Senior Back End Software Engineer in London
Senior Back End Software Engineer

Senior Back End Software Engineer in London

London Full-Time 36000 - 60000 ÂŁ / year (est.) No home office possible
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At a Glance

  • Tasks: Design and develop high-quality software solutions that make a real-world impact.
  • Company: Join Epistemix, a forward-thinking tech company focused on innovative data-driven decision-making.
  • Benefits: Enjoy flexible time off, equity options, and comprehensive health benefits.
  • Why this job: Be part of a collaborative team using cutting-edge technology to solve meaningful problems.
  • Qualifications: 7+ years in back-end development with expertise in Python and AWS.
  • Other info: Fully remote role with opportunities for growth in a dynamic environment.

The predicted salary is between 36000 - 60000 ÂŁ per year.

Join to apply for the Senior Back End Software Engineer role at Epistemix. Our software engineers at Epistemix show a clear passion for quality and love to bring software to life. You are energized by the idea of building something new and want to work on problems that matter. In order to do this job well, you must be a curious and eager problem solver with a hunger for building well‐designed, high‐quality solutions. You have a passion for great work and strive to produce simple solutions to complex problems. Knowing there are always multiple answers to a problem, you know how to engage in a constructive dialogue to find the best path forward.

About Epistemix: Epistemix helps organizations forecast outcomes and manage risk by modeling how people behave. Our platform consists of two core products: Populus, which provides access to realistic, high‐resolution synthetic population data, and Polaris, which enables scenario planning through advanced data science and simulation. Together, they empower customers to evaluate the potential impact of strategies before deploying them in the real world. Organizations across healthcare, consumer industries, insurance, and government use Epistemix to reduce uncertainty, optimize decisions, and accelerate time to value.

Responsibilities:

  • Design, develop, and maintain clean, testable, and highly maintainable code, ensuring top‐tier performance and reliability.
  • From initial requirements gathering to deployment and ongoing maintenance, take full ownership of the software development lifecycle, ensuring seamless delivery and operation.
  • Design, build, test and deploy a highly scalable and resilient system architecture that supports current needs and future growth.
  • Define the technical direction for engineering solutions, actively collaborating with internal teams to ensure technological advancements are perfectly aligned with the company's strategic goals.

Qualifications:

  • Bachelor's degree in Computer Science, Software Engineering, or related field, or equivalent work experience.
  • 7+ years of back‐end software development experience, with a significant portion in a senior role.
  • Expert proficiency in Python, particularly with FastAPI.
  • Strong experience with TypeScript for backend development (Node.js/NestJS experience is a plus).
  • Deep hands‐on experience with AWS cloud services, including but not limited to EC2, EKS, Lambda, S3, RDS, DynamoDB, SQS, SNS, CloudWatch, and IAM.
  • Proven experience designing, building, and operating microservices architectures.
  • Extensive experience with Kubernetes for container orchestration.
  • Expertise in Infrastructure as Code (IaC) using Terraform.
  • Hands‐on experience with Atlantis for Terraform pull request automation.
  • Demonstrated experience or strong understanding of data science orchestration platforms, such as Prefect.io.
  • Solid understanding of relational and NoSQL databases, including advanced querying, optimization, and data modeling.
  • Experience with API design principles (RESTful, GraphQL) and security best practices (OAuth2, JWT).
  • Strong understanding of distributed systems concepts, asynchronous processing, and message queues.
  • Experience with CI/CD pipelines and tools (e.g., GitHub Actions, Jenkins).
  • Strong communication and interpersonal skills, with the ability to articulate complex technical concepts clearly.
  • Ability to work effectively in a fast‐paced, agile environment.

Why Join Epistemix? By joining Epistemix, you will become part of a collaborative and rapidly growing team that values curiosity and creativity. We are fully remote, with team members in the United States and Europe.

  • Equity & Incentives – Participation in our stock option program.
  • Flexible Time Off – Autonomy to manage your schedule and work‐life balance.
  • Health, Welfare and 401(k) Programs – Eligibility for benefits (for U.S. employees).
  • Meaningful Impact – Apply your creative talents to revolutionize data‐driven decision‐making and make a real‐world difference.

This is a remote position open to applicants located in the United States. Candidates must possess the legal right to work in their intended work location, as we are currently unable to sponsor or transfer employment visas for any country, including the United States.

Seniority level: Mid‐Senior level. Employment type: Full‐time. Job function: Engineering and Information Technology. Industries: Software Development.

Senior Back End Software Engineer in London employer: Epistemix

At Epistemix, we pride ourselves on fostering a dynamic and inclusive work culture that encourages innovation and collaboration among our fully remote team. As a Senior Back End Software Engineer, you will not only have the opportunity to work on impactful projects that shape data-driven decision-making but also enjoy flexible time off, equity participation, and comprehensive health benefits, all while being part of a rapidly growing company committed to making a meaningful difference in the world.
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Contact Detail:

Epistemix Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Back End Software Engineer in London

✨Tip Number 1

Network like a pro! Reach out to your connections in the industry, attend meetups, and engage with online communities. You never know who might have the inside scoop on job openings or can refer you directly.

✨Tip Number 2

Show off your skills! Create a portfolio showcasing your best projects, especially those that highlight your back-end expertise. This is your chance to demonstrate your problem-solving abilities and passion for quality work.

✨Tip Number 3

Prepare for interviews by practising common technical questions and coding challenges. Use platforms like LeetCode or HackerRank to sharpen your skills. Remember, confidence and clarity in your thought process can set you apart!

✨Tip Number 4

Apply through our website! It’s the best way to ensure your application gets noticed. Plus, it shows you’re genuinely interested in joining our team at Epistemix and contributing to our mission.

We think you need these skills to ace Senior Back End Software Engineer in London

Python
FastAPI
TypeScript
Node.js
NestJS
AWS Cloud Services
EC2
EKS
Lambda
S3
RDS
DynamoDB
SQS
SNS
CloudWatch
IAM
Microservices Architecture
Kubernetes
Infrastructure as Code (IaC)
Terraform
Atlantis
Data Science Orchestration Platforms
Prefect.io
Relational Databases
NoSQL Databases
API Design Principles
RESTful
GraphQL
Security Best Practices
OAuth2
JWT
Distributed Systems Concepts
Asynchronous Processing
Message Queues
CI/CD Pipelines
GitHub Actions
Jenkins
Communication Skills
Interpersonal Skills
Agile Environment

Some tips for your application 🫡

Show Your Passion: When writing your application, let your enthusiasm for software engineering shine through! We love candidates who are excited about building new solutions and tackling complex problems, so don’t hold back on sharing your passion.

Tailor Your Application: Make sure to customise your CV and cover letter to highlight your relevant experience with Python, FastAPI, and AWS. We want to see how your skills align with the role, so be specific about your past projects and achievements!

Be Clear and Concise: Keep your application straightforward and to the point. We appreciate clarity, so avoid jargon and focus on communicating your experience and skills in a way that’s easy to understand. Remember, less is often more!

Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it shows you’re keen to join our team at Epistemix!

How to prepare for a job interview at Epistemix

✨Know Your Tech Stack

Make sure you’re well-versed in the technologies mentioned in the job description, especially Python and FastAPI. Brush up on your AWS services knowledge and be ready to discuss how you've used them in past projects.

✨Showcase Problem-Solving Skills

Prepare examples of complex problems you've solved in your previous roles. Be ready to explain your thought process and how you arrived at your solutions, as this role values curiosity and effective problem-solving.

✨Understand the Company’s Mission

Familiarise yourself with Epistemix's products and their impact on decision-making. Being able to articulate how your skills can contribute to their mission will show your genuine interest in the role and the company.

✨Practice Communication

Since strong communication skills are essential, practice explaining technical concepts in simple terms. This will help you engage in constructive dialogue during the interview and demonstrate your ability to collaborate effectively.

Senior Back End Software Engineer in London
Epistemix
Location: London

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