Software Engineer I/II

About the role:

We’re looking for a highly skilled and self-driven Node.js Software Development Engineer (SDE-2) to join our team on a contract basis. You’ll be responsible for building scalable backend services and APIs that power our products, with a focus on performance, security, and reliability.

As an SDE-2, you’re expected to take ownership of features end-to-end, mentor junior developers when needed, and contribute to architectural discussions.

Key Responsibilities

• Design, build, and maintain RESTful, gRPC, and/or GraphQL APIs using Node.js
• Write clean, modular, and testable code
• Collaborate closely with product managers, frontend engineers, and DevOps teams
• Optimize existing codebases for performance and scalability
• Integrate with third-party services and internal microservices
• Participate in code reviews and ensure coding best practices are followed
• Write unit and integration tests (e.g., using Jest, Mocha, etc.)

Required Skills & Experience

• 3–5 years of experience building production-grade backend applications
• Strong proficiency in Node.js (Express.js, NestJS, or similar frameworks)
• Solid understanding of JavaScript/TypeScript
• Experience with MongoDB, PostgreSQL, or MySQL
• Experience building APIs that scale — rate limiting, caching, pagination, etc.
• Good understanding of async patterns (Promises, async/await, queues)
• Familiarity with CI/CD, Git workflows, and containerized deployments (Docker)
• Experience working with cloud services (AWS/GCP/Azure)

Nice to Have

• Experience with microservices architecture
• Familiarity with message brokers (Kafka, RabbitMQ, etc.)
• Experience working in Agile or Scrum teams
• Contributions to open-source projects or tech blogs

Senior Software Developers collaborate with Business and Quality Analysts, Designers, Project Managers and more to design software solutions that will create meaningful change for our clients. They listen thoughtfully to understand the context of a business problem and write clean and iterative code to deliver a powerful end result whilst consistently advocating for better engineering practices. By balancing strong opinions with a willingness to find the right answer, Senior Software Developers bring integrity to technology, ensuring all voices are heard.

For a team to thrive, it needs collaboration and room for healthy, respectful debate. Senior Developers are the technologists who cultivate this environment while driving teams toward delivering on an aspirational tech vision and acting as mentors for more junior-level consultants. You will leverage deep technical knowledge to solve complex business problems and proactively assess your team’s health, code quality and nonfunctional requirements.

Job responsibilities

• You will learn and adopt best practices like writing clean and reusable code using TDD, pair programming and design patterns
• You will use and advocate for continuous delivery practices to deliver high-quality software as well as value to end customers as early as possible
• You will work in collaborative, value-driven teams to build innovative customer experiences for our clients
• You will create large-scale distributed systems out of microservices
• You will collaborate with a variety of teammates to build features, design concepts and interactive prototypes and ensure best practices and UX specifications are embedded along the way.
• You will apply the latest technology thinking from our Technology Radar to solve client problems
• You will efficiently utilize DevSecOps tools and practices to build and deploy software, advocating devops culture and shifting security left in development
• You will oversee or take part in the entire cycle of software consulting and delivery from ideation to deployment and everything in between
• You will act as a mentor for less-experienced peers through both your technical knowledge and leadership skills

Job qualifications:

Technical Skills

• You have experience using one or more development languages (Java, Nodejs, React, TypeScript, JavaScript, etc.) with experience in Object-Oriented programming
• You can skillfully write high-quality, well-tested code and you are comfortable with Object-Oriented programming
• You are comfortable with Agile methodologies, such as Extreme Programming (XP), Scrum and/or Kanban
• You have a good awareness of TDD, continuous integration and continuous delivery approaches/tools
• Bonus points if you have working knowledge of cloud technology such as AWS, Azure, Kubernetes and Docker

Professional Skills

• You enjoy influencing others and always advocate for technical excellence while being open to change when needed
• Presence in the external tech community: you willingly share your expertise with others via speaking engagements, contributions to open source, blogs and more
• You’re resilient in ambiguous situations and can approach challenges from multiple perspectives

Other things to know:

Learning & Development

There is no one-size-fits-all career path at Thoughtworks: however you want to develop your career is entirely up to you. But we also balance autonomy with the strength of our cultivation culture. This means your career is supported by interactive tools, numerous development programs and teammates who want to help you grow. We see value in helping each other be our best and that extends to empowering our employees in their career journeys.

About Simpl 

The thrill of working at a start-up that is starting to scale massively is something else. Simpl (FinTech startup of the year - 2020) was formed in 2015 by Nitya Sharma, an investment banker from Wall Street and Chaitra Chidanand, a tech executive from the Valley, when they teamed up with a very clear mission - to make money simple, so that people can live well and do amazing things. Simpl is the payment platform for the mobile-first world, and we’re backed by some of the best names in fintech globally (folks who have invested in Visa, Square and Transferwise), and has Joe Saunders, Ex Chairman and CEO of Visa as a board member.

Everyone at Simpl is an internal entrepreneur who is given a lot of bandwidth and resources to create the next breakthrough towards the long term vision of “making money Simpl”. Our first product is a payment platform that lets people buy instantly, anywhere online, and pay later. In the background, Simpl uses big data for credit underwriting, risk and fraud modelling, all without any paperwork, and enables Banks and Non-Bank Financial Companies to access a whole new consumer market.

In place of traditional forms of identification and authentication, Simpl integrates deeply into merchant apps via SDKs and APIs. This allows for more sophisticated forms of authentication that take full advantage of smartphone data and processing power.

