
Senior Fullstack Developer (Backend Heavy)

Job Overview:
We are looking for a Full-Stack Developer with 4+ years of experience in software development. The ideal candidate will be proficient in both frontend and backend technologies, capable of building scalable and high-performance applications, and have a problem-solving mindset. You will collaborate with cross-functional teams to develop, optimize, and maintain web applications.
Key Responsibilities :
- Design, develop, and maintain web applications ensuring performance and scalability.
- Work with backend services using Node.js (Express.js/NestJS) and databases.
- Develop and maintain frontend applications using React.js (minimum 1 year experience required).
- Integrate APIs (RESTful & GraphQL) and third-party services.
- Write clean, maintainable, and efficient code following industry best practices.
- Ensure security, reliability, and optimization in applications.
- Participate in debugging, troubleshooting, and performance tuning.
- Work closely with designers, product managers, and engineers to deliver high-quality solutions.
- Stay updated with modern development trends and contribute to technical improvements.
Required Skills & Qualifications :
- 4+ years of experience in full-stack development.
- Strong proficiency in JavaScript and TypeScript.
- Hands-on experience with Node.js (Express.js/NestJS).
- Minimum 1 year of experience working with React.js.
- Experience with SQL (PostgreSQL, MySQL) and NoSQL (MongoDB) databases.
- Proficiency in API design, development, and integration (RESTful, GraphQL).
- Familiarity with version control tools (Git, GitHub/GitLab/Bitbucket).
- Strong problem-solving and analytical skills.
- Ability to work both independently and collaboratively in a team.
Good to Have :
- Experience with Cloud Services (AWS, Azure, or GCP).
- Familiarity with Containerization (Docker, Kubernetes).
- Knowledge of testing frameworks (Jest, Mocha, or Cypress).
- Understanding of event-driven architectures and message queues (Kafka, RabbitMQ).

About FiftyFive Technologies Pvt Ltd
About
Connect with the team
Company social profiles
Similar jobs
Job Title : Senior Software Engineer
Location : Gurugram (Full-time)
Job Description :
- We are looking for a skilled and experienced Java Engineer to join our dynamic team.
- The ideal candidate will have 4 to 10 Years of hands-on experience in software development, with a proven experience as Java Developer with a strong focus on Spring and Spring Boot, Relational Databases and AWS technologies.
- Strong understanding of monolithic & microservices architecture. You will play a crucial role in designing, developing, and maintaining our applications.
- Ensuring their performance, quality and responsiveness.
Key Responsibilities :
● Design, develop, and maintain scalable applications using Java, Spring and Spring Boot.
● Develop and manage relational databases. Should be able to write complex SQL queries.
● Ensure the best possible performance, quality, and responsiveness of the applications.
● Have strong debugging skills to identify bottlenecks and bugs, and devise solutions to mitigate and address these issues.
● Deploy, manage, and scale applications on AWS.
● Conduct code reviews and integration testing to ensure software quality and reliability.
● Collaborate with front-end developers to integrate user-facing elements with server-side logic.
● Collaborate with cross-functional teams to define, design, and ship new features.
● Stay updated with emerging technologies and industry trends.
Qualifications :
● Bachelor’s degree in Computer Science, Information Technology, or a related field.
● 4 to 10 Years of experience in software development.
● Proficient in Java 8+, Spring and Spring Boot.
● Experience with PostgreSQL, MySQL or other relational databases.
● Experience with microservices architecture.
● Understanding of Rest API design and development.
● Hands on experience with Unit Testing frameworks such as Junit, Mockito.
● Experience with version control systems such as Git.
● Solid understanding of object-oriented programming.
● Strong problem-solving skills and attention to detail.
● Excellent communication and teamwork skills.
Preferred Qualifications :
● Strong knowledge of AWS services and best practices.
● Knowledge of containerization technologies like Docker and Kubernetes.
● Familiarity with CI/CD pipelines and DevOps practices.


