Senior Fullstack Engineer

Little Journey

Job Overview

Location

Remote

Salary

GBP 75,000 - 82,000 yearly

Employment Type

Full-time

Work Arrangement

Remote

Sector

Information Technology & Software

Experience Level

Senior (5-8 years)

Application Deadline

June 3, 2026

About the Company

Little Journey is a pioneering HealthTech startup dedicated to transforming patient and participant experiences through innovative digital solutions. Founded by a pediatric anaesthetist and a human-centered product design expert, the company initially focused on preparing children for medical procedures, demonstrating significant improvements in care efficiency and patient engagement across the NHS. Building on this success, Little Journey has expanded its reach into clinical trials with its Life Science platform, Trial Flow. This global solution supports participants and their families navigating clinical trials, alleviating burdens and enhancing engagement. The company is a Series A funded organization with a collaborative, mission-driven team of approximately 30 professionals across Product & Tech, Sales & Marketing, and Operations & Delivery. Little Journey is committed to changing the future of personalized pediatric care and clinical trial participation. They foster a culture of honesty, integrity, trust, accountability, continuous learning, proactive thinking, and a deep commitment to helping others. The company actively promotes diversity and inclusion, encouraging applications from all backgrounds and striving to eliminate unconscious bias in its recruitment process.

Job Description

Little Journey is at a pivotal growth stage as a digital HealthTech company, experiencing increasing traction in clinical trials and life sciences. Significant investments have been made in the application, data, and infrastructure to support the next phase of expansion.

This role offers the opportunity to join the Product Engineering team and contribute to building reliable, scalable products and services for the health-tech platform. You will collaborate within a cross-functional, autonomous squad, taking ownership from problem definition and solution exploration to technical approach shaping, delivery, and production operations.

Beyond implementation, you will actively participate in the definition phase, clarifying requirements, identifying risks, modeling systems, and designing practical solutions. The position is ideal for an engineer who enjoys building product experiences across the full stack with a focus on usability, reliability, and maintainability.

While equal strength across all areas isn't expected, strong fundamentals, sound judgment, collaboration, and product thinking are highly valued. The technology stack includes React, Capacitor, NodeJS, GCP, TypeScript, Docker, BigQuery, Sanity CMS, GitHub, Vercel, and Bugsnag.

Reporting to the Engineering Manager, you will be part of a broader engineering team. This is a full-time position, available either hybrid in Leeds or fully remote within the UK. Please note, visa sponsorship is not provided for this role.

Required Skills

JavaScriptTypeScriptReactNodeJSAPI DesignDatabase Schema DesignCI/CDGitHub WorkflowsAutomated TestingSystem DesignAgile MethodologiesCommunication Skills

Key Responsibilities

Deliver features end-to-end: definition, implementation, testing, deployment, and monitoring
Work closely with Product and Design during the definition phase to shape problems, explore options, and design practical solutions before implementation with clear documentation for technical design & decisions
Break down ambiguous product problems into clear technical approaches, risks, assumptions, and implementation paths
Contribute to technical discovery, produce lightweight architecture/design documents, and story shaping before delivery begins
Refine stories collaboratively with the squad, helping break work down into clear deliverable subtasks and technical milestones
Build and maintain backend services and APIs that support core product workflows, scalable APIs and data access patterns for mobile and web applications
Implement and maintain automated testing including acceptance tests, unit tests, and integration tests
Ensure applications and services are observable, maintainable, and safe to operate in production
Contribute to CI/CD pipelines, release processes, and operational improvements
Participate in code reviews, incident learning, agile ceremonies, and continuous improvement
Write clean, maintainable, and well-tested code aligned to engineering standards

Qualifications

Strong experience building production software systems in modern JavaScript/TypeScript environments
Experience in frontend/mobile engineering using React and related technologies
Experience in backend/platform engineering building APIs and services in production environments
Ability to reason through system design, trade-offs, data flows, APIs, user journeys, and operational considerations
Experience contributing to technical discovery, solution design, and story shaping with Product and Design
Ability to communicate proposed solutions clearly in working sessions, written design notes, or lightweight technical documentation
Strong understanding of API design, frontend/backend integration, and scalable application architecture
Experience working in agile product teams with collaborative story refinement and iterative delivery
Experience implementing automated testing strategies including unit, integration, and acceptance testing
Confidence debugging production issues and learning from incidents
Experience writing clean, maintainable, and testable code
Good communication skills and ability to work collaboratively within cross-functional teams
Experience with healthcare technology or regulated environments (Desirable)
Experience with Sanity.io (or other headless CMS platforms) (Desirable)
Experience with mobile app release and operational processes (Desirable)
Technical skills: Docker, GCP serverless environments, Capacitor (or similar mobile frameworks) (Desirable)

Benefits & Perks

Gross salary: £75-82K per year
28 days annual leave per year (plus public holidays)
£500 annual training budget
£200 home working budget (one-off)
Up to 6% pension match (salary sacrifice)
EMI share options
Flexible working with core hours
Enhanced (family & parental) leave policies

How to Apply

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The HealthTech sector is experiencing significant expansion, driven by advancements in digital solutions for clinical trials and life sciences. This role is pivotal in shaping the future of a leading HealthTech platform, directly impacting business ROI through the development of reliable and scalable products. You will contribute to strategic technical decisions, influencing the direction of product engineering and ensuring operational excellence. Your expertise will be crucial in driving innovation and maintaining a high standard of quality within a dynamic and growing organization.