stature, gender or sexual orientation, family or parental status, or any other status protected by the laws or regulations in the locations where we operate. Atomic will not tolerate discrimination or harassment based on any of these characteristics. #LI-Remote

## About Atomic Invest

## Company Overview
- **One-liner**: Atomic Invest provides a white-label "investing-as-a-service" platform that enables fintechs, banks, and consumer-facing companies to integrate brokerage, wealth management, and cash management products into their own offerings via APIs and pre-built experiences.
- **Entity Type**: Private (Series A; $55.5M total funding)
- **Headquarters**: New York, New York, United States
- **Founded**: 2020
- **Founders**: David Dindi (CEO), Marco Alban-Hidalgo (CTO), Emma Marriott (Co-Founder, Engineering)

## Core Business
- **Primary industry/industries**: Financial Services / Fintech Infrastructure / Wealth Management
- **Target customers**: B2B — specifically fintechs (consumer and B2B), banks/financial institutions, and other consumer-facing companies seeking to embed investing and savings products.
- **Mission or purpose statement**: "To make wealth-building accessible to every single human being." [atomicvest.com](https://www.atomicvest.com/)

## Products & Services
- **Brokerage**: Full brokerage infrastructure offering access to fractional stocks, bonds, mutual funds, ETFs, and alternative investments (U.S. and international markets). [atomicvest.com](https://www.atomicvest.com/)
- **Wealth Management**: Automated capabilities including custom indexing and bond laddering. [atomicvest.com](https://www.atomicvest.com/)
- **Cash Management**: Access to high-yield instruments such as FDIC-insured cash sweeps, money market funds, and U.S. Treasury bills. [atomicvest.com](https://www.atomicvest.com/)
- **Pre-built Experiences**: Ready-made UI components to accelerate time-to-market for partner clients. [atomicvest.com](https://www.atomicvest.com/)
- **Back-Office Dashboard**: A complete operations dashboard for managing customer accounts. [atomicvest.com](https://www.atomicvest.com/)
- **Developer-first APIs**: APIs designed for easy integration into partner platforms. [atomicvest.com](https://www.atomicvest.com/)

## Market Standing
- **Valuation/Market Cap**: Not publicly disclosed.
- **Key Metric**: Total funding of **$55.5M** (including a $25M Series A led by Anthemis and QED Investors in 2021, and subsequent venture rounds led by Brewer Lane Ventures, Aquiline Capital Partners, and Erie Strategic Ventures through 2025). [cbinsights.com](https://www.cbinsights.com/company/atomic)
- **Notable Investors/Partners**: Y Combinator, QED Investors, Anthemis, Brewer Lane Ventures, Aquiline Capital Partners, Erie Strategic Ventures, Nationwide Ventures, Appia Ventures, Lightspeed, Peak XV (formerly Sequoia India & SEA), and PayPal (via Aspire partnership). [cbinsights.com](https://www.cbinsights.com/company/atomic)
- **Growth Signals**:
    - Expanded to Europe in early 2026 via the acquisition of Groene Hart Financiële Diensten. [atomicvest.com](https://www.atomicvest.com/)
    - Announced a high-profile partnership with **Aspire** (backed by Peak XV/Sequoia) in April 2026 to power treasury management for Aspire's 50,000+ business customers. [prnewswire.com](https://www.prnewswire.com/news-releases/aspire-and-atomic-partner-to-launch-high-yield-treasury-management-platform-for-startups-302748612.html)
    - Headcount grew 15% YoY to 44 employees. [linkedin.com](https://www.linkedin.com/company/atomicvest)
    - SOC-2 Type II certified, SEC-licensed (RIA), and FINRA-registered broker-dealer. [atomicvest.com](https://www.atomicvest.com/)

## Competitive Advantages
- **Regulatory Moat**: Holds SEC, FINRA, and SIPC licenses/registrations, acting as the regulated partner so clients avoid becoming regulated themselves. Custody of assets is held at BNY Pershing (Bank of New York Mellon), the world's largest custodian bank. [atomicvest.com](https://www.atomicvest.com/)
- **End-to-End Platform**: Provides the full stack—from regulatory compliance and custody to pre-built UI and back-office operations—reducing legal and operational friction for partners. [atomicvest.com](https://www.atomicvest.com/)
- **Multi-Product Offering**: Combines brokerage, wealth management, and cash management in a single API, allowing clients to offer a comprehensive financial suite without multiple vendors.
- **Strong Partner Ecosystem**: Y Combinator alumni with backing from top-tier fintech VCs (QED, Anthemis) and strategic partnerships with major platforms like Aspire.

## Strategic Focus
- **European Expansion**: Following the acquisition of Groene Hart Financiële Diensten, Atomic is actively building out its presence and team in the EU. [linkedin.com](https://www.linkedin.com/company/atomicvest)
- **Partnership Growth**: Deepening integrations with major fintech platforms (e.g., Aspire, Bolt) to embed treasury and wealth solutions into existing financial operating systems. [linkedin.com](https://www.linkedin.com/company/atomicvest)
- **Product Breadth**: Continuing to expand the range of investment products (alternatives, international markets) and automated wealth management tools. [atomicvest.com](https://www.atomicvest.com/)

## Why Work Here
- **Mission-Driven Fintech**: Opportunity to work on critical financial infrastructure that aims to democratize wealth-building globally.
- **Strong Engineering Culture**: The company is engineering-heavy (13 of 44 employees are in technical roles) and uses a modern, developer-first approach. [linkedin.com](https://www.linkedin.com/company/atomicvest)
- **Global & Remote-Friendly Team**: Employees are distributed across 12 countries (US, Argentina, India, Spain, UK, Germany, Canada, etc.), suggesting a remote or hybrid-friendly culture. [linkedin.com](https://www.linkedin.com/company/atomicvest)
- **High-Impact Role**: Small team (44 people) with ambitious goals and major partnerships (Aspire, Bolt) means individual contributors have significant ownership and impact.
- **Notable Perks & Environment**: Backed by Y Combinator and top fintech VCs; SOC-2 compliant with a strong emphasis on security and compliance. Active job postings include a Director of Business Development (EU) and a Backend Software Engineer. [jobs.ashbyhq.com](https://jobs.ashbyhq.com/atomic-invest)

## Sources
1. [atomicvest.com](https://www.atomicvest.com/)
2. [linkedin.com](https://www.linkedin.com/company/atomicvest)
3. [cbinsights.com](https://www.cbinsights.com/company/atomic)
4. [prnewswire.com](https://www.prnewswire.com/news-releases/aspire-and-atomic-partner-to-launch-high-yield-treasury-management-platform-for-startups-302748612.html)
5. [jobs.ashbyhq.com](https://jobs.ashbyhq.com/atomic-invest)

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