Senior Software Engineer

Trebellar, Inc.; United States; Remote; USD 140,000 - 210,000; Full time

Benefits offered by this job

Competitive compensation

Employee stock options

Job summary

Trebellar, Inc. is seeking a Senior Software Engineer to own large parts of our platform, spanning data ingestion to AI-driven features.

You’ll work across the stack—from database internals to browser-based UI—and contribute beyond code to help shape product outcomes. Ideal candidates bring 10+ years building web apps, 2+ years with LLM-based applications, and a strong bias for scalable, observable systems.

Qualifications

• 10+ years experience building web applications.
• 2+ years experience building LLM based applications.
• Able to understand and analyse complex data sets and debug complex scenarios.
• Familiarity with data ingestion and data processing (real-time, batch, high-volume).
• Excellent communication and organization skills; collaborate with multiple departments.
• Self-driven in a startup environment; work independently within a team.
• Proficiency in TypeScript and common JavaScript/TypeScript stacks.
• Backend/API development experience.
• Understanding of data processing architectures.
• Familiarity with Cloud/Docker/K8s and DevOps.

Responsibilities

• Data ingestion and transformation, database optimisations, API design, and web browsing foundations.
• Designing and implementing LLM flows beyond prompt engineering.
• Collaborate with product, engineering and customer success to prioritise and deliver features.
• Interact with stakeholders, Trebellar colleagues and customers.
• Learn the domain of corporate real estate to better solve customer problems.

Skills

Web applications

LLM-based apps

TypeScript

Backend/API development

Data processing architectures

Cloud/Docker/Kubernetes

Tools

Docker

Kubernetes

Cloud platforms

Job description

About Trebellar

Trebellar is the AI platform for corporate real estate. Enterprise CRE teams use Trebellar to turn fragmented lease, space, and occupancy data into a single decision-making layer — replacing spreadsheets and guesswork with an AI-native system of record. We’re backed by Blossom Capital, with participation from Jack Altman and Semil Shah (Haystack), and we’re a small, fast-moving team building category-defining infrastructure for one of the largest, least-modernized categories of enterprise spend.

About the role

A Senior Software Engineer as part of a start-up, you will own large chunks of the problems you solve. You can be specialised in a certain layer of the stack, but you are expected to have familiarity with different technologies and programming languages from the database to the browser and everything in between (see below). You will understand the problem you are solving for the customer and proactively contribute with more than just code.

What you’ll do

• Data ingestion and transformation, database optimisations, API design, and web browsing will be some of the fundamentals in your day to day.

• Heavily based on AI and LLMs, you will be designing and implementing LLM flows beyond prompt engineering.

• You will work with your product and engineering colleagues as well as with customer success to prioritise and solve new features and customer requests.

• Interact with all stakeholders, Trebellar colleagues and customers.

• You’ll will learn the domain of corporate real estate (you don’t need to come from this background)

What we’re looking for

We seek versatile candidates with expertise in web, databases and LLMs, able to contribute across the stack.

• 10+ years experience building web applications.

• 2+ years experience building LLM based applications

• You must be able to understand and analyse complex data set, as well as debug complex scenarios.

• Familiarity with data ingestion and data processing, ideally both real time, batch and high volume.

• You have excellent communication and organization skills. As part of a growing start-up you’ll be expected to interact with stakeholders from all departments and diverse backgrounds, technical and corporate real state experts.

• You are self driven. Your work will be part of a team, but you are joining a start-up where everybody has a high degree of sufficiency once the main goals are agreed with the team.

• Proficiency in typescript and familiarity with the most common javascript/typescript stacks.

• Backend/API development skills - A solid foundation and understanding on interacting with backend services.

• Good understanding of common systems architecture for data processing.

• Familiarity with Cloud/Docker/k8s/… and related DevOps technologies

What we offer

• A small, high-context team where your ownership is visible and your impact compounds quickly.

• Competitive compensation plus employee stock options, giving you a genuine ownership stake in an early-stage business, so you share in what you help build.