We are currently hiring a Python Developer to join our engineering team to develop dynamic
software applications.
Main Responsibilities of the Python Engineer:-
Your responsibilities will include:
• Writing effective and scalable Python codes
• Designing and implementing robust applications
• Debugging applications to ensure low-latency and high-availability
• Integrating user-facing elements with server-side logic
• Implementing security and data protection
• Accommodating various data storage solutions
Key Requirements:-
• Degree in Computer Science, Engineering or a related field
• You have prior experience as a Python Developer
• Good knowledge Django framework
• Good knowledge in Lambda and AWS.
• Familiarity with front-end technologies, such as JavaScript, HTML5, and CSS3
• Knowledge of ORM (Object Relational Mapper)
• Familiarity with various testing tools.
Work Location : Pune preferred, Remote option available
Work Timing US Shift 2:30 PM to 11:30 PM or 6:30pm to 3:30am IST
Position Overview:
We are seeking a highly skilled Node.js backend developer to join our dynamic team.
The ideal candidate will have strong expertise in Node.js development. Knowledge of frontend frameworks like React.js or Angular, AI-driven development, Python, and AWS is a plus.
Key Responsibilities:
• Design and develop a NodeJS backend with a modular, scalable architecture.
• Build REST APIs and WebSocket services for real-time updates.
• Optimize PostgreSQL queries, ensure proper indexing, and manage database migrations.
• Implement role-based authentication & authorization (JWT, RBAC in NestJS).
• Set up event-driven patterns (Redis pub/sub, background jobs, async processing).
• Integrate with external api’s (JSON-RPC, XML-RPC, REST).
• Optimize API response times (caching, Redis, database tuning).
• Ensure secure API development (encryption, secure credentials storage).
• Provide technical mentorship to junior developers and contribute to architectural decisions.
About the Role -
We’re seeking a seasoned Senior Java Engineer to drive the development of our B2B product suite. In this pivotal role, you will build robust, scalable, and intuitive applications that empower customers to seamlessly handle money movement transactions, including international payments. You will ensure technical excellence by advocating best practices, prioritizing security, enhancing development processes, and championing a quality-first mindset.
What You'll Do -
• Design and Development: Create robust, efficient, and scalable backend services using Java and Spring Boot.
• API Development: Design, build, and maintain APIs for web and mobile applications.
• Performance and Security: Ensure application performance, scalability, and security best practices.
• Cloud Integration: Collaborate with cross-functional teams to integrate cloud services into our backend infrastructure.
• Code Quality: Write high-quality, maintainable code that adheres to industry standards.
• Mentorship: Support junior and mid-level team members, conduct code reviews, and foster a culture of continuous improvement.
What You’ll Need -
• 5+ years of professional experience as a Backend Engineer.
• Experience showing strong problem-solving skills and a passion for creating user-centric solutions.
• Core Java proficiency. A strong command of the Java language, including object-oriented programming, design patterns, exception handling, and memory management.
• Spring Framework (including Spring Boot)- In-depth knowledge of Spring, especially Spring Boot for building efficient and scalable backend applications.
• Understanding of Spring components like controllers, services, repositories, and security.
• RESTful API Development: Proficiency in designing and implementing RESTful APIs.
Bonus Points -
• Mastery over Java’s core APIs, such as collections, streams, and concurrency frameworks.
• Experience within a B2B fintech environment would be highly desirable
• Database-driven performance query optimization and Kafka messaging systems
We welcome people from all backgrounds who seek the opportunity to help build a future where we connect the dots for international property payments. If you have the curiosity, passion, and collaborative spirit, work with us, and let’s move the world of PropTech forward, together.
Redpin, Currencies Direct and TorFX are proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, colour, religion, national origin, disability, protected veteran status, age, or any other characteristic protected by law.
You will break down business opportunities and problems into software solutions. You will work closely with the CTO to help product and marketing stakeholders distill the product vision and roadmap, into a technology vision. You will be responsible for the evolution of an already bleeding-edge highly distributed systems at the back-end, and would need to work withfront-end architects to come up with the best user experience for the gaming platform. You will be required to make decisions quickly, and work under strict timelines. You would lead technology strategy through analysis of market trends and product requirements. You would help set coding guidelines and help bring the most modern tools to keep engineering processes most efficient.
Requirements:
● B.E/MS in Computer Science or equivalent.
● 10+ years or more of progressive software technology experience with at least 3 years
in an architectural role.
● Completely hands on with technology and architecture. Start-up experience is a huge
plus.
● Ability to quickly prototype and demonstrate technology value adds and educate + drive
adoption within the extended technology team
● Excellent and robust understanding of scalable product system architecture(s),
platforms and core technologies
● Demonstrated problem-solving and leadership skills to pursue correct engineering
process in adverse conditions. Ability to embrace and demonstrate leadership beyond
ownership
● Work with engineering leadership to setup and manage processes.
● Track record of thought leadership and out of the box thinking in the technology arena.
● Ability to work efficiently in an entrepreneurial and in a start-up environment
● A Java/Spring/Akka, Javascript or Golang rockstar.
● Deep and hands on knowledge of some of these technologies - MySQL, NodeJS,
message brokers such as Kafka/RabbitMQ, NoSQL datastore such as Mongo, Cassandra,
Arango, distributed caches such as Redis/memcached, container technology such as
Docker and Kubernetes etc.
● Great proficiency in distributed systems design, with an ability to make the right
trade-offs for creating future-proof solutions.
● Building quick PoCs and full-fledged solutions with various AWS managed services would
be a big plus.


