Principal Software Engineer EV Charging

Perfectstormsw; United Kingdom; Hybrid; GBP 60,000 - 80,000; Full time

Job summary

A technology start-up based in Bicester is seeking a Lead Software Engineer to design and deliver their IoT and cloud software platform. The role involves building connectivity for ultra-fast chargers and collaborating with product and electronics teams. Candidates should have over 5 years' experience in IoT, strong skills in relevant protocols, and proficiency in cloud development. This position offers a unique opportunity to shape core technology in a fast-growing environment focusing on sustainable electrification.

Benefits

Innovative working environment

Opportunity to shape technology

Competitive salary

Qualifications

• 5+ years experience in IoT software, cloud integration or embedded systems.
• Strong skills in PLC, CAN, Modbus or similar protocols.
• Proficiency in API and cloud development.

Responsibilities

• Build IoT and cloud software for charger connectivity and monitoring.
• Create telemetry and data pipelines for data management.
• Enable secure remote control and bi-directional communication.

Skills

IoT software experience

Cloud integration

Embedded systems

PLC/CAN/Modbus protocols

API development

AWS/Azure skills

Remote control technologies

Secure firmware updates

Tools

AWS

Azure

MQTT

WebSockets

Job description

Lead Software Engineer IoT & Full-Stack

Location: Hybrid / Bicester

Type: Permanent

Salary: Competitive, market-based

TUAL Technology is an innovative, VC-backed start-up based in Bicester, developing PowerUp a high-power EV charging solution designed for grid-constrained sites. By integrating battery storage, smart energy management, and ultra-fast DC charging, TUAL delivers seamless electrification where traditional grid capacity falls short. Working with enterprise customers across Europe, TUAL is transforming the productivity and profitability of electric commercial vehicle fleets through a portfolio of intelligent, software-defined, cloud and IoT-enabled charging solutions.

The Role

We’re looking for a hands‑on Lead Software Engineer to own the design and delivery of our IoT and cloud software platform. You’ll connect our ultra‑fast chargers, manage data and remote control functions, and ensure security and scalability across our systems. You’ll work directly with the VP Product and VP Power Electronics, shaping architecture, integrations and performance turning ideas into real, working solutions.

What You’ll Do

• Build IoT and cloud software for charger connectivity and monitoring
• Create telemetry and data pipelines (PLC, CAN)
• Enable secure remote control and bi‑directional communication (MQTT/WebSockets)
• Deliver OTA firmware updates and REST APIs (OCPP/OCPI)
• Develop secure, scalable cloud infrastructure (AWS IoT, Azure, etc.)
• Collaborate closely with hardware and IoT partners to integrate systems end‑to‑end

Your Background

• 5+ years experience in IoT software, cloud integration or embedded systems
• Strong skills in PLC, CAN, Modbus or similar protocols
• Proficiency in API and cloud development (AWS/Azure, MQTT, WebSockets)
• Knowledge of secure firmware updates and encryption (TLS, AES)
• Comfortable working autonomously in a fast‑moving start‑up environment
• Background in EV charging, energy storage or industrial automation is a plus

Why Join

This is a chance to build the full IoT and cloud platform behind PowerUp from architecture to deployment. You’ll shape a core technology in a growing, well‑founded start‑up tackling real‑world challenges in electrification.