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Fullstack Developer – Taplio & TweetHunter

About us 👇🏼

At lempire, we're a passionate team on a mission to help individuals and businesses grow.

As a B2B SaaS company, valued at $150 million, we have a suite of 5 products:

🔵 lemlist: our cold outreach tool, used by 10,000+ users worldwide to find leads & their emails, write campaigns, personalize at scale, and get more customers.

🟠 lemwarm: the 1st deliverability tool on the market that helps users reach their audience’s inboxes.

🔴 lemcal: our scheduling tool that allows you to create a personalized booking page and reduce no-shows.

🟣 Taplio & Tweet Hunter: our tools, used by top influencers like Justin Welsh, to build personal brands on LinkedIn & X (formerly Twitter).

lempire is a fast-growing company with $26M+ in revenue, profitable, and 100% bootstrapped.

Our mantra: Keep growing! We live by it every day.


💻 The Role

We’re looking for a Fullstack Developer to fix, clean, and improve Taplio & Tweet Hunter.

If you want a brand-new project, this isn’t for you.

If you love turning messy code into something scalable and maintainable, keep reading.

🛠 What You’ll Do

Refactor and optimize our codebase (Next.js, Google Cloud Platform, Javascript, Git).

• Identify and fix bugs across frontend and backend.

Improve performance and maintainability.

Support customer success, solving technical issues when needed.

Challenge product requests, balancing speed and quality.


🔥 What’s in It for You?

Fully remote & flexible work. Amazing offices in Paris.

✅ Join a profitable, bootstrapped, and high-growth company.

✅ Work with a motivated, no-BS team.

Direct impact – your work will shape our product.


💡 Who You Are

Must-Haves

3+ years experience

Strong JavaScript / TypeScript skills.

Proven experience cleaning messy code.

Responsible for your own code

Ability to see the big picture and suggest smart trade-offs.

Fast learner, proactive, and independent.

Fluent in English.

Nice-to-Have

• Experience with Twitter Enterprise APIs.

• Experience with LinkedIn APIs.

• Strong GCP knowledge.


Additional Information

Salary up to 65k based on xp + bonus

Where you live, and work is totally up to you – we do have an office in Paris if you enjoy life at the office 🇫🇷

Profit sharing: When lempire wins, all team members share the profits

Alan Blue: Comprehensive 100% premium medical coverage for you and your family

Swile Meal Tickets: Enjoy daily meal tickets to fuel productivity

Navigo Card: Seamless commuting with a 100% covered Navigo card

Full-remote Work Setup: A well-funded home office budget to ensure seamless remote work

Gear: Get a Macbook Pro + tools and equipment you need for your job

Team building: We all meet once per year at really cool places around the world (you can check our video here ;)



Interview process

Interview with Victoire our TAM

Fit dev+PM

Technical test - TBD

Interview with our GM

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Average salary estimate

$65000 / YEARLY (est.)
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$65000K
$65000K

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What You Should Know About Fullstack Developer – Taplio & TweetHunter, lempire

Are you a talented Fullstack Developer looking to make an impact? Join us at lempire, a thriving B2B SaaS company based in Paris, where we help individuals and businesses grow with innovative tools like Taplio and Tweet Hunter. Valued at $150 million and boasting over $26M in revenue, we’re a fully bootstrapped company that values growth and teamwork above all. In this role, you’ll have the chance to take our codebase and turn it from a rough draft into a polished masterpiece. Your knack for fixing, cleaning, and optimizing code is precisely what we need! You’ll work with technologies like Next.js, Google Cloud Platform, and JavaScript while collaborating with our customer success team to resolve technical issues. We appreciate proactive individuals who can balance speed with quality, and your influence will help shape our products directly. Besides a competitive salary up to 65k, you’ll also enjoy a flexible remote work environment, profit-sharing benefits, and comprehensive medical coverage. Join us to not just work but to challenge yourself and grow in a motivated team that values no BS and shares in our success. We can’t wait to welcome you aboard at lempire!

Frequently Asked Questions (FAQs) for Fullstack Developer – Taplio & TweetHunter Role at lempire
What are the responsibilities of a Fullstack Developer at lempire?

As a Fullstack Developer at lempire, you will be responsible for refactoring and optimizing the codebase for our tools, primarily focusing on Taplio and Tweet Hunter. This includes identifying and fixing bugs across both frontend and backend, improving performance and maintainability of existing systems, and supporting customer success teams in troubleshooting technical issues. Your role will also involve balancing speed with quality when addressing product requests.

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What qualifications are required for a Fullstack Developer at lempire?

Candidates applying for the Fullstack Developer position at lempire should have at least 3 years of experience in software development. Strong JavaScript and TypeScript skills are essential, alongside proven experience in cleaning messy code. We value individuals who are responsible for their own code, see the big picture, and can suggest effective trade-offs. A proactive and fast learner who is fluent in English will excel in this role.

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What technologies does a Fullstack Developer work with at lempire?

At lempire, our Fullstack Developer will primarily work with Next.js, Google Cloud Platform, and JavaScript. Familiarity with Twitter and LinkedIn APIs is a plus, as these are integral to tools like Taplio and Tweet Hunter. Your technical skillset should also include Git for version control, ensuring that our development processes remain organized and efficient.

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What benefits do Fullstack Developers receive at lempire?

Fullstack Developers at lempire enjoy a plethora of benefits including a generous salary up to 65k, profit-sharing opportunities, and comprehensive medical coverage. You'll also be provided with a well-funded home office setup to ensure efficient remote work, a Navigo card for seamless commuting, and daily meal tickets to keep you fueled. Plus, there are team-building trips once a year, making it a fun place to work!

