

About the Job
Mid-Level Backend Developer
Experience: 3–5 Years
Salary: Competitive
Preferred Notice Period: Immediate to 30 Days
Opportunity Type: Remote (Global)
Placement Type: Freelance/Contract
(Note: This is a requirement for one of TalentLo’s Clients)
Role Overview Description
We’re seeking experienced backend developers with 3–5 years of professional experience to contribute to backend architecture, API development, and system optimization. This is a freelance/contract opportunity where you’ll work remotely with global clients on impactful projects.
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Responsibilities
- Design, develop, and maintain backend systems ensuring scalability and performance
- Build, document, and maintain RESTful APIs and integrations with third-party services
- Optimize database queries, schemas, and indexing for efficiency
- Implement and enforce security best practices across backend systems
- Troubleshoot, debug, and resolve technical issues in backend pipelines
- Support deployment processes and contribute to CI/CD and DevOps workflows
- Collaborate with front-end developers, product teams, and other stakeholders to deliver features effectively
Requirements:
- 3-5 years developing backend systems
- Proficiency in one or more languages (Node.js, Python, Java, C#, PHP)
- Strong database design and optimization skills
- API development and documentation experience
- Understanding of security best practices
- Experience with deployment and basic DevOps
How to Apply
- Create your profile on TalentLo’s platform (https://www.talentlo.com/signup)
- Submit your resume, GitHub, or portfolio
- Get shortlisted & connect with the client
About TalentLo
TalentLo is a revolutionary freelance platform connecting exceptional tech talent with high-quality clients worldwide. We’re building a select pool of talented freelancers to match with companies actively seeking specialized freelance expertise.
✨ If you’re ready to work on exciting backend projects, collaborate with global teams, and take your career to the next level — apply today!

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About Company
Espressif Systems (688018) is a public multinational, fabless semiconductor company established in 2008, with headquarters in Shanghai and offices in Greater China, India, and Europe. We have a passionate team of engineers and scientists from all over the world, focused on developing cutting-edge WiFi-and-Bluetooth, low-power IoT solutions. We have created the popular ESP8266 and ESP32 series of chips, modules, and development boards. By leveraging wireless computing, we provide green, versatile, and cost-effective chipsets. We have always been committed to offering IoT solutions that are secure, robust, and power-efficient. By open-sourcing our technology, we aim to enable developers to use Espressif’s technology globally and build smart connected devices. In July 2019, Espressif made its Initial Public Offering on the Sci-Tech Innovation Board (STAR) of the Shanghai Stock Exchange (SSE).
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About the Role
Espressif’s https://rainmaker.espressif.com/ is a paradigm-shifting IoT cloud platform that provides seamless connectivity to IoT devices to mobile apps, voice assistants, and other services. It is designed with scalability, security, reliability, and operational cost at the center. We are looking for senior cloud engineers who can significantly contribute to this platform by means of architecture, design, and implementation. It’s highly desirable that the candidate has earlier experience of working on large-scale cloud product development and understand the responsibilities and challenges well. Strong hands-on experience in writing code in Go, Java, or Python is a must.
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BE/B.Tech in Computer Science with 5-10 years of experience.
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Strong Computer Science Fundamentals.
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Good working experience of any of the Cloud Platforms - AWS, Azure, Google Cloud Platform.
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Good Experience in the development of RESTful APIs, handling the security and
performance aspects.
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Strong debugging and troubleshooting skills.
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Experience working with RDBMS or any NoSQL database like DynamoDB, MYSQL, Oracle.
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Working knowledge about CI/CD tools - Maven/Gradle, Jenkins, experience in a Linux (or Unix) based environment.
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Exposure to Serverless computing frameworks like AWS Lambda, Google Cloud Functions, Azure Functions
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Some Exposure to front end development tools - HTML5, CSS, Javascript, React.js/Anular.js
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Working knowledge on Docker, Jenkins.
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Job Overview
We are looking for a talented Senior Backend Developer to join our team in developing backend servicing. As a key member of our development team, you will be responsible for cross-functional teams to design, develop, and maintain backend services and APIs using Node.js. The ideal candidate is passionate about distributed systems, has experience with backend services and is excited about optimising applications for performance, scalability, and reliability.
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About Us
DataWeave provides Retailers and Brands with “Competitive Intelligence as a Service” that enables them to take
key decisions that impact their revenue. Powered by AI, we provide easily consumable and actionable
competitive intelligence by aggregating and analyzing billions of publicly available data points on the Web to
help businesses develop data-driven strategies and make smarter decisions.
Products@DataWeave
We, the Products team at DataWeave, build data products that provide timely insights that are readily
consumable and actionable, at scale. Our underpinnings are: scale, impact, engagement, and visibility. We help
businesses take data driven decisions everyday. We also give them insights for long term strategy. We are
focussed on creating value for our customers and help them succeed.
How we work
It's hard to tell what we love more, problems or solutions! Every day, we choose to address some of the hardest
data problems that there are. We are in the business of making sense of messy public data on the web. At
serious scale! Read more on Become a DataWeaver
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retailers and brands.
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● Opportunity to work on a variety of challenging problems and technologies to figure out what really
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● Learning opportunities with courses, trainings, and tech conferences. Mentorship from seniors in the
team.
● Last but not the least, competitive salary packages and fast paced growth opportunities.
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● Build a low latency serving layer that powers DataWeave's Dashboards, Reports, and Analytics
functionality
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● Design user interaction workflows on our products and integrating them with data APIs
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● Scale our back end data and analytics pipeline to handle increasingly large amounts of data.
● Work closely with the Head of Products and UX designers to understand the product vision and design
philosophy
● Lead/be a part of all major tech decisions. Bring in best practices. Mentor younger team members and
interns.
● Constantly think scale, think automation. Measure everything. Optimize proactively.
● Be a tech thought leader. Add passion and vibrance to the team. Push the envelope.
Skills and Requirements
● 4-7 years of experience building and scaling APIs and web applications.
● Experience building and managing large scale data/analytics systems.
● Have a strong grasp of CS fundamentals and excellent problem solving abilities. Have a good
understanding of software design principles and architectural best practices.
● Be passionate about writing code and have experience coding in multiple languages, including at least
one scripting language, preferably Python.
● Be able to argue convincingly why feature X of language Y rocks/sucks, or why a certain design decision
is right/wrong, and so on.
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● Have experience working with multiple storage and indexing technologies such as MySQL, Redis,
MongoDB, Cassandra, Elastic.
● Good knowledge (including internals) of messaging systems such as Kafka and RabbitMQ.
● Use the command line like a pro. Be proficient in Git and other essential software development tools.
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Graylog, StatsD, Datadog etc.
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dependencies.
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