Lead Software Engineer

Job description

Lead Software Engineer | Major Legacy Transformation (NPPV3 & SC Required)

Rate: £550 per day (Inside IR35)

Location: London / Remote Hybrid

Duration: 6–12 Months

Clearance: Active NPPV3 and SC Clearance (Essential)

The Opportunity

Our client, a premier global consultancy, is seeking a Lead Software Engineer to take the helm of a business-critical modernisation programme for a major public sector body.

This is a high-impact role requiring a technical leader capable of deconstructing complex legacy architectures and rebuilding them for a cloud-native future. You will be responsible for the strategic migration from on-premise data centres to AWS, shifting from Oracle to PostgreSQL, and evolving Java EE/EJB environments into modern Spring microservices.

Technical Technical Requirements

To succeed in this role, you will need a deep background in enterprise-scale migrations:

• Java Modernisation: Extensive experience migrating legacy Java (EE/EJB) to modern versions (Spring / Java 11).
• Data & Cloud Transition: Proven track record of moving workloads from Oracle (PL/SQL) to PostgreSQL and migrating from physical Data Centres to AWS.
• Legacy OS Knowledge: Comfortable navigating environments across Red Hat Enterprise Linux 8, Oracle Solaris, and Windows Server (2008–2019).
• Geospatial Integration: Experience with GIS tools including JavaScript/OpenLayers, TileCache, and MapServer.

Mandatory Criteria

• Active Security Clearance: You must hold current, active NPPV3 and SC Clearance. We cannot consider candidates without these active clearances due to the immediate start date.
• Leadership: Experience leading technical teams through the full software development lifecycle (SDLC) within a consultancy or government framework.
• Availability: Must be available to start within 1–2 weeks.

Preferred Skills (Nice to Have)

• IBM Initiate (Master Data Management).
• Experience with Nginx, Apache Tomcat, and ETL processes.
• Exposure to Cognitec FaceVACS, MiniO, or Virtualisation technologies.

Why Apply?

This role offers the chance to lead a high-profile digital transformation that directly impacts UK infrastructure. While the role is Inside IR35, it offers a long-term engagement with a consultancy known for its prestigious project pipeline.

Extra information

Status

Open

Education Level

Secondary School

Location

London Area

Type of Contract

Full-time jobs

Published at

09-02-2026

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English