Immediate: Joiners prefered
Years of exp:2+ Years
Location: Bangalore
About the company
Currently we are hiring for a VC backed startup a fast growing fintech startup based in Bangalore.
It is a super app to digitize India’s 50M+ sales agents where they can get access to relevant products & services, receive training through interactive videos on “how to sell, what to sell and whom to sell”, and earn money. For businesses, we help them save a huge effort in managing and training these agents and help them increase their reach to every nook and corner of the country.
India is a trust deficit market which cannot be accessed through Internet Marketing on Facebook and Google as the majority of the customers need training, push, motivation and a primer on why and how to use a product.
To solve this problem, traditional industries like BFSI, Telecom, Automobile, Real Estate etc. use 50M+ frontline sales executives to drive distribution. We believe that not just for these traditional industries but also for emerging companies in FinTech, EdTech etc these agents will play a pivotal role in accessing trust deficit customers.
They have grown to a 100,000+ agent network across India (growing 50% MoM) & are funded by tier1 VC’s and angels in India.
Summary of Role
As a lead of the consumer products software engineering division, you will take an active role in the definition and evolution of standard practices and procedures. You will be responsible for defining and developing software for tasks associated with the developing, designing and debugging of the software applications.
Responsibilities:
- Overlook development of all consumer products in JAVA
- Lead a team of 4-5 developers
- Optimize components for maximum performance across a vast array of web-capable devices and browsers
- Focus on code maintainability and performance of application
- Provide technical advice and assists in solving programming problems
- Continuously create new and interactive features that would help to improve user experience and user engagement.
- Assist with troubleshooting of issues as needed
- Lead the design and architecture of software solutions
- Assist in developing and maintaining continuous integration pipelines
Required Skills for this Role:
- JAVA
- Spring/Spring Boot
- Hibernate
- Linux
- REST
- Kafka
- Mysql
- AWS
- ELK Stack (Elasticsearch)
- CI/CD Pipelines
- Team Leadership experience of at least 3 year
Qualifications:
- 4+ years of experience in Java based technologies
- Experience in designing databases and system architecture
- Experience in building products from scratch at well funded start-ups
- Team Lead/Team Manager experience of at least 3 years
We believe that by empowering the 2 crore MSME manufacturers in India with easy-to-use mobile-first workflow management tools, we can play a pivotal role in realising India’s dream of becoming world’s top-most-desired manufacturing destination and $5 trillion economy. Every
line of code we write, every feature we add, every pixel we create, everything we do helps us get one step closer to our vision.
Our engineering team ardently believes in these 2 core fundamentals:
Polyglot Programming: we are language-agnostic and focus on finding the most optimal and robust solution to a problem - independent of the programming language
Asynchronous Communication: async is an important factor in our team’s productivity. Not only does async produce the best work results, but it also lets people do more meaningful work and live freer, more fulfilled lives.
Objectives 🎯
● Design and develop highly scalable, reliable, and fault-tolerant systems for one of the fastest-growing startups in India
● Participate in code reviews and share knowledge across the team
● Pair with team members on functional and non-functional requirements and spread design philosophy and goals across the team
● Communicate, collaborate and work effectively across distributed teams
● You should understand the user and their behavior and will continuously contribute to making their experience better with each release
Who are we looking for 😎
● Having built scalable backends using Javascript / Typescript would be preferable You should be able to design RESTful APIs that are not overly constrained, and can easily be consumed by the frontend dev
● You have worked with Relational databases like MySQL, Postgres and understand partitioning, sharding, as well as NoSQL databases such as MongoDB/Couchbase etc
● You have worked with searching systems , caching systems and queuing systems You should be at ease with maintaining cloud instances on AWS, GCP, and the like
● Experience with Docker, Kubernetes in production would be prized
● You should have a deep understanding of system design, data structures, and algorithms and understand how to apply them to design pragmatic solutions
● You have experience in identifying, debugging, and resolving complex production issues
● Relevant working experience of at least 3 years
** brownie points if you have experience of Product Startup at scale

Primary Responsibilities
- Design, architect and develop advanced software solutions in a cross functional Agile team supporting multiple projects and initiatives
- Collaborate with product owners and/or the business on requirements definition, development of functional specifications, and design
- Collaborate on or lead development of technical design and specifications as required
- Code, test and document new applications as well as changes to existing system functionality and ensure successful completion
- Take on leadership roles as needed
Skills & Requirements
- Bachelor’s Degree required, preferably in Computer Science or related field
- 3+ years of software development experience using GoLang/Java programming language
- Experience with cloud technologies (AWS/Azure/GCP/Pivotal Cloud Foundry/any private cloud) and containerization is required
- Experience with a micro-services architecture is a plus
- Excellent communication, collaboration, reporting, analytical and problem solving skills
- Experience with PostgreSQL or other Relational Databases
- Test-driven development mindset and a focus on quality, scalability and performance
- Strong programming fundamentals and ability to produce high quality code
- Solid understanding of Agile (SCRUM) Development Process required
#Skills-
- Extensive knowledge of JavaScript, web stacks, libraries, and frameworks.
- Strong Knowledge of Back-end technologies (Node JS).
- Superb interpersonal, communication, and collaboration skills.
- Exceptional analytical and problem-solving aptitude.
- Great organizational and time management skills.
#ExperienceRequired:-
- Minimum 1.5+ years of experience in Project Management
#Responsibilities:-
- Set project timeline
- Monitor project deliverables
#Qualifications:-
- Bachelor's Degree or equivalent experience
- Strong business acumen in project planning and management
- Strong verbal, written, and organizational skills
#fivedaysworking
#workfromoffice
#location-Mohali
#Industry:-
Information Technology & Services.