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We’re looking for polyglot developers who love to code. You should have >3 years of experience building high-quality products. You should have the ability to write clean code and must’ve worked on one of Ruby, NodeJS, Golang or Python

Responsibilities

1. Develop new features - build POCs, get feedback, and scale is our default mode
2. Building reusable and platform specific components
3. Translating designs and wireframes into high-quality code
4. Optimizing services for maximum performance
5. Ensure faster release cycles by managing distribution over the cloud 

Requirements

1. Hands-on experience in all aspects of software development - analysis, coding, writing tests, deployment, the works.
2. Knowledge of relational databases, SQL, ACID and distributed locking
3. Solid OOPS understanding.
4. Good exposure to building distributed systems, micro-services architecture.
5. Continuous delivery experience
6. Exposure to building platforms (not just products) would be a plus

TeamExtn is looking for a passionate Senior Scala Engineer. It will be expected from you to build pragmatic solutions on mission-critical initiatives. If you know your stuff, see the beauty in code, have knowledge in depth and breadth, advocate best practices, and love to work with distributed systems, then this is an ideal position for you.

As a core member of our Special Projects team, you will work on various new projects in a startup-like environment. These projects may include such things as building new APIs (REST/GraphQL/gRPC) for new products, integrating new products with core Carvana services, building highly scalable back end processing systems in Scala and integrating with systems backed by Machine Learning. You will use cutting edge functional Scala libraries such as ZIO. You will have the opportunity to work closely with our Product, Experience and Software Engineering teams to deliver impact.

Responsibilities:

• Build highly scalable APIs and back end processing systems for new products
• Contribute in the full software development lifecycle from design and development to testing and operating in production
• Communicate effectively with engineers, product managers and data scientists
• Drive scalability and performance within our distributed AI platform
• Full software development lifecycle from design and development to testing and operating in production
• Communicate effectively with engineers, product managers and data scientists

Skills And Experience:

• 4+ years experience with Scala or other functional language
• Experience with Akka and Lightbend stack
• Expert with PostgreSQL, MySQL or MS SQL
• Experience in architecting, developing, deploying and operating large scale distributed systems and actor systems
• Experience with cloud APIs (e.g., GCP, AWS, Azure)
• Messaging systems such as GCP Pub/Sub, RabbitMQ, Kafka
• Strong foundation in algorithms and data structures and their real-world use cases.
• Solid understanding of computer systems and networks
• Production quality coding standards and patterns

BONUS SKILLS:

• Experience with functional programming in Scala
• Knowledge of ZIO and related ecosystem
• Experience with functional database libraries in Scala (Quill preferred)
•  

Our Interview Process:
Our interview involves 3 steps.

1. Code Evaluation - In this step we send you a simple assignment that you implement

2. First Technical Round - In this technical round we evaulate you on your skills, concepts and knowledge in Scala.

3. Second Technical Round - If the first round goes well we check how hands you are with Scala and have online problem solving session.

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BrowserStack is the industry-leading, cloud web and mobile testing platform that enables developers to test their websites and apps on different operating systems and mobile devices. Since launching in 2011, our mission has been bold yet simple: To be the testing infrastructure for the internet. 6 years and billions of tests later, we are ready for our next phase of hyper growth. Bootstrapped for the first 6 years, we continue to be profitable since inception with a near exponential https://workable.com/nr?l=https%3A%2F%2Fwww.browserstack.com%2Fgrowth">growth in customers around the globe. Recently, we closed $50M in Series A funding from Accel

Are you are the one who wants to work on a tech-heavy product, and the challenging technical problems that it entails? Problems vary, and can be as diverse as scaling the product smoothly as the company grows, to setting up a device farm, or solving streaming issues through a browser, without the use of plugins. Will you be excited for the challenge to transform and think critically on many computer science disciplines including product design, usability, building APIs and user-centric online applications, business logic, scaling performance, and 24x7 reliability?

JOB RESPONSIBILITIES

• Writing high quality code, participating in code reviews, designing/architecting systems of varying complexity and scope, and creating high quality documentation supporting the design/coding tasks
• Lead out team meetings, stand-ups, and architecture/design discussions
• Identify areas of improvement in our frameworks, tools, processes and strive to make them better. Evaluate our success metrics and evolve our reporting systems
• Works on the web application layer, backend, systems, streaming and other associated technology to build our product and components
• Find solutions and solve issues around a variety of operating systems or programming languages
• Researching new technologies and adapt them to BrowserStack requirements
• Own and commit to all your work, and be accountable for your results
• Using and understanding code from Open Source
• Teaching others how to use new software
• Willing to learn new programming languages and databases
• Able to write efficient SQL queries and design schemas for relational databases
• Participate in a culture of code reviews, writing tech specs, and collaborating closely with other people (no lone wolves)
• Produce high quality software that is unit tested, code reviewed, and checked in regularly for continuous integration
• Develop multi-tier scalable, high-volume performing, and reliable user-centric applications that operate 24x7
• Scale distributed applications, make architectural trade-offs applying synchronous and asynchronous design patterns, write code, and deliver with speediness and quality

• Good experience in at least one scripting language: Ruby, Nodejs, Python, AppleScript, Unix shell or similar
• Familiarity with one compiled language: C, Java, Go or similar
• Good knowledge of operating systems and networking concepts
• Reasonable knowledge of Windows and/or Linux operating systems
• Ability to work on Windows and Linux platform below the application layer, including file systems, kernels, custom installations, shell scripting, internal APIs, etc
• Aggressive problem diagnosis and creative problem solving skills
• Startup mentality, high willingness to learn, and hardworking
• Experience of 3-6 years