Software Engineer

Software Engineer

Date: 2026-08-28T11:00:12.73

Location: Remote work, England, GB

Contract Type: Trust in Soda / Trinnovo Group

Application Deadline: 2026-09-25T11:00:12.73

Salary Range: £400 - £500 per day outside IR35

Summary

Our client is building a Law Firm Digital Twin: a working simulation of how a law firm operates, built from the firm's own data. Data from the firm's operational systems (practice management and finance, HR, client onboarding, time recording) is mined into event logs; a discrete event simulation is built and calibrated from those logs; and the firm's financial statements are reconstructed on top, so the effect of an operational change can be quantified before it is made. This role owns the product layer: the modelling studio where process models are built and edited, the scenario and experiment engine, executive dashboards, and exports. The stack is TypeScript end to end: Next.js (App Router, server components), React, Bun, Tailwind, Zustand, Recharts and d3 for charts, Postgres with row-level security for multi-tenant isolation. Development is AI-assisted as the standard working method, in a small team where everyone ships.

Key Responsibilities

• Design and build the product: the interfaces where the simulation and its data are explored, edited and presented.


• Own features end to end, from interface through server and database to deployment.


• Build the data visualization: charts and views that carry quantitative meaning for senior non-technical readers.


• Keep the product multi-tenant, configurable and maintainable as the client base grows.


• Ship continuously, with tests as the safety net, and contribute to what gets built, not just how.

Key Skills & Experience

• Above all, someone who has done analogous work: you have shipped data-dense analytics, BI or simulation product interface, where the charts carried real quantitative meaning and wrong rendering meant wrong decisions.


• A mid-level product engineer who ships end to end. Feature from intent to production personally: interface, server, schema, deployment. Shipped products with small teams count for more than years.


• Strong modern TypeScript. Fluent in the current Next.js generation (App Router, server components, edge versus node trade-offs) and React, with a preference for simple, conventional code.


• Genuine data comfort. Confident SQL and Postgres, including row-level security; able to follow a number from warehouse to chart and notice when it is wrong.


• Data-visualization judgement. Charts for non-technical executives, built with precision and restraint, in forms that fit the data.


• AI-assisted engineering as a habit (Claude Code or similar), staying current as the tools change, with judgement about where not to trust it.

Nice to Have

• BPMN-JS or other diagramming and canvas work


• Simulation, process-mining or operations-analytics products


• Multi-tenant B2B SaaS; Supabase


• WorkOS


• Professional services or legal-sector products

#s1-Gen

Software Engineer - Contract Position - HIRING ASAP Location: Remote Working Start Date: ASAP Duration: 12-Month Contract Daily Rate: £400 - £500 per day outside IR35 Summary Our client is building a Law Firm Digital Twin: a working simulation of how a law firm operates, built from the firm's own data. Data from the firm's operational systems (practice management and finance, HR, client onboarding, time recording) is mined into event logs; a discrete event simulation is built and calibrated from those logs; and the firm's financial statements are reconstructed on top, so the effect of an operational change can be quantified before it is made. This role owns the product layer: the modelling studio where process models are built and edited, the scenario and experiment engine, executive dashboards, and exports. The stack is TypeScript end to end: Next.js (App Router, server components), React, Bun, Tailwind, Zustand, Recharts and d3 for charts, Postgres with row-level security for
multi-tenant isolation. Development is AI-assisted as the standard working method, in a small team where everyone ships. Key ResponsibilitiesDesign and build the product: the interfaces where the simulation and its data are explored, edited and presented.Own features end to end, from interface through server and database to deployment.Build the data visualization: charts and views that carry quantitative meaning for senior non-technical readers.Keep the product multi-tenant, configurable and maintainable as the client base grows.Ship continuously, with tests as the safety net, and contribute to what gets built, not just how.Key Skills & ExperienceAbove all, someone who has done analogous work: you have shipped data-dense analytics, BI or simulation product interface, where the charts carried real quantitative meaning and wrong rendering meant wrong decisions. Specifically:A mid-level product engineer who ships end to end. Feature from intent to production personally: interface, server,
schema, deployment. Shipped products with small teams count for more than years.Strong modern TypeScript. Fluent in the current Next.js generation (App Router, server components, edge versus node trade-offs) and React, with a preference for simple, conventional code.Genuine data comfort. Confident SQL and Postgres, including row-level security; able to follow a number from warehouse to chart and notice when it is wrong.Data-visualization judgement. Charts for non-technical executives, built with precision and restraint, in forms that fit the data.AI-assisted engineering as a habit (Claude Code or similar), staying current as the tools change, with judgement about where not to trust it.Nice to haveBPMN-JS or other diagramming and canvas workSimulation, process-mining or operations-analytics productsMulti-tenant B2B SaaS; SupabaseWorkOSProfessional services or legal-sector products.