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Full Stack Developer

Helios Tech Labs

  • India (Remote / Multiple), India
  • โ‚น3โ€“5 LPA
  • Internship
  • Posted Today
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About the role

Helios Tech Labs is a fastโ€‘growing technology solutions provider that focuses on building endโ€‘toโ€‘end digital products for clients across India. Established in the last few years, the company has quickly carved a niche in webโ€‘application development, cloud integration, and SaaS platforms. With a culture that encourages continuous learning, Helios invests heavily in upโ€‘skilling its talent through internal workshops, mentorship programs, and exposure to realโ€‘world projects.

The firmโ€™s vision is to empower businesses with scalable, secure, and userโ€‘centric applications, and it achieves this by fostering a collaborative environment where fresh ideas are welcomed.

As a Full Stack Developer at Helios Tech Labs, you will be part of a dynamic team that designs, develops, and maintains modern web applications. The role is ideal for recent graduates or candidates with up to one year of experience who are eager to translate their academic knowledge into productionโ€‘grade code. You will work closely with UI/UX designers, product managers, and senior engineers to deliver responsive frontโ€‘end interfaces and robust backโ€‘end services.

Key Responsibilities

  • Design and implement responsive frontโ€‘end components using HTML, CSS, JavaScript and modern frameworks such as React.js or Angular.
  • Develop serverโ€‘side logic, RESTful APIs, and microโ€‘services using Node.js, Python, or Java.
  • Integrate databases like MySQL, PostgreSQL, or MongoDB to store and retrieve application data efficiently.
  • Participate in code reviews, write unit tests, and ensure code quality and maintainability.
  • Collaborate with the Zoho integration team to embed Zoho services into the product suite.
  • Optimize application performance, security, and scalability.
  • Contribute to Agile ceremonies, sprint planning, and daily standโ€‘ups.
  • Stay updated with emerging technologies and suggest improvements to the existing tech stack.
  • Document technical specifications and create user guides for internal stakeholders.
  • Assist in troubleshooting production issues and provide timely fixes.

Tech Stack: HTML5, CSS3, JavaScript, React.js/Angular, Node.js/Python/Java, MySQL/PostgreSQL/MongoDB, REST APIs, Git, Docker, Zoho Platform.

Growth Path: Starting as an Associate Full Stack Developer, you can progress to Senior Developer, Tech Lead, and eventually Architect or Product Manager based on performance and skill acquisition. Helios offers regular performance appraisals, certifications, and exposure to clientโ€‘facing projects that accelerate career growth.

Why Join Helios Tech Labs? The company provides a supportive environment for fresh talent, competitive CTC for entryโ€‘level roles, and the chance to work on diverse projects across industries. Immediate joiners are preferred, ensuring a quick start to your professional journey.

If you are passionate about building endโ€‘toโ€‘end web solutions and thrive in a collaborative setting, Helios Tech Labs is the ideal launchpad for your career.

Eligibility & process

Who can apply

Graduates (B.Tech, BCA, MCA) from any stream with a minimum of 60% aggregate. Candidates from the 2025, 2026 or 2027 batches are eligible. No active backlogs are allowed at the time of joining. Strong problemโ€‘solving ability and a keen interest in fullโ€‘stack development are essential.

Skills & stack

HTML5 CSS3 JavaScript React Angular Node.js Python Java

Selection process

  1. Round 1: Online Aptitude Test
  2. Round 2: Technical Interview (coding and system design)
  3. Round 3: HR Interview

Prep kit

19 resources
Study material 4
Company-specific guides 4
Likely coding questions 4
Round-wise strategy 4
Round 1: Online Assessment (OA) Aptitude, Quantitative Logic & 2 Coding Problems Focus on accuracy and speed. Practice arrays, strings, and standard arithmetic puzzles.
Round 2: Technical Interview 1 Core Tech Stack (HTML5, CSS3, JavaScript, React, Angular, Node.js, Python, Java) & Live Code Tracing Explain your thought process aloud. Analyze time & space complexities before coding.
Round 3: System Design & Problem Solving Database Schemas, APIs & Architecture Basics Clarify edge cases, diagram schemas cleanly, and discuss scalability trade-offs.
Round 4: HR & Cultural Fit Discussion Helios Tech Labs Core Values, Learning Agility & Offer Terms Demonstrate passion, strong communication, and readiness for full-time collaboration.
Technical questions 4
What is the bias-variance tradeoff and how do you prevent overfitting? Answer
Model answer: High bias leads to underfitting (oversimplified model), high variance leads to overfitting (captures noise). Mitigate using L1/L2 Regularization, Dropout, Cross-Validation, and data augmentation.
Explain the difference between Precision, Recall, and F1-Score. Answer
Model answer: Precision = TP / (TP + FP) (correctness of positive predictions). Recall = TP / (TP + FN) (coverage of actual positives). F1-Score is the harmonic mean of Precision and Recall.
How does Gradient Descent work and what is the role of Learning Rate? Answer
Model answer: It optimizes loss functions by iteratively moving weights in the direction of negative gradient. A large learning rate may overshoot the minimum; a small rate causes slow convergence.
What is the difference between Supervised, Unsupervised, and Self-Supervised learning? Answer
Model answer: Supervised uses labeled data (X -> y). Unsupervised finds hidden patterns in unlabeled data (clustering/PCA). Self-supervised generates labels from input data (e.g. masked language modeling in BERT/Transformers).
Behavioural & HR questions 3
Why do you want to join Helios Tech Labs as a Full Stack Developer?
Highlight Helios Tech Labs's market reputation, recent tech innovations, and how your skills in HTML5 directly solve their team's objectives.
Describe a challenging bug or academic project roadblock and how you resolved it.
Use the STAR method: Situation (project context), Task (what needed solving), Action (specific tools/logic applied), Result (quantifiable positive outcome).
How do you handle strict deadlines or sudden scope changes?
Explain your prioritization strategy, proactive communication with mentors/peers, and agile mindset.
Helios Tech Labs โ‚น3โ€“5 LPA
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