Senior Staff Full Stack Engineer - Sell Side

The role

This is a hands-on technical leadership role for the Origination & New Products squad. You will lead through technical direction, design, and execution to deliver new product categories and deep integrations.

What you will do

• Drive the Origination & New Products squad's technical direction on deep integrations
• Design, build, and review the hardest parts of the new-product build sequence
• Translate company targets into sequenced, deliverable plans
• Design systems for new product categories where the spec is being written as you go
• Make judgement calls on commercial risk in deal-gating tooling
• Prevent domain drift as new product categories are added
• Partner with the Engineering Manager and commercial stakeholders
• Act as a reference point for other squads regarding integration, pricing, or risk-tooling
• Contribute to engineering standards and practice
• Mentor engineers in the squad

Required qualifications

• Proven technical leadership at Staff or Senior Staff level
• Comfort operating without a spec
• Sound commercial judgement
• Deep enough platform fluency to integrate against a complex, business-critical system
• Track record leading a squad or team technically through direction and mentorship
• Evidence of influence beyond your immediate team
• Strong written and verbal communication
• Comfortable in Python, AWS serverless (Lambda, API Gateway, DynamoDB, EventBridge), and event-driven architectures

Nice to have

• Experience in energy, fintech, or another regulated, high-stakes commercial domain
• Experience taking a product or company into a new international market
• Exposure to workflow orchestration, event-driven systems, or real-time pricing engines
• Experience originating new product lines from scratch

Benefits

• Competitive salary
• Stock Options
• 25 days holiday + public holidays
• Swap public holidays for ones that matter most to you
• An extra day off for your birthday
• Remote & flexible working
• No internal meetings on Friday afternoons
• Up to £1,200 / €1,200 annually to upgrade your remote setup
• Up to £150 / €150 monthly on wellbeing

Before you apply

• Interview process normally takes around 2-3 weeks

About the company

tem is a technology company rebuilding the energy transaction to be transparent and fair. They power energy for over 4,000 UK businesses across 8,500+ sites.