1,384,975open jobs
80,376companies
206,733added this week
Browse all
Salary
≈ $144k – $291k per year (Estimated)
Location
Hybrid (New York, United States)
Seniority
Principal · 10+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 9, 2026. First seen by Alion on Feb 3, 2026. ION Group scores C on the Alion truth index.

Overview
Company
Impact
Profile match
ION Group is a financial technology and data company headquartered in London that provides trading, analytics, treasury, commodities and core banking software, plus credit information services, to banks, central banks, trading firms, governments and corporations. Built largely through acquisitions, it reports more than 13,000 employees in over 80 offices serving some 4,800 customers, with businesses that include the Italian banking IT provider Cedacri, the capital markets consultancy Lab49 and the news service Debtwire. It hires Java, .NET, Python and React developers and consultants, graduate software, cloud and AI engineers, security and compliance specialists and financial reporters.

Lab49 is an award-winning specialist consultancy that creates bespoke technology in partnership with the most important companies in finance. We were founded in 2002 to bring Silicon Valley solutions to Wall Street’s door. Since then, we have worked on successive waves of technological change, including distributed computing, high-speed automation, enterprise UX and digital distribution (for which Lab49 was among the first significant practices established on Wall Street), DevOps, cloud and data science.

Today, we are an established partner in financial markets, having delivered hundreds of projects for clients including all the world’s tier-one investment banks and many of the largest buy-side firms globally.

Being part of Lab49 means bringing your drive and creativity into an environment where your contributions will make immediate impact. Engineers will work in cross functional teams, consulting directly with our clients, shaping not only technical solutions to business problems but delivering them into production.

Currently LAB49 is looking for a Principal Full-Stack Developer will play a critical leadership role on a key project for a strategic Lab49 client - a global asset management powerhouse. Working in a collaborative cross functional project team, with direct client-facing interactions, you will have an opportunity to lead a team of engineers and build modern digital products.

What you’ll be doing:

  • Partnering with our client to lead the design and build of a structured products trading platform using modern development technology and techniques. You will be responsible for managing engineering deliverables, and the relationships with other key contributors to deliver great software.
  • Design, document, and plan for the technical implementation and delivery of working software into production.
  • Act as a hands-on engineer and architect to support ongoing project work. Lead and actively participate in projects, serving as a role model for project teams and collaborating with other practices to ensure successful outcomes.
  • Partner with client counterparts and stakeholders to maintain and build relationships, maintaining a commercial approach. Develop strong relationships with clients as a strategic partner and technical advisor, contributing to expanding our footprint and securing follow-on work.

What you should have:

  • 10+ years of solid hands-on experience with Python or C# development.
  • Hands-on experience with React and modern front-end state management.
  • Extensive experience architecting solutions on AWS, including Terraform and Docker.
  • Proven track record operating effectively inside large, complex organizations (e.g., Tier-1 Investment Banks or Global Asset Managers).
  • Deep understanding of SQL and data persistence strategies at scale.
  • BS in Computer Science or equivalent experience.
  • Expert-level knowledge of, and strong demonstrated interest in, global financial markets and financial products.
Free account
Stop reading job ads. Get the ones that fit.
One free account turns this page into a shortlist built around your stack, your level and your pay.
Match on every job. Stack, seniority, pay and location, scored against your profile.
1,384,975 open roles. Read straight off company career pages, refreshed every day.
Unlimited applications. Every one you send is tracked in one place, on-site or on a company board.
3 tailored CVs a month. Rewritten for the exact job you are applying to. Included free.
Create a free account Continue with Google
Free forever. No card. Under a minute.

Your match

How well do you fit this role?
Two answers are enough for a real match. No account needed.
Check my fit
Answers stay in this browser until you create an account.

