---
title: 'Senior Backend Engineer at Rain Technologies Inc.'
canonical: 'https://feeny.ai/job/senior-backend-engineer-rain-technologies-inc-lisbon-5bmvdeqd31sz'
type: 'job'
last_seen: '2026-10-17'
---

# Senior Backend Engineer at Rain Technologies Inc.

- **Company:** Rain Technologies Inc.
- **Location:** Lisbon, Portugal
- **Employment:** full-time
- **Work type:** remote
- **Posted:** 2026-10-15
- **Last confirmed live:** 2026-10-17
- **Apply:** https://jobs.ashbyhq.com/rain-technologies/1d67d0a5-0608-4071-b4e2-17a990827b3a/application

**Skills:** Go, Golang, Python, RESTful APIs, SQL, NoSQL, Kafka, RabbitMQ, Flink, AWS, Azure, GCP, Serverless, Docker, Kubernetes, ECS, CI/CD, Gitlab CI, Github actions

> The Senior Backend Engineer manages the backend platform, including API integrations and distributed microservices. Responsibilities include designing scalable RESTful APIs, enforcing observability, and collaborating with international teams to support banking, payroll, and timekeeping domains.

## Job description

Rain is the world's first AI Financial Health Platform, serving 3.5 million employees at leading organizations like McDonald's, Marriott, and T-Mobile. Rain works in the background to optimize every employee's financial life to prevent shortfalls and build long-term stability. Backed by top investors including QED and Prosus, Rain has raised $150M in venture funding to fuel our next stage of hyper growth.

We are looking for a Senior Software Engineer in EMEA. This position is remote. The candidate will be responsible for managing various areas of our backend platform, including API integrations with 3rd-party vendors and partners.

As a Backend Engineer you will play a central role in making it easier for users to access Rain and build products that help users maintain positive cash availability. You will work with our international product and engineering teams to manage products in the interception of the banking, payroll and timekeeping domains. Our ideal candidate is excited to tackle tough technical challenges and looking for opportunities to contribute to our strategic thinking

## What You’ll Do

- Translate product requirements into robust technical solutions, recommend alternative approaches, and lead engineering efforts to meet ambitious targets
- Design and implement reliable systems and applications in a fully distributed micro-services architecture
- Build and maintain integrations with 3rd-party vendors and partners
- Design and implement highly available RESTful APIs supporting user-facing web and mobile applications
- Focus on creating reusable code and libraries that ensure scalability for future projects
- Enforce observability best practices, leveraging tools like logging, metrics, and alerting systems
- Create and maintain detailed technical documentation (architecture designs, APIs, workflows, and system configurations)
- Continuously monitor systems for opportunities to maximize performance and scalability

## Who You Are

- You have at least 5 years of professional experience as an engineer
- You have a strong ability to take ownership of projects, driving initiatives from concept to completion, while proactively identifying challenges and solutions
- You have excellent cross-functional collaboration and communication skills
- You’re familiar with complex large scale distributed systems

Required Technical Qualifications

- Proficient in backend languages: Go/Golang, Python
- Strong expertise in designing and developing RESTful APIs
- Expertise in SQL and NoSQL database technologies, including data model design and optimization
- Proven experience at building reliable and scalable user-facing applications
- Proficiency in message queuing systems such as Kafka (preferred), RabbitMQ, or Flink
- Familiarity with Cloud technologies: AWS/Azure/GCP, serverless, Docker, Kubernetes, ECS among others
- Effective release management experience for ensuring zero downtime and experience with CI/CD frameworks such as Gitlab CI and Github actions

Diversity, Equity and Inclusion Commitments As part of our dedication to the diversity of our workforce, Rain is committed to Equal Employment Opportunity and does not discriminate based on race, religion, color, national origin, ethnicity, gender, sex (including pregnancy), protected veteran status, age, disability, sexual orientation, gender identity, gender expression, or any unlawful criterion existing under applicable federal, state, or local laws. If you need assistance or accommodation due to a disability, you may contact us at Careers@rain.us. What’s Next Ensuring a smooth and enjoyable candidate experience is critical for us. Our interview process tends to take about 4 weeks to complete, but may fluctuate depending on the role. Learn more about our hiring process here. Don’t be afraid to let us know if you need more flexibility.

## About Rain Technologies Inc.

## Company Overview
- **One-liner**: Rain provides an earned wage access (EWA) platform that gives employees instant access to wages they’ve already earned, alongside comprehensive financial health tools.
- **Entity Type**: Private (venture-backed, Series B)
- **Headquarters**: Nashville, Tennessee, USA
- **Founded**: 2019
- **Founders**: Alex Bradford (CEO) and team

## Core Business
- **Primary industry**: Fintech – Earned Wage Access (EWA) and workforce financial wellness.
- **Target customers**: B2B – mid-market to Fortune 500 employers (employer-paid model), serving their hourly and salaried workers.
- **Mission/purpose**: “Empower people to reach financial freedom” by providing responsible, on-demand access to pay and tools for long-term financial health.

## Products & Services
- **Rain EWA**: An enterprise-grade earned wage access platform that integrates with existing payroll and HR systems. Employees can access earned wages before payday – not a loan, not credit. The platform collects minimal data (6 fields, no SSN/DOB) and uses a proprietary data-ingestion system. Includes employer-controlled guardrails, pay stub transparency, and white-glove 24/7 U.S.-based user support (response <30 seconds).
- **Financial Health Suite**: Budgeting tools, spending analysis, free tax filing, financial coaching, and balance protection – all included with the EWA service to help employees build long-term financial security.

## Market Standing
- **Valuation/Recent Funding**: Total funding raised **$489M** (PitchBook). Latest deal: **Series B of $72.4M**. Investors include 38 backers (venture capital).
- **Key Metric**: **3.5M+ employees** empowered across **1,200+ employers** and **50+ partners**.
- **Notable Investors/Partners**: Not individually listed in provided sources, but the company is venture-backed and has Fortune 500 clients.
- **Growth Signals**: 
  - Job postings trend: Monthly +420%, quarterly +246.7%, yearly +1200% (LinkedIn).
  - Reported outcomes: 2x turnover improvement after 1 year, 35% increase in timeclock compliance, 15-30% more hours worked per month, and more job applications.
  - Rapid adoption by Fortune 500 employers.

## Competitive Advantages
- **Enterprise-grade security & compliance**: SOC 1 Type 2, SOC 2 Type 2, ISO/IEC 27001 certified, end-to-end encryption, third-party audited.
- **Data-minimal model**: Collects only 6 required data fields (no SSN/DOB), the least data of any U.S. EWA provider.
- **AI-driven platform**: Proprietary data-ingestion system and AI-era execution speed, built and maintained by an in-house U.S. engineering team.
- **Employer control & retention ROI**: Keeps payroll and data in the employer’s control, with proven metrics on reducing turnover, absenteeism, and financial stress.
- **Full-service financial health**: Offers budgeting, coaching, tax filing, and other tools beyond just EWA, increasing employee engagement.

## Strategic Focus
- Continue to expand adoption among Fortune 500 and large enterprises.
- Deepen the financial health platform with AI-driven personalization and tools that go beyond “payday access.”
- Scale the U.S.-centric technology and support operations while maintaining best-in-class security and data privacy.
- Lead the industry in setting standards for responsible, compliant EWA.

## Why Work Here
- **Culture**: Values-driven culture centered on Unity, Innovation, Accountability, Empathy, and Leadership. Strong commitment to diversity, equity, and inclusion.
- **Work model**: Remote/hybrid – work from home, a cafe, or the historic dog-friendly Nashville office. Flexible arrangements aligned with productivity.
- **Benefits**:
  - Comprehensive medical, dental, vision.
  - 401(k) with diverse investment options.
  - Monthly stipend for home-office/office/professional development.
  - Wellness programs (Headspace, Wellhub).
  - Flexible time off.
- **Engineering culture**: In-house, U.S.-based engineering team building a proprietary technology platform. Emphasis on innovation and challenging the status quo.
- **Growth opportunity**: Company is in hyper-growth (1200% job posting growth year-over-year) with a mission-driven focus on financial empowerment. Impact on millions of employees.

## Sources
1. [rainapp.com](https://www.rainapp.com/) – Company homepage (product, security, metrics)
2. [rainapp.com/careers](https://www.rainapp.com/careers) – Careers page (benefits, values, culture)
3. [rainapp.com/build/about-us](https://www.rainapp.com/build/about-us) – About Us (mission, metrics, podcast)
4. [pitchbook.com](https://pitchbook.com/profiles/company/431215-75) – PitchBook profile (funding, employee count, founding date, headquarters)
5. [linkedin.com/company/rain-app](https://www.linkedin.com/company/rain-app) – LinkedIn (job postings, company page)

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- [Engineering Lead](https://feeny.ai/job/engineering-lead-rain-technologies-inc-lisbon-mx3sk3k0hj97) — Lisbon, Portugal
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