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Role overview:

We are hiring one Senior Backend Engineer to take end-to-end ownership of our serverless backend — a hands-on IC role for someone both technically excellent and comfortable being one of the few people the entire backend depends on. You'll own the services across several Node.js and Python repositories, work directly with the founders and product team, and set the technical bar for reliability, security, and performance.

Key responsibilities

• Design, build, and operate AWS Lambda services across our HCM/workforce, project-management, commercial/revenue, permissions, and document domains — each comprising dozens of functions.
• Own the multi-tenant PostgreSQL data layer — schema design, query performance, and the permission/relationship model — end to end.
• Maintain and evolve the request path — API Gateway → custom Lambda authorizer → VPC-bound Lambda → private databases — including the runtime IAM/credential model that scopes every request.
• Safeguard tenant isolation and security across a per-company Cognito authentication model.
• Build and maintain integrations with external construction data environments (Asite, Autodesk Construction Cloud), including large-scale document synchronization.
• Optimize performance and reliability to keep latency-sensitive endpoints well within platform limits under growing load.
• Raise the engineering bar — testing, observability, CI/CD, and modernization of legacy components.
• Debug and resolve production incidents to root cause, and put safeguards in place so they don't recur.
• Document decisions and designs and collaborate with the frontend (Angular) and product teams.

Challenges you'll solve.

We prefer to be candid — these are the problems that make this role genuinely interesting:

Latency under a hard ceiling

API Gateway terminates any request beyond ~29 seconds regardless of the Lambda's own timeout — yet much of our value comes from heavy cross-project reporting. You'll keep p95 latency within budget through set-based SQL, pagination, streaming, and asynchronous processing.

Least-privilege, per-request security

A shared custom authorizer mints short-lived, request-scoped credentials via sts:AssumeRole under a strict 2,048-character inline session-policy limit. You'll design permission models that stay within that budget and reason about IAM precisely.

Graph-shaped data, relational store

The permission and relationship model is inherently graph-like, but lives in PostgreSQL — you'll model it with recursive queries, careful indexing, and set-based traversal rather than reaching for a separate graph engine.

Watertight multi-tenancy

One Cognito pool per company and tenant-scoped access throughout — isolation is a first-order concern.

VPC-bound serverless

Lambdas run inside a VPC to reach private databases; you'll manage cold starts, connection lifecycles, and pool limits.

Resilient external integrations

Syncing large document sets from third-party APIs (including SOAP/XML) demands backpressure, deduplication, retries, and graceful partial-failure handling.

Compute-heavy workloads

Server-side PDF generation, image processing, and multi-currency handling within Lambda's memory and time constraints.

The stack.

Runtime — Node.js, Python, AWS Lambda

AWS services — -1 API Gateway, Lambda, Cognito, STS / IAM, Secrets Manager, S3 CloudWatch, VPC, EC2

Infrastructