
Strong Backend Engineering (Golang) Profiles
Mandatory (Experience 1) – Must have 3+ years of hands-on backend engineering experience, with at least 2+ years working primarily in Golang on production systems
Mandatory (Experience 2) – Must have strong hands-on experience with Golang, including writing clean, scalable, and maintainable backend services
Mandatory (Experience 3) – Must have experience designing, developing, and owning RESTful and/or gRPC APIs end-to-end (from design to production)
Mandatory (Experience 4) – Must have solid experience working with databases such as PostgreSQL/MySQL/ MongoDB
Mandatory (Experience 5) – Must have a strong understanding of concurrency, performance optimization, and memory management in Go

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Job Title: Golang Developer
Location: Kolkata
Job Type: Full-time
Working Days: 5 Days (Rotational off)
About the Role:
We are seeking a skilled Golang Developer with experience in Golang, Node.js, WebSocket
communication, and API development. In this role, you will work closely with our development
team to design, develop, and maintain high-performance backend systems and real-time
applications.
Key Responsibilities:
Design, build, and maintain efficient, reusable, and reliable Golang code.
Develop scalable APIs and microservices.
Integrate and build real-time communication using WebSocket protocols.
Collaborate with frontend developers and other team members to establish objectives
and design more functional, cohesive systems.
Write clean, maintainable, and well-documented code.
Optimize applications for maximum performance, scalability, and security.
Participate in code reviews, contribute to team knowledge, and continuously improve
development processes.
Troubleshoot, debug, and upgrade existing systems.
Occasionally work with Node.js services and modules when needed.
Required Skills and Qualifications:
Min 3+ years of experience in backend development with Golang.
Solid understanding of Node.js and JavaScript/TypeScript.
Hands-on experience with WebSocket integration and real-time applications.
Strong knowledge of RESTful APIs, API design principles, and API documentation. Experience with relational and NoSQL databases (e.g., MySQL, PostgreSQL, MongoDB).
Good understanding of concurrent programming and microservices architecture.
Familiarity with cloud platforms (AWS, GCP, Azure) is a plus.
Knowledge of containerization tools like Docker and Kubernetes is a plus.
Strong problem-solving skills, attention to detail, and a proactive attitude.
Responsibilities:
- Lead simultaneous development for multiple business verticals.
- Design & develop highly scalable, reliable, secure, and fault-tolerant systems.
- Ensure that exceptional standards are maintained in all aspects of engineering.
- Collaborate with other engineering teams to learn and share best practices.
- Take ownership of technical performance metrics and strive actively to improve them.
- Mentors junior members of the team and contributes to code reviews.
Requirements:
- A passion to solve tough engineering/data challenges.
- Be well versed with cloud computing platforms AWS/GCP
- Experience with SQL technologies (MySQL, PostgreSQL)
- Experience working with NoSQL technologies (MongoDB, ElasticSearch)
- Excellent Programming skills in Python/Java/GoLang
- Big Data streaming services (Kinesis, Kafka, RabbitMQ)
- Distributed cache systems(Redis, Memcache)
- Advanced data solutions(BigQuery, RedShift, DynamoDB, Cassandra)
- Automated testing frameworks and CI/CD pipelines Infrastructure orchestration(Docker/Kubernetes/Nginx)
- Cloud-native tech like Lambda, ASG, CDN, ELB, SNS/SQS, S3 Route53 SES
LambdaTest is a cloud-based testing platform aimed at bringing the whole testing ecosystem to cloud. LambdaTest provides access to a powerful cloud network of 2000+ real browsers and operating system that helps testers in cross-browser and crossplatform compatibility testing. The product roadmap is evolving and there are many more functionalities and features which will be added to the product. The company is backed by the Tier 1 VC funds and entrepreneurs of the industry. We are growing at a fantastic rate. This is an incredible opportunity for someone talented and ambitious to make a huge impact.
Role
- Develop & maintain shared APIs, libraries and frameworks
- Improve the performance and reliability of our services including databases, CI/CD pipeline, web services, and other integrations
- Monitor and scale our cloud infrastructure
- Collaborate with other teams on security, automation, and internal tools
- Evaluate and develop new tools and technologies that can help achieve company-level goals
Required Candidate profile
- 4 - 8 years of experience in Development.
- Should have good knowledge of backend Technologies like Python, Nodejs, Golang.
- Should have worked with Databases like Mysql, monogdb etc.
- Should have working experience in cloud environment.
- Engineering degree in computer science, engineering or related discipline from good institutes
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
- AWS - experience in extensive use of AWS offerings like Redis, Kafka etc.
- 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
Esper is looking for a software engineer to transform the customer experience
for developers and engineering teams using the platform of services to deploy
and build out their device fleets. You and your team will own services that will
enable customers to develop and customize their development process, along
with easing their use of Continuous Integration techniques for their software. We
need a leader that is experienced in delivering scalable multi-region fault tolerant
systems, is passionate about the developer tools space, is excited to have
software developers as their customers, and is obsessed about creating
compelling customer experiences.
In this role you will contribute to a critical and highly-visible function within the
Esper business. You will be given the opportunity to autonomously deliver the
technical direction of the service, and the feature roadmap. You will work with
extraordinary talent and have the opportunity to hire and shape the team to best
execute on the product. If you’re excited to have a large impact on Esper and the
device industry, you’ll find this role to be engaging, challenging, and full of
opportunities to learn and grow.
Key Responsibilities
Help drive business decisions with your technical input
Design, implement, test, deploy and maintain innovative software
solutions to transform service performance, durability, cost, and
security.
Use software engineering best practices to ensure a high standard of
quality for all of the team deliverables
Write high quality distributed system software
Work in an agile, startup-like development environment, where you are always working on the most important stuff.
Basic Qualifications
2 -4 years of professional software development experience
You’ve designed, built, scaled and maintained production services, and know how to compose a service oriented architecture.
Degree or foreign equivalent in Computer Science, Engineering, Mathematics, or a related field.
You write high quality, well tested code to meet the needs of your customers
You are comfortable with programming languages like Go, Python, Java
You’ve good understanding of databases system like Postgres. Extensive Knowledge about Postgres is a big plus.
You’ve have worked with Docker, Kubernetes and have fundamental understanding of distributed systems like Kafka, Elasticsearch
Preferred Qualifications
Experience taking a lead role developing complex software systems that have successfully been delivered to customers.
Experience in communicating with users, other technical teams and senior management to collect requirements, describe software product features, technical designs and product strategy.
Knowledge of professional software engineering practices & best practices for full software development life cycle, including coding standards, code reviews, source control management, continuous deployments, testing and operations
Demonstrated ability to mentor junior software engineers in all aspects of their engineering skill-sets.
What we think makes us special
Esper is a fast-growing, well-funded company where everyone matters and you can see your impact daily. We trust our teammates and offer intense ownership and therefore accountability. We’re inventing the future and building something special. The team really enjoys what we do and cares about your input. We don’t hire just to fill a spot, we want you to make a difference.
As you help us build this special company, Esper will take care of you. We offer flexible vacation, regular hack-days, competitive pay and benefits, and room for advancement. We hire capable veterans so we avoid the drama and trust in each other’s work. Our worldwide footprint mixes different cultures for a unique experience. We also like to have fun because we play just as hard as we work.
- Using the latest technologies to solve real problems for our customers at a massive scale
- Collaborating closely with other engineers as a valuable member of a cross-functional team
- Sharing your knowledge and building creative solutions while helping the team evolve best practices
- Designing, developing, and deploying backend services with a focus on high availability, low latency, and scalability
- Taking end-to-end responsibility for the services that are owned by your team, including taking part in an on-call rotation
Who you are
- A minimum of B.S. degree in Information Technology or Computer Science or 5+ years in a similar position
- Able to adapt, change and grow quickly as we scale the organization
- Passionate about engineering practices like agile, continuous delivery, test-driven development, traceability, and observability
- Growth mentality is curious and not afraid to be experimental.
- You share your ideas and continuously improve yourself and the team around you
- Solid experience as an Engineer designing, developing and maintaining API driven solutions
- Strong communication skills, high integrity, and great attention to detail
You’ll get to work with:
- Docker and Kubernetes
- Go and/or PHP
- PostgreSQL, Elastic Search, RabbitMQ
- Memcache, Redis
- Microservices architecture
- ELK, Jaeger, Prometheus & Grafana
At JFrog, we’re reinventing DevOps to help the world’s greatest companies innovate -- and we want you along for the ride. This is a special place with a unique combination of brilliance, spirit and just all-around great people. Here, if you’re willing to do more, your career can take off. And since software plays a central role in everyone’s lives, you’ll be part of an important mission. Thousands of customers, including the majority of the Fortune 100, trust JFrog to manage, accelerate, and secure their software delivery from code to production -- a concept we call “liquid software.” Wouldn't it be amazing if you could join us in our journey?
We are looking for an experienced, hands-on developer to join an innovative and talented R&D team, responsible for delivering fast and high quality code, using the latest frameworks and technologies.
As a Senior Software Engineer in JFrog you will...
- Be responsible for all development aspects form design to production of a wide hybrid/ cloud naitive product
- Write high quality, testable and efficient code in Java and Go
- Initiate and promote new ideas for continuous improvement of the product functionality
- Work closely with other team members as well as mentoring new team members
To be a Senior Software Engineer in JFrog you need...
- 5+ years of software development experience
- Proven deep knowledge of Java or Go
- Deep understanding of relational databases, concurrent programming and performance tuning
- Vast experience with large scale production environments
- Experience with micro services architecture, multithreading
- Familiarity with Cloud infrastructure, Docker, Kubernetes & CI/CD
- Disciplined approach to testing and quality assurance
● 3-6 Years of experience with a Bachelor’s/Master's degree in Computer Science, Math, or related
technical domain
● Skilled in software development lifecycle, and designing and developing large-scale, multi-tiered,
distributed software applications, tools, systems or services using Object Oriented Design,
distributed programming, Java, Python, Node.js.
● Knowledge of ORM tools like Hibernate, JPA.
● Good knowledge of one or more relational and NoSQL databases
● Experience in deployment of microservices over Amazon Web Services
● Experience in delivering quality products using microservices architecture.
● Knowledge of Agile methodologies & best practices for the full software development life cycle,
including coding standards, code reviews, source control management, build processes, testing,
and operations
● Strong hold on Data Structure, Problem solving skills
To succeed at Zest, you will need
● Ability to operate and communicate with every business unit and level of hierarchy
● High levels of energy and enthusiasm for all that you do
● Be someone who does not take “no” for an answer and pushes for continuous innovation and
evolution
● Have extremely high standards in everything you do – you will be required to keep raising the bar
● Ability to think big and to inspire a vision in others
● Kindness, warmth and a positive, optimistic attitude
And what do you get in return?
● Opportunity to be part of one of the most exciting consumer growth stories in the world
● One of the best funded and most far advanced companies in the space (investors are leading
global VCs)
● We will teach you all you need to know about “Fintech”
● Endless amounts of learning and development – formal and informal
● Ability to work with some of the best, nicest and most passionate people in the digital lending
industry – from all over the world
● Founders with the right vision and motivation to make this a success story
● Freedom to work how you like (we do not do ‘facetime’)
● A culture of trust and honesty – we will not second guess you
● A flat structure with minimal politics or hierarchy
● Recognition and respect for your work
● Market beating compensation and Equity ownership for the best candidate
● Lunch, great healthcare, decent coffee and a nice office.