Recommended for you based on this role

Backend
Similar stack
Same company
New York
$81k – $142k per year • Equity • Hybrid • Full-Time • 7+ years exp • Bachelor's Degree • Parsippany
JavaScript
TypeScript
C#
C#
.NET
Frontend
Angular
DevOps
GCP
CI/CD
Management
Agile
QA
Rest-Assured
Apply
≈ $241k – $487k per year (Estimated) • In office • Bachelor's Degree • Cupertino
Python
Go
Rust
C++
C++
PyTorch C++
AI/ML
JAX
PyTorch
TPU
Machine Learning
DevOps
Kubernetes
Apply
≈ $229k – $462k per year (Estimated) • In office • Bachelor's Degree • Seattle
Python
Go
Rust
C++
C++
PyTorch C++
AI/ML
JAX
PyTorch
TPU
Machine Learning
DevOps
Kubernetes
Apply
≈ $282k – $513k per year (Estimated) • In office • 10+ years exp • Bachelor's Degree • Cupertino
C++
AI/ML
Quantization
Multimodal AI
AI Agents
DevOps
RTOS
Linux
Robotics
ROS
Sensor Fusion
Visual-Inertial Odometry
Apply
$90k – $170k per year • Equity • Remote (United States) • Full-Time • 7+ years exp • New York
JavaScript
Java
TypeScript
C#
Node JS
Java
Spring Boot
C#
.NET
AI/ML
Model Context Protocol
AI Agents
RAG
Synthetic Data
Agentforce
A2A
Knowledge Graph
Agentic Workflows
Tool Use
Copilot Studio
Frontend
Angular
Apply
Remote (Pakistan)
SQL
PowerShell
Bash
Databases
PostgreSQL
Redis
Amazon Aurora
DevOps
Terraform
Helm
Azure DevOps
GitHub Actions
OpenTelemetry
CloudFormation
Azure
CI/CD
Jenkins
AWS
Kubernetes
Platform Engineering
Bicep
Amazon EKS
Azure AKS
AWS Lambda
FinOps
Amazon S3
IAM
Amazon CloudWatch
Amazon EventBridge
API Gateway
Windows
DNS
Cybersecurity
Least Privilege
SBOM
Microsoft Defender for Cloud
Microsoft Entra ID
PKI
SIEM
Cryptography
Vault
Apply
Senior BI Developer 8 days ago
≈ $14k – $28k per year (Estimated) • Hybrid • Full-Time • 4+ years exp • PhD • Hyderabad
Python
SQL
PowerShell
C#
Databases
Databricks
Microsoft Fabric
DevOps
Azure
CI/CD
Git
Analytics
Power BI
Dimensional Modeling
Apply
≈ $26k – $54k per year (Estimated) • In office • Full-Time • 10+ years exp • Bachelor's Degree • Chennai • Bengaluru • Hyderabad
Python
JavaScript
TypeScript
AI/ML
Copilot
AutoGen
LangChain
Function Calling
AI Agents
Semantic Kernel
AWS Bedrock
CrewAI
RAG
Google AI Studio
Agentic Workflows
Multi-Agent Systems
Tool Use
DevOps
Rest API
GCP
Azure
AWS
Management
ServiceNow
ITSM
Apply
≈ $57k – $147k per year (Estimated) • In office • Full-Time • 8+ years exp • Cairo
Python
PowerShell
Bash
Databases
Oracle
DevOps
Terraform
Puppet
Ansible
Red Hat
Podman
Chef
Datadog
Prometheus
CI/CD
Windows Server
Docker
Grafana
SaltStack
Configuration Management
Incident Management
Linux
Windows
DNS
DHCP
VPN
Cybersecurity
ISO 27001
Microsoft Defender
CIS Benchmarks
PCI DSS
SOC 2
Active Directory
Cryptography
Vault
Management
ServiceNow
ITIL
ITSM
Apply
≈ $15k – $34k per year (Estimated) • Remote (India) • Full-Time • 10+ years exp • Bachelor's Degree • India
Python
Java
AI/ML
Hadoop
Spark
Scikit-learn
Computer Vision
NLP
TensorFlow
PyTorch
Anomaly Detection
Edge AI
Machine Learning
DevOps
GCP
Azure
CI/CD
Git
AWS
Docker
Kubernetes
Management
Service Desk
Apply
$170k – $200k per year • Hybrid • Full-Time • 8+ years exp • Bachelor's Degree • New York
Python
SQL
C#
DevOps
Terraform
AWS
Docker
Apply
≈ $141k – $286k per year (Estimated) • Hybrid • Full-Time • 10+ years exp • Bachelor's Degree • New York
Java
DevOps
Azure
Apply
In office • Full-Time • Noida
Management
Agile
Apply
≈ $15k – $37k per year (Estimated) • In office • Full-Time • 8+ years exp • Noida
JavaScript
Java
TypeScript
Java
Spring Boot
AI/ML
Copilot
Claude Code
Frontend
React.js
DevOps
Rest API
Terraform
CI/CD
Git
AWS
Docker
Kubernetes
Management
Agile
Apply
≈ $15k – $37k per year (Estimated) • In office • Full-Time • 8+ years exp • Noida
JavaScript
Java
TypeScript
Java
Spring Boot
AI/ML
Copilot
Claude Code
Frontend
Angular
DevOps
Rest API
Terraform
CI/CD
Git
AWS
Docker
Kubernetes
Management
Agile
Apply
$200k – $220k per year • Hybrid • 5+ years exp • New York
Python
Go
JavaScript
Java
C#
Frontend
Svelte
Next.js
React.js
DevOps
GCP
CI/CD
AWS
Docker
Kubernetes
Apply
$136k – $253k per year • Equity • Hybrid • Full-Time • 6+ years exp • Toronto • Frisco • New York
Python
JavaScript
TypeScript
AI/ML
Model Context Protocol
Prompt Engineering
AI Agents
LLM
RAG
A2A
Agentic Workflows
Frontend
React.js
Apply
Software Engineer, SDK 11 hours ago
≈ $80k – $195k per year (Estimated) • In office • Full-Time • New York • Seattle
Python
Go
JavaScript
AI/ML
Gemini
LLM
Braintrust
OpenAI
Anthropic
DevOps
OpenTelemetry
CI/CD
Cloudflare
Wi-Fi
Management
Notion
Stripe
Apply
Appellate Attorney 9 hours ago
Hybrid • New York
Apply
$110k – $130k per year • In office • Full-Time • 2+ years exp • Columbia • New York
Apply
See all jobs
This is one of many
1,384,975 more open roles from verified company boards, updated every day.