Staff Backend Engineer

UK - (Remote / London Office)
Engineering – Engineering (Gateway) /
Permanent Full Time /
Remote
Tessian protects every business’s mission by securing the human layer 

The Tessian Cloud Email Security platform helps enterprises defend against email attacks, protect against data loss and respond to security incidents more efficiently. By combining artificial intelligence with an understanding of employee email behavior, Tessian is able to prevent complex email attacks and data loss incidents that evade Secure Email Gateways and the built in security controls of M365 and Google Workspace. 

The world's largest banks, healthcare organizations, hedge funds and law firms all use Tessian to secure their email environments, data and people whilst saving their security team time. In 2022 alone, Tessian prevented hundreds of thousands of business email compromise attacks, data loss incidents and  saved hundreds of hours of work for security teams. 

Tessian is headquartered in London and Boston with 200+ employees globally and has raised over $120m in venture capital funding from world leading investors like Sequoia, Accel, Balderton, March, Citi and Okta. Tessian was recognized as one of Fast Company’s Most Innovative Companies for 2022. More information can be found at www.tessian.com.

Backend Engineering at Tessian
We are looking for a Staff Engineer to join our Gateway Integration team. The Gateway team is a small, but critical, team responsible for one of Tessian’s key customer integrations - a Mail Transfer Agent. The MTA server is highly optimised for email traffic and integrates with M365, G-Suite and Exchange Server. You will be joining the team at an exciting time, working to deliver a new multi-tenant architecture, with significant business and customer impact.

The Gateway team’s tech stack includes:
Typescript, NodeJS & Python
SMTP protocol
Docker and AWS Lambda/ECS
High volume NoSQL databases
Terraform built environments

Responsibilities:
Engage with the world of Typescript, Python 3 and AWS, architecting robust distributed systems designed to manage immense volumes of SMTP traffic with exceptional speed.
Embrace the responsibility of maintaining and supporting our essential business systems, always mindful of the interplay between scale, latency, and cost.
Take on the complex task of processing highly sensitive email traffic, a challenge that will refine your skills in data security and handling.
Cultivate a supportive environment by providing thoughtful, actionable feedback, fostering growth and development among team members.

Qualifications:
Set technical direction for the team and understand what “good” looks like, maintaining a high level of technical quality across the team.
Bringing experience of working at scale, and having seen and solved diverse technical challenges in your career.
Product focus: you understand deeply how customers and the wider org are impacted by your decisions, and the work of those you influence.
Able to “see around corners” and proactively identify problems before they slow us down.
Excellent communicator, able to empathetically communicate and constructively challenge in both technical and non-technical contexts to a diverse audience.

If you're not sure that you exactly fit all of the above criteria, please do get in touch anyway. We're always willing to speak to great candidates even if you don't feel you meet every criteria listed!

Tessian is an equal opportunity employer, committed to equality and diversity amongst both our employees and prospective applicants. The Human Layer we're securing is diverse, and we know we need to be diverse and inclusive to successfully create HLS that reflects this. You can read our equality and diversity statement here.

As part of our commitment to equality and diversity, we're also a corporate member of the WISE Campaign for gender equality in STEM & we're a founding member of the WEDS network driving diversity & inclusion in startups.

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