Senior Full Stack Engineer

Kallikor; Greater London; On-site; GBP 60,000 - 80,000; Full time

Job summary

A technology-driven company based in London is seeking a Senior Full-Stack Engineer to lead and innovate on their next-generation digital twin platform. You will work with technologies like React, Node, and TypeScript, driving technical direction while mentoring junior engineers. The role emphasizes quick delivery in a collaborative environment, offering the opportunity to be a key player in shaping technical solutions and supporting team development. Join a culture that values diversity and innovation.

Qualifications

• Strong proficiency in React, Node, and TypeScript.
• Experience in mentoring and developing junior engineers.
• Comfortable with ambiguity and adaptable in fast-paced environments.

Responsibilities

• Shape the future of the engineering and solution teams.
• Lead a team of full-stack engineers in collaboration with other departments.
• Mentor and grow junior engineers.

Skills

React

Node

TypeScript

Mentoring

Problem-solving

Job description

At Kallikor, we’re shaping the next generation of supply chain decision intelligence through simulation digital twins. We build powerful digital representations of real-world operations that help organisations plan, optimise, and adapt continuously in the face of complexity and change.

By combining advances in AI, simulation, and open-source technologies, our platform enables businesses to visualise, analyse, and experiment within living digital twins of their end-to-end operations. These environments allow teams to explore scenarios, test decisions, and respond dynamically. Unlocking faster, smarter outcomes with real-world impact.

You’ll join a team of deeply curious, driven individuals who care about technical excellence and meaningful progress. We’re motivated by hard problems and ambitious goals, and we challenge one another to raise the bar every day. Our foundations are rooted in pioneering technologies originally developed across gaming and defence, now applied to some of the most complex industrial systems in the world.

Kallikor operates, with a clear mission and identity, focused on transforming how global supply chains are understood and managed. Learn more at kallikor.ai.

We are seeking a curious, versatile Senior full-stack engineer with strong React, Node and TypeScript skills to build high-impact, end-to-end experiences for our next-generation digital twin platform.

Your Opportunity:

• You will be a key player in shaping the future of both your and the wider Engineering teams.
• Lead and shape the future of our solution team consisting of full-stack engineers, working closely with our Product, Modelling and DevOps teams.
• Drive our technical direction in the solution space - we have a strong technical foundation, but we are always looking to innovate further and push boundaries.
• Mentor and grow the team - with a strong focus on coaching and developing our talented junior engineers.
• Handle interdependencies with our other teams.
• Effectively balance the creative exploration of a consumer-facing experience with the need to maintain our delivery commitments.

Why you're made for this:

• You thrive on the inherent ambiguity of an early‑stage business. You can navigate around frequent changes and see the opportunity to learn and adapt our technology as we go along.
• You’re passionate about technology and how it can help deliver a great product. We use React, Node and Typescript as our core technologies and expect all our engineers to be proficient in those but if you believe there are other tools for the job, you’ll be happy to suggest and convince your team and stakeholders to adopt those.
• You feel comfortable anywhere in the stack; you’ll be given the tools and trust to work on the end-to-end solution alongside our Designers, Modellers and DevOps engineers.
• You’re experienced with coaching and mentoring a team - you don’t want to stop being hands‑on on but you also enjoy other activities (whether it’s pairing and teaching a more junior member or sitting with your product team to figure out where we’re heading in the next 3 months).
• You prioritise quick delivery: foundations are important and we’re all in when it comes to doing this right, especially when it has a lasting impact. However, the biggest risk to us is building the wrong stuff rather than building the stuff wrong. We prefer to ship quickly and learn quickly.
• You love working as part of a close‑knit group. We’re a highly collaborative team and often work together to solve complex problems and learn new skills. You proactively reach out to the wider team when there’s a need for input and encourage others to do so as well.

About Us

Kallikor is determined to foster an environment where people can do their best work and feel like they belong. We believe a healthy culture, strong values and contribution from a diverse range of individuals will help us to achieve success.

We do not discriminate based on race, ethnicity, gender, ancestry, national origin, religion, sex, sexual orientation, gender identity, age, disability, veteran status, genetic information, marital status or any other legally protected status.