Software Engineer, Client Integrations (Hybrid – FinTech)

Stream; England; Hybrid; GBP 74,000 - 100,000; Full time

Benefits offered by this job

25 days annual leave

Private healthcare

Pension scheme

Sabbatical scheme

Volunteer leave

Equity vesting

EV salary sacrifice

Season Ticket Loan

Salary sacrifice via ThanksBen

Access to Stream

Job summary

Stream, the FinTech platform, is hiring for a Global Client Integrations engineer in London. You’ll join a team building integrations with client payroll, HR and WFM systems to connect data on work and earnings. Role focuses on launching clients, architecting, developing, and testing code, and onboarding new clients while driving platform improvements.

Hybrid work from London, 3 days in office. The tech stack includes Claude Code, Python, PostgreSQL, Snowflake and AWS, and you’ll collaborate

Qualifications

• Minimum 2 years professional software engineering using Python.
• Experience interacting with API technologies such as REST, JSON and XML.
• Understand the foundations of SQL and relational databases.
• Experience with AWS services (ECS, S3, API Gateway optional).
• Use of modern agentic coding tools.

Responsibilities

• Architect, develop, and test code that integrates with third-party payroll, HR and WFM systems.
• Support onboarding of new clients by configuring them onto existing integration frameworks.
• Maintain and enhance the integrations platform, driving system-level optimisations.

Skills

Python

REST

JSON

XML

SQL

AWS

Code tools

Tools

AWS ECS

S3

API Gateway

Job description

Stream, the FinTech platform, is hiring for a Global Client Integrations engineer in London. You’ll join a team building integrations with client payroll, HR and WFM systems to connect data on work and earnings. Role focuses on launching clients, architecting, developing, and testing code, and onboarding new clients while driving platform improvements.

Hybrid work from London, 3 days in office. The tech stack includes Claude Code, Python, PostgreSQL, Snowflake and AWS, and you’ll collaborate