Freelance Software Engineer (Full Stack: Node.js, React, TypeScript) | JobSetuu

Description

Job Overview

• Source: Arbeitnow
• Location: Munich
• Job Type: Full-Time

Job Description

🚀 About Atmen

Atmen is a Munich-based RegTech startup revolutionising green certification. Our SaaS platform helps energy-intensive industries (fuels, chemicals, materials) automate compliance and certification—cutting down time by up to 90%.

We replace today's manual, costly, and unpredictable certification processes with continuous, technology-driven verification. Our mission? Making sustainable production simple, scalable, and cost-effective.
**
About the Role**

We’re looking for a Software Engineer to help build and deliver customer-facing solutions by integrating our core platform with a wide range of third-party systems and APIs. This role combines full-stack application development with systems integration, requiring someone who enjoys solving complex technical challenges and turning customer requirements into reliable, scalable software.

You’ll work closely with product managers, customer success, and engineering teams to design, develop, and deploy solutions that connect our platform with our customers’ technology ecosystems.

Tasks

What You’ll Do

• Design, build, and maintain full-stack applications using Node.js, React, TypeScript, NestJS, and PostgreSQL.
• Develop and maintain integrations with external APIs, including REST and other web service technologies.
• Extend and customize our core platform to meet customer-specific business requirements.
• Design clean, maintainable, and scalable backend services and frontend applications.
• Collaborate with customers and internal stakeholders to understand integration requirements and translate them into technical solutions.
• Troubleshoot integration issues across distributed systems and work with third-party vendors when necessary.
• Write well-tested, production-ready code with a focus on reliability, performance, and security.
• Participate in code reviews, architecture discussions, and continuous improvement initiatives.
• Contribute to documentation for integrations, APIs, and internal development processes.

Requirements

🏆 Must-haves

• Strong experience with TypeScript.
• Professional experience developing backend services with Node.js and NestJS.
• Experience building modern frontend applications with React.
• Solid understanding of PostgreSQL and relational database design.
• Experience consuming and integrating external APIs.
• Good understanding of RESTful API design and HTTP protocols.
• Experience with Git and collaborative software development practices.
• Strong problem-solving skills and the ability to work independently.
• Excellent communication skills and the ability to work directly with both technical and non-technical stakeholders.

**
🙏 Nice-to-haves**

• Experience designing and building API integrations at scale.
• Familiarity with authentication standards such as OAuth 2.0, OpenID Connect, JWT, or SAML.
• Experience with cloud platforms (AWS or GCP).
• Knowledge of Docker and containerized deployments.
• Experience with CI/CD pipelines.
• Familiarity with event-driven architectures, messaging systems, or webhooks.
• Experience working in customer-facing or implementation engineering roles.
• Experience with AspenTech tools.

☑️ Job requirements

• Availability: Full-Time Freelancer
• Remote location, preferably in the European Union
• Fluency in English

Benefits

🛠️ How we work

• Asynchronous first: We minimise unnecessary meetings and document everything in Notion.
• Focus time & deep work: Meetings-free mornings + 1 in-office Team Day per week.
• Fast-paced, iterative development: We push to main frequently and release several times per week.
• Strong testing culture: Pragmatic test-driven development (TDD), heavy use of E2E tests.

**
🤫 Why Join Us?**

• 🚀 Impact: Be part of a small, high-performing team driving real-world sustainability impact.
• 🔀 Hybrid work and central Munich offices: work from the office and from home.
• 📈 Growth: Join an early-stage startup with significant ownership and career growth potential.
• 🦾 Cutting-edge tech: Work on exciting challenges in automation, AI, and compliance tech.

👥 Meet the Team

Atmen was initially founded by Flore, Quentin and Erika - forming a strong and competent team bringing 15 years of working experience in the renewable energy sector and an outstanding network. Their competencies are at the crossings between data analytics, energy markets & regulation and product design.

What the team shares? A huge drive to decarbonize our industry, and a fundamental belief that a success is always a people success. An obsession to solve big problems and constantly raise the bar.

⚖️ Atmen is an equal opportunity employer

We embrace diversity **and are committed to creating an inclusive environment for all employees and stakeholders. We are open to all candidates without regard to age, color, national origin, religion, gender or any other characteristics.

Find more English Speaking Jobs in Germany on Arbeitnow

Expert Career Tips for Freelance Software Engineer (Full Stack: Node.js, React, TypeScript) Roles

To succeed in a competitive market as a Freelance Software Engineer (Full Stack: Node.js, React, TypeScript), you need more than just technical skills. Here are some expert strategies to elevate your profile:

• Build a Strong Portfolio: For technical roles, a clean GitHub or a personal project site is essential. For non-technical roles, a case study portfolio demonstrating problem-solving and impact is equally valuable. Show, don't just tell, what you have achieved in your previous positions.
• Master the Narrative: When interviewing, use the STAR method (Situation, Task, Action, Result) to structure your answers. Quantify your results wherever possible—mentioning "increased efficiency by 20%" is much more impactful than saying "improved efficiency."
• Continuous Learning: The industry moves fast. Whether it's staying updated with the latest AI tools or mastering a new management methodology, continuous professional development is key. Consider obtaining industry-recognized certifications that align with Freelance Software Engineer (Full Stack: Node.js, React, TypeScript) requirements.
• Networking: Connect with other professionals in similar roles. Join online communities, attend webinars, and engage in meaningful discussions on professional social networks. Often, the best opportunities come through referrals and community engagement.
• Soft Skills Matter: Communication, empathy, and leadership are often the deciding factors between two equally qualified technical candidates. Cultivate these skills as they are universally valued across all industries and seniority levels.

Additionally, research the specific company's culture and values. Tailoring your application to show how you align with their mission can significantly increase your chances of moving forward in the process.

Salary & Compensation

Salary not disclosed; typically competitive for the role.

Work Arrangement

Type: On-Site

Standard business hours at the office.

Comprehensive Application Strategy & Hiring Process

Applying for a new role is a marathon, not a sprint. Follow this strategic approach to maximize your success rate:

1. Initial Research & Tailoring

Don't send the same resume to every employer. Spend at least 30 minutes researching the company. Look for recent news, their product roadmap, and their team structure. Modify your summary and core competencies to reflect the specific keywords found in the job description.

2. The Perfect Cover Letter

If the application allows for a cover letter, use it to tell a story that your resume cannot. Explain why you are passionate about this specific company and how your unique background makes you the perfect fit for the challenges they are currently facing.

3. Navigating the Multi-Stage Interview

Most modern hiring processes involve 3-5 stages. This typically includes a recruiter screen, a technical or skill-based assessment, a peer interview, and a final leadership round. Prepare for each stage differently: focus on enthusiasm and fit for the recruiter, technical depth for the assessment, and strategic vision for the leadership round.

4. Post-Interview Follow-Up

Always send a personalized thank-you note within 24 hours of each interview. Reference a specific topic discussed during the call to demonstrate your active listening and genuine interest in the role.

By following these steps, you demonstrate a high level of professionalism and attention to detail that sets you apart from the average applicant.

Typical Interview Process

1. Resume screening
2. HR call
3. Skill interview
4. Final manager interview
5. Offer

Tip: Research the company's products and culture.

Global Market Intelligence & Relocation Insights

At JobSetuu, we specialize in helping talent navigate the global job market. Here is what you need to know about the current landscape in Munich and beyond:

The demand for skilled professionals is increasingly borderless. For roles based in Munich, understanding the local cost of living, visa requirements (if applicable), and cultural nuances is vital. If this is a remote role, consider the time zone alignment and the asynchronous communication culture of the hiring organization.

Relocation Support: Many forward-thinking companies offer relocation packages that include moving stipends, temporary housing, and legal assistance with work permits. When evaluating an offer, look beyond the base salary—consider the total compensation package, including equity, bonuses, and healthcare benefits.

Work-Life Balance Trends: Hybrid and remote work have become standard in many regions. Research the local labor laws and common practices regarding work hours and vacation time to ensure the role aligns with your lifestyle goals.

Leveraging JobSetuu's tools can help you compare salaries across different cities and understand the "purchasing power" of your potential offer, ensuring you make an informed decision for your long-term career path.

Skills & Competency Roadmap for Professional Development

To remain competitive in Professional Development, we recommend focusing on the following core competencies over the next 12-18 months:

• Technical Mastery: Deepen your expertise in the core tools and languages relevant to your field. For developers, this might be cloud architecture; for marketers, it might be data-driven attribution modeling.
• AI Augmentation: Learn how to leverage generative AI and automation tools to increase your productivity. Understanding how to integrate these technologies into your workflow is becoming a non-negotiable skill.
• Leadership & Strategy: Even in individual contributor roles, the ability to think strategically and lead projects from inception to completion is highly valued. Focus on stakeholder management and high-level project planning.
• Data Literacy: The ability to interpret data and use it to drive decisions is essential across all business functions. Familiarize yourself with data visualization and basic analytical concepts.

By investing in these areas, you not only prepare yourself for the role you are applying for today but also build a resilient foundation for the opportunities of tomorrow.

Apply via JobSetuu

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