At a Glance
- Tasks: Design and optimise server-side systems and APIs for cutting-edge AI products.
- Company: Join Alignerr, a leader in AI infrastructure with a remote-first culture.
- Benefits: Flexible hours, competitive pay, and the chance to work on impactful projects.
- Other info: Collaborate globally and enjoy freelance autonomy with potential for ongoing work.
- Why this job: Shape the future of technology by building AI systems that matter.
- Qualifications: Proficient in back end languages and familiar with cloud platforms.
About The Role
What if the code you write could directly power the AI systems shaping how millions of people interact with technology? We're looking for Back End Developers based in London to design, build, and optimize the server‑side systems and APIs that drive cutting‑edge AI products — from data pipelines and model‑serving infrastructure to scalable microservices that handle real‑world traffic at scale.
This is a fully remote, flexible contract role. Whether you're a seasoned engineer looking for meaningful project work or a strong developer ready to apply your skills to AI‑adjacent infrastructure, this is your chance to build things that matter.
- Organization: Alignerr
- Type: Hourly Contract
- Location: Remote
- Commitment: 10–40 hours/week
What You’ll Do
- Design, develop, and maintain robust back end services, APIs, and data pipelines
- Build scalable, high‑performance server‑side architecture to support AI training and inference workloads
- Write clean, well‑documented, and testable code following engineering best practices
- Integrate with databases, message queues, cloud services, and third‑party APIs
- Optimize system performance, reliability, and scalability as usage grows
- Collaborate asynchronously with distributed teams of engineers, researchers, and product leads
- Troubleshoot production issues, conduct code reviews, and contribute to architectural decisions
- Work independently on task‑based and project‑based assignments on your own schedule
Who You Are
- Proficient in one or more back end languages — Python, Go, Java, Node.js, Rust, or similar
- Solid understanding of RESTful API design, microservices architecture, and distributed systems
- Experienced with relational and/or NoSQL databases (PostgreSQL, MongoDB, Redis, etc.)
- Comfortable working with cloud platforms such as AWS, GCP, or Azure
- Familiar with version control (Git), CI/CD pipelines, and containerization (Docker, Kubernetes)
- Strong problem‑solving skills and the ability to debug complex systems independently
- Self‑motivated, reliable, and effective when working asynchronously without close supervision
- Clear communicator who can document decisions and collaborate across time zones
Nice to Have
- Experience building infrastructure for machine learning or AI systems
- Familiarity with data processing frameworks (Apache Kafka, Spark, Airflow, or similar)
- Background in performance optimization, caching strategies, or high‑throughput systems
- Knowledge of authentication, authorization, and security best practices
- Experience with serverless architectures or event‑driven design patterns
- Contributions to open‑source projects or a strong portfolio of personal/professional work
Why Join Us
- Work on cutting‑edge AI infrastructure projects alongside leading research labs
- Fully remote and flexible — set your own hours and work from anywhere
- Freelance autonomy with access to meaningful, technically challenging work
- Build systems at the intersection of software engineering and artificial intelligence
- Collaborate with a global network of talented engineers and researchers
- Potential for ongoing work and contract extension as new projects launch
Back End Developer (AI Infrastructure) employer: Alignerr
Alignerr is an exceptional employer that champions innovation in healthcare through AI, offering a dynamic remote work environment that fosters collaboration and creativity. Employees benefit from a culture of continuous learning and professional development, with ample opportunities to grow within the organisation while contributing to groundbreaking projects that have a real impact on clinical research. Join us to be part of a forward-thinking team dedicated to transforming healthcare for the better.
StudySmarter Expert Advice🤫
We think this is how you could land Back End Developer (AI Infrastructure)
✨Make Your Portfolio Shine
As a freelancer in software development, your portfolio is your bread and butter. Showcase not only your completed projects but also your coding skills on platforms like GitHub or GitLab. This visibility can lead to clients reaching out to you directly!
✨Join Developer Communities
Get involved in developer communities like Stack Overflow or Reddit's r/programming. Contributing to discussions, sharing your knowledge, or even helping others can expand your network and lead to freelance opportunities. Plus, it keeps you in the loop about what’s trending in software development.
✨Freelance Platforms Are Your Friend
Sign up for popular freelance platforms such as Upwork or Freelancer. They’re filled with people looking for talent like yours! Don’t forget to personalise your pitch to each potential client, highlighting how your unique skills can solve their specific problems.
✨Utilise Your Network
Don’t hesitate to reach out to your existing contacts - you never know who might need your services or can refer you to someone who does. Personal connections can lead to more reliable gigs than cold applications. And we're here to help too! If you're looking for freelance opportunities, check out opportunities listed on our website.
We think you need these skills to ace Back End Developer (AI Infrastructure)
Some tips for your application 🫡
Showcase Your GitHub Projects:When applying for a freelance software engineering gig at Alignerr, make sure to include your GitHub link in your application. Highlighting your code repositories, contributions to Open Source, and any personal projects can really set you apart and give us insight into your skills and coding style.
Tailor Your CV with Relevant Skills:In software development, the specifics matter! Make sure your CV lists the programming languages and technologies you excel at. Focus on the ones that align with the projects Alignerr is working on. Listing your tech stack clearly will help us understand how you fit into our team.
Include a Portfolio of Your Work:A solid portfolio is a must when applying for freelance roles. Include links to any apps, websites, or software you've developed. Highlight any projects that reflect a strong user experience, efficiency, or innovative solutions—this is your chance to shine and show us what you can bring to the table!
Mention Your Availability and Rates:Since this is a freelance role, we want to know when you’re available and what your rates are like! Be upfront about your typical work hours and project timelines. This transparency will help us see if we can sync up for future projects at Alignerr.
How to prepare for a job interview at Alignerr
✨Showcase Your Code Wizardry
Since you're going for a freelance role in software engineering, have a solid portfolio ready to flaunt your best work. Include projects that highlight your coding skills, frameworks you excel in, and any problem-solving feats you've pulled off. This is your chance to shine, so choose pieces that reflect your unique style and expertise!
✨Prepare for Technical Challenges
Freelance gigs often involve tech assessments or coding challenges, so be ready to tackle some hands-on problems. Brush up on common algorithms, data structures, and any languages/frameworks relevant to the role at Alignerr. Being comfortable with platforms like HackerRank or LeetCode can give you an edge and showcase your skills under pressure!
✨Be Clear About Your Rates and Flexibility
As a freelancer, be prepared to discuss your rates upfront. It's crucial to communicate your pricing structure clearly and whether you're open to negotiation. Do your homework on industry standards to ensure you pitch a fair and competitive rate that reflects your skills and experience!
✨Understand Their Tech Stack
Before the interview, get familiar with the tools and technologies used at Alignerr. Whether it's a particular framework or a specific coding methodology, being knowledgeable about their tech stack not only shows your interest but also helps you present how you could fit seamlessly into their existing projects. Demonstrating you’ve done your homework can set you apart from other candidates!
