At a Glance
- Tasks: Lead innovative projects, solve complex problems, and mentor teams in a collaborative environment.
- Company: Join a unique organisation that values transparency and ownership.
- Benefits: Enjoy unlimited leave, life insurance, private health cover, and open salary structures.
- Other info: Dynamic culture with opportunities for growth across multiple technology domains.
- Why this job: Make a real impact while working with exceptional minds in tech.
- Qualifications: Experience in software systems, strong engineering skills, and customer engagement.
The predicted salary is between 63000 - 77000 £ per year.
- Small teams, high ownership, flat structures
- Radical compensation transparency
- Sense of ownership in collective success
- Work with exceptional people who deeply care about their craft
- A different kind of organisation
- Small teams, high ownership, flat structures
- Radical compensation transparency
- Sense of ownership in collective success
- Work with exceptional people who deeply care about their craft
The role
As a Principal Consultant, you're often the first person a customer meets to brainstorm a business problem.
You should be at home debating distributed systems with engineers and framing decisions with leadership.
You'll frame the problem with customers, shape the approach with the team, provide technical direction, and stay hands-on through delivery.
You will work in self-managing, experienced, small, and high-impact teams, solving hard problems.
This is a consulting & tech delivery role and while you will not have direct reports, you will regularly influence teams, mentor practitioners, manage stakeholders, and guide organisations through complex technology and business decisions.
What the work looks like
We can't promise which problem you'll pick up, but the menu right now looks something like this:
- Redesign a Click House schema so an ad buyer can query 85 billion rows in under two seconds, and discover that pre-exploding the rows 168x is actually the right answer.
- Keep a vehicle telemetry platform moving billions of messages a day without the Kafka consumers falling over.
- Build the engineering spine of a mobile wallet used by more than two billion people across four continents.
- Ship the data product behind peer-review submissions for one of the world's largest scientific publishers.
The list changes every quarter. The pattern doesn't: data-heavy, distributed, and often sitting on top of something that already exists and isn't perfect.
What you'll do
- Frame Problems & Propose Solutions
- Help customers find the right problem before jumping to a solution.
- Facilitate discovery sessions, architecture reviews, and technical workshops.
- Translate business goals into a technology strategy and an execution plan.
- Lead Through Technical Excellence
- Stay hands-on; contribute directly to design, architecture, implementation, and review.
- Make pragmatic calls balancing business needs, engineering quality, and delivery timelines.
- Guide teams to build scalable, resilient, secure systems and the practices that keep them that way.
- Influence, Advise, and align
- Act as a trusted advisor on technology and investment decisions; assessments, due diligence, advisory.
- Build trust and alignment across Sahaj and customer teams
- Converge competing priorities into a path forward.
- Communicate complex ideas clearly to technical and non-technical audiences.
- Shape new work through discovery and proposals; mentor others and raise the bar as you go.
- Operate Across Technology Domains
Distributed systems, data engineering, AI & agentic systems, Dev Ops/SRE. Depth in few areas; breadth across, and appreciation for trade-offs in context.
- You’ll thrive here if
- You reach for the simplest solution that gets the job done and distrust accidental complexity.
- You think in systems, not isolated parts.
- You stay calm when the path is unclear and build clarity for those around you.
- You move easily between the org-level picture and the technical detail.
- You're curious by default and pick up new domains fast.
- You’d rather be in the room with a customer solving a real problem.
- What we’re looking for
- Demonstrable building software systems in complex environments.
- Strong engineering fundamentals; expert in at least one language, ideally polyglot.
- Hands‑on experience designing and delivering distributed systems at scale.
- Deep grasp of architecture, system design, and engineering trade-offs.
- Direct experience working with customers and business stakeholders.
What will you experience in terms of culture at Sahaj?
- A culture of trust, respect and transparency
- Opportunity to collaborate with some of the finest minds in the industry
- Work across multiple domains
What are the benefits of being at Sahaj?
- Unlimited leaves
- Life insurance & private health insurance
- No hierarchy
- Open Salaries
- #J-18808-Ljbffr
Lead / Principal Engineer - Full Stack in London employer: Sahaj Software
Sahaj is an exceptional employer that fosters a culture of trust, respect, and transparency, making it an ideal place for a Data Analytics Engineer to thrive. With a flat structure and radical pay transparency, employees enjoy unlimited leave and the opportunity to collaborate with top industry talent, ensuring meaningful work and professional growth. The company prioritises data quality and long-term maintainability, empowering its engineers to challenge assumptions and drive impactful decisions.
StudySmarter Expert Advice🤫
We think this is how you could land Lead / Principal Engineer - Full Stack in London
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Sahaj Software or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Sahaj Software.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Sahaj Software.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Sahaj Software that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Lead / Principal Engineer - Full Stack in London
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Sahaj Software.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Sahaj Software and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Sahaj Software
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Sahaj Software uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
