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Senior Software Engineer, Inference

Join AssemblyAI as a Senior Software Engineer to turn cutting-edge AI research into reliable customer-facing products.

Location
United Kingdom
Compensation
£120k–£145k/yr
Level
senior
Type
full time

Posted by employer 1 month ago

First seen on Joblaze 1 month ago

Last verified on the company career page 5 hours ago

Skills & Technologies

AI in the day-to-day

Engineers work between research and applied teams to productionize AI models into customer-facing APIs.

Not disclosed in this posting: years of experience, work arrangement, visa sponsorship.

Joblaze summary

In this role, the Senior Software Engineer will focus on transforming advanced AI research into practical applications by designing and deploying customer-facing APIs that support a high volume of users. Key skills include strong backend engineering experience, particularly with machine learning infrastructure, and the ability to navigate ambiguity in project timelines. This position is ideal for someone with a collaborative mindset and a genuine interest in AI/ML, suited for a mid to senior-level engineer eager to make a significant impact in a fast-growing company.

Joblaze insights

  • Listed about a month ago — first seen on Joblaze August 30, 2026. Last confirmed on AssemblyAI's careers page October 27, 2026.
  • This exact title is also open at 1 other location at AssemblyAI: North America.
  • Starts above 15% of 13 comparable senior ai/ml roles in United Kingdom we track (median $240,256 across 4 companies).
  • AI/ML appears in 43.1% of 51 comparable senior ai/ml roles in United Kingdom; APIs appears in 5.9% of 51 comparable senior ai/ml roles in United Kingdom.

Quick facts

What's the salary range?
AssemblyAI lists £120,000–£145,000 for this role.
What's the tech stack?
Joblaze extracted these technologies from the posting: AI/ML, APIs, infrastructure.
What seniority level is this role?
AssemblyAI targets senior candidates for this position.
Is this full-time or contract?
Full-time for this Senior Software Engineer, Inference role at AssemblyAI.

From the original posting

Why AssemblyAI

About the role:

We're hiring a Software Engineer to help turn cutting-edge AI research into products our customers rely on every day. You'll sit on a fast-paced engineering team between our research org and our Applied teams, taking new model capabilities from proof of concept to robust, well-documented APIs serving production traffic at scale.

What You’ll Do:

  • Design and ship customer-facing APIs that expose new model capabilities, owning them from prototype through launch and ongoing iteration.
  • Scale inference infrastructure to support our 1M+ api users
  • Partner with researchers to productionize new techniques. For example, turning a notebook or POC into something with the latency, reliability, and ergonomics customers expect.
  • Work with our customers and Applied teams to understand how users are building with our products, and feed that back into product design and research direction.
  • Contribute across the stack as needed: backend services, inference infrastructure, SDKs, internal tooling.

What You’ll Need:

  • Strong backend engineering experience, including building and supporting machine learning infrastructure and/or customer-facing APIs in production.
  • Comfort operating with ambiguity. Research timelines and product timelines don't always line up, and you're energized rather than frustrated by that.
  • Genuine curiosity about AI/ML. You don't need to be a researcher, but you should want to understand what the models are doing well enough to make good engineering decisions around them.
  • Strong collaboration skills. You'll be working daily with researchers, applied engineers, and sometimes customers, people with very different contexts and priorities, and the role only works if you enjoy that.

Pay Transparency:

AssemblyAI strives to recruit and retain exceptional talent from diverse backgrounds while ensuring pay equity for our team. Our salary ranges are based on paying competitively for our size, stage, and industry, and are one part of many compensation, benefit, and other reward opportunities we provide.

There are many factors that go into salary determinations, including relevant experience, skill level, qualifications assessed during the interview process, and maintaining internal equity with peers on the team. The range shared below is a general expectation for the function as posted, but we are also open to considering candidates who may be more or less experienced than outlined in the job description. In this case, we will communicate any updates in the expected salary range.

The provided range is the expected salary for candidates in the United Kingdom. Outside of those regions, there may be a change in the range which will be communicated to candidates throughout the interview process.

Salary range: £120,000 - £145,000

Using AI in your interview
If you’re selected for an interview, please read our Candidate AI Guidance. It explains how you can use AI at each stage of our process, from your application and take-home to the interviews themselves.

Standard company text repeated across AssemblyAI's postings is omitted here.

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