Senior Software Engineer – AI Tools | Data Engineering | Experienced Hire

Published October 25, 2026 · Updated October 27, 2026

$225,000–$250,000US · city not listedOn-siteSenior3d ago

A senior, hands-on software engineer will independently architect and deploy production-grade AI agents that automate workflows for developers, quants, and traders.

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View posting at Susquehanna International Group

At a glance

Posted base pay

$225K–$250KAbove the median

Median $187K

This job$225K–$250KTypical senior FDE payMiddle 50% of 1,826 postings$160K–$216K

The work

Builds for teams inside the company

Balance

Mostly building
Mixed
Mostly pre-sales or support

Project stages

Pre-sales (not covered)
Proof of concept (not covered)
Implementation
Operations (not covered)

Coding: Writes production code
Builds for: Internal teams
Level: Senior
Role: Individual contributor

What they ask for

Experience

5+ yearssoftware engineering

Background

Software engineering

Tools

Python
LangChain
LangGraph
Pinecone
Chroma
pgvector
RAG
LLM agents

Less common in FDE jobs

Who you build for: Internal teams14%
Company size: About 1,001–5,000 people17%
On-site37%

Share of US FDE postings that state each fact.

What you’ll do

Design and implement autonomous agents for multi-step internal workflows.
Build production RAG architectures using structured, permissioned data.
Develop agent memory, orchestration, and inter-agent communication.
Define tool schemas and translate stakeholder needs into deterministic agent behaviors.

What you’ll bring

5–10+ years of software engineering experience.
Expert-level Python, including async, typing, packaging, and testing.
Production experience building AI-powered applications, automation platforms, or agentic systems.
Experience building agents that interact with APIs, tools, codebases, and shell environments.

About Susquehanna International Group

Privately held global trading firm that uses quantitative research and technology to trade financial products and provide liquidity across markets.

Unknown · 2000–5000 people

View posting at Susquehanna International Group

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Pay and conditions

Posted pay: $225,000–$250,000
Pay details
The annual base pay range for this role is $225K - $250K + discretionary bonus + benefits.
Location: US · city not listed
Work arrangement: On-site
Experience requirements: 5+ years: software engineering (required)

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