Senior Python Engineer

Castleisland; Greater London; On-site; GBP 70,000 - 90,000; Full time

Job summary

A mission-driven financial solutions startup is seeking a Backend Engineer to design and maintain backend systems that enhance financial access in Latin America. You will build infrastructure for customer support bots and fincrime AI agents, while focusing on creating clean, maintainable code. With a requirement of 5+ years in software engineering and proficiency in Python, this role represents a chance to make a significant impact in the fintech sector through innovative solutions. Competitive salary and equity bonuses are offered.

Benefits

Competitive salary

Sign-on equity bonus

Discretionary performance equity bonus

Latest technology to work with

Strong team support for skill improvement

Qualifications

• 5+ years of experience as a software engineer, with 3+ years using Python as the primary language.
• Hands-on experience in designing and building distributed systems.
• Strong communication skills, verbally and written in English.

Responsibilities

• Build infrastructure for customer support bots and fincrime AI agents.
• Develop business logic with clean code focusing on maintainability.

Skills

Python

Distributed systems

Postgres

English (fluent)

Education

Academic background in STEM

Tools

AWS

Kubernetes

GitLab

Job description

Do you want to build robust systems that empower financial freedom? Join DolarApp, a mission-driven startup revolutionizing access to dollar-based financial solutions across Latin America. As a Backend Engineer, you’ll design, develop, and maintain scalable, secure, and high-performing backend systems that power our innovative products. You’ll collaborate with a talented team to create solutions that drive financial inclusion and transform the way people manage their money. If you’re excited to solve complex challenges and make a meaningful impact in a fast-growing company, we’d love to hear from you!

What you’ll be doing

• You will be responsible for building agentic infrastructure that will power our operations - you will build customer support bots and fincrime AI agents that will redefine how fintech operations are done
• You will follow a pragmatic approach to develop our business logic, focusing on clean code, with emphasis on maintainability and fast turnaround with TDD, DDD and continuous integration & delivery

Minimal requirements

• 5+ years of experience working as a software engineer with 3+ years of engineering with Python as your primary language
• Hands‑on experience designing and building distributed systems in Python
• Experience working with Postgres (or other relational) database
• An academic background in STEM
• Quick learner with an ambitious and results driven personality, with excellent communication skills (english fluency, verbal and written)

Nice to haves

• Experience with LangChain & LangGraph
• Experience with LLM APIs (OpenAI, Google or Anthropic)
• Experience with AWS, K8s, Gitlab, monitoring, and alerting

Benefits

• Competitive salary and sign‑on equity bonus
• Discretionary performance equity bonus
• Latest technology to work with
• Strong team that will help you improve your skills
• Own the development process end‑to‑end and deliver customer impact

About UsAt DolarApp we strive to change the way hundreds of millions of people in Latin America approach their everyday finances

We are a product‑oriented company: do not expect to be working on legacy products but building world‑class financial products from the ground up

We’ve most talented people out there who have done it before – and we want you to join them.