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What is the interview process like for the Fullstack Developer position at lempire?

The interview process for the Fullstack Developer role at lempire includes an initial interview with our Technical Account Manager, followed by a technical test. Successful candidates will then have a sit-down with our General Manager, allowing you to get a feel for our company culture and what we value in team members. We aim for a respectful and candid interview process that fosters a good fit for both parties.

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Common Interview Questions for Fullstack Developer – Taplio & TweetHunter
Can you describe your experience with JavaScript and TypeScript?

When discussing your experience with JavaScript and TypeScript, focus on specific projects where you utilized these languages. Highlight your familiarity with frameworks like Next.js and any challenges you overcame, emphasizing your problem-solving abilities and coding style that aligns with lempire's needs.

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How do you approach refactoring code?

When answering this question, discuss your systematic approach to refactoring code. Explain how you prioritize areas of the codebase in need of improvement, and provide examples where you turned messy code into efficient, maintainable systems. Mention any tools and best practices you observe during this process.

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What has been your biggest challenge as a Fullstack Developer?

Think of a specific instance that tested your skills as a Fullstack Developer. Articulate the challenge, the steps you took to tackle it, and the outcome. Focus on what you learned from the experience and how it has shaped your approach to problem-solving in future projects.

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How do you ensure code quality and performance?

Discuss your strategies for ensuring code quality, such as following best practices, conducting code reviews, and utilizing automated testing. Share your understanding of performance optimization techniques and how they apply to the full development lifecycle at lempire.

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How do you handle tight deadlines while maintaining code quality?

In your response, emphasize time management skills and the importance of clear communication with team members. Share examples of situations where you've managed to balance urgency without sacrificing the quality of your work, linking your experiences to approaches you would employ at lempire.

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Can you explain a time when you had to troubleshoot a technical issue?

Provide a relevant example that showcases your problem-solving skills. Outline the technical issue, your approach to diagnosing the problem, and the steps you took to resolve it, demonstrating your critical thinking and analytical skills—qualities vital for a Fullstack Developer at lempire.

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What are your thoughts on the importance of documentation?

Highlight your belief in thorough documentation as essential for future maintenance and onboarding of new team members. Discuss specific practices you implement to ensure your code is well-documented and the cross-team communication that supports collaborative efforts at lempire.

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How do you stay updated with the latest technologies and trends?

Mention specific resources such as tech blogs, online courses, conferences, and communities you engage with to keep your skills sharp. Additionally, illustrate how you incorporate new technologies into your workflow to enhance your contribution as a Fullstack Developer at lempire.

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Why do you want to work with lempire as a Fullstack Developer?

Express your enthusiasm for the lempire mission and how your skills align with the company's goals. Discuss what excites you about working on tools like Taplio and Tweet Hunter, and mention how you hope to contribute to the company's growth and innovative culture.

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What does a successful Fullstack Developer look like to you?

Define the traits you believe are crucial for success in this role, such as being adaptable, proactive, and technically proficient. Relate these characteristics to your experiences and how they align with lempire's values, showcasing your understanding of what makes an effective team member.

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Photo of the Rise User
Collaboration over Competition
Growth & Learning
Work/Life Harmony
Unlimited Vacation
Learning & Development
Social Gatherings
Photo of the Rise User
Inclusive & Diverse
Rise from Within
Mission Driven
Diversity of Opinions
Work/Life Harmony
Transparent & Candid
Growth & Learning
Fast-Paced
Collaboration over Competition
Take Risks
Friends Outside of Work
Passion for Exploration
Customer-Centric
Reward & Recognition
Feedback Forward
Rapid Growth
Medical Insurance
Paid Time-Off
Maternity Leave
Mental Health Resources
Equity
Paternity Leave
Fully Distributed
Flex-Friendly
Some Meals Provided
Snacks
Social Gatherings
Pet Friendly
Company Retreats
Dental Insurance
Life insurance
Health Savings Account (HSA)
Photo of the Rise User
Inclusive & Diverse
Rise from Within
Mission Driven
Diversity of Opinions
Work/Life Harmony
Transparent & Candid
Growth & Learning
Fast-Paced
Collaboration over Competition
Take Risks
Friends Outside of Work
Passion for Exploration
Customer-Centric
Reward & Recognition
Feedback Forward
Rapid Growth
Medical Insurance
Paid Time-Off
Maternity Leave
Mental Health Resources
Equity
Paternity Leave
Fully Distributed
Flex-Friendly
Some Meals Provided
Snacks
Social Gatherings
Pet Friendly
Company Retreats
Dental Insurance
Life insurance
Health Savings Account (HSA)
Photo of the Rise User
Inclusive & Diverse
Rise from Within
Mission Driven
Diversity of Opinions
Work/Life Harmony
Transparent & Candid
Growth & Learning
Fast-Paced
Collaboration over Competition
Take Risks
Friends Outside of Work
Passion for Exploration
Customer-Centric
Reward & Recognition
Feedback Forward
Rapid Growth
Medical Insurance
Paid Time-Off
Maternity Leave
Mental Health Resources
Equity
Paternity Leave
Fully Distributed
Flex-Friendly
Some Meals Provided
Snacks
Social Gatherings
Pet Friendly
Company Retreats
Dental Insurance
Life insurance
Health Savings Account (HSA)
MATCH
VIEW MATCH
FUNDING
SENIORITY LEVEL REQUIREMENT
TEAM SIZE
EMPLOYMENT TYPE
Full-time, remote
DATE POSTED
April 12, 2025

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