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Member of Technical Staff - Software Engineer

TesslLondon OfficeR&D
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Salary
Not listed
Job type
Full-time
Work mode
Remote
Posted
22 Sept 2026
Status
Open · checked 7d ago

About this role

Role Overview

Tessl is seeking a Member of Technical Staff - Software Engineer to join the team based out of the London Office with remote work options. This opportunity suits an experienced, independent engineer eager to build real-time AI-native workflows, tooling, and interfaces that transform how software is created and maintained.

Key Responsibilities

Design and build new features following discussions and reviews with the product department.
Build proofs of concept to demonstrate novel and creative ideas.
Quickly prototype new language integrations for code generation pipelines and plan scalable implementations.
Partner with designers to refine user experiences across user interfaces, command-line interfaces, and AI coding agents.
Integrate third-party tools, such as notification systems, to maintain focus on primary platform capabilities.
Collaborate cross-functionally to plan architectures supporting platform collaboration.
Build comprehensive end-to-end testing strategies to boost production deployment confidence.
Present technical visions for upcoming product features to the engineering group for alignment.

Requirements

Demonstrated software engineering background, generally requiring five or more years of equivalent experience.
Strong focus on code modularity, design, and structure across multiple environments.
Capability to contribute to established codebases with rigorous continuous integration rules as well as rapidly build functional prototypes.
Direct experience utilizing top-tier AI coding agents and tools to boost personal productivity and efficiency.
Previous success thriving within fast-paced, high-autonomy environments like early-stage startups.
Active daily usage of AI tools paired with a passion for experimentation and continuous learning.

Nice to Have

Background working on developer tools or AI-centric products.
Exposure to rapid prototyping settings.
Polyglot programming skills spanning multiple paradigms such as JavaScript, TypeScript, Python, C, C++, or Haskell.
Experience bridging the gap between research teams and engineering teams.
Background in building and scaling REST APIs, including those matching JSON standards.
Infrastructure familiarity covering Kubernetes configuration and CI pipeline setup.
Portfolio featuring personal or open-source projects via GitHub links.

Skills and Tools

Python
Kubernetes
TypeScript
JavaScript
C++
REST APIs
CI Pipelines
AI Coding Agents

Salary and Benefits

Competitive compensation package determined by individual skills and experience, benchmarked against current market standards.
Twenty-five days of paid holiday leave.
Comprehensive health coverage including dental and vision insurance, covering partners and dependents.
Company-matched pension plan.
Commuting stipend for team members residing outside of London.
Cycle to work program.
Brand new 10,000 square foot headquarters located in the Kings Cross AI hub in London, featuring generous catering, team lunches, and regular social events.

About the Company

Tessl operates as a fast-growing Series A startup founded by Snyk creator Guy Podjarny, backed by over $100 million in funding from prominent investors including Index Ventures, Accel, GV, and Boldstart. Recognized in Sifted’s B2B SaaS Rising 100 and AI 100 lists, the organization is currently building the context layer for AI coding agents alongside a comprehensive platform dedicated to AI-native software development. The company maintains an inclusive culture and expects team members to work from the London headquarters at least three days per week on designated anchor days.

How to Apply

Candidates should visit the official Tessl careers page to submit an application and learn more about open positions.

Skills and tech stack

PythonKubernetesTypeScriptJavaScriptC++

Questions candidates ask

What is the primary location for this role?

The position is based out of the London Office located in Kings Cross, with remote work flexibility and an expectation to work in the office at least three days a week on anchor days.

How many years of experience are required?

The role typically requires five or more years of equivalent experience as a software engineer.

What technical skills and tools are relevant for the position?

Key technical skills include Python, TypeScript, JavaScript, C++, Kubernetes, REST APIs, and the use of AI coding agents and tools.

What benefits are included with the position?

Benefits include 25 days of holiday, health insurance covering dental and vision for partners and dependents, a company-matched pension, a commuting stipend for non-London residents, a cycle-to-work scheme, and office catering.

What does the interview process involve?

The hiring process consists of an introductory call, a hiring manager chat, a take-home exercise, an on-site technical session, and a leadership discussion.

Ready to apply?

The application is on the official Tessl careers page.

Apply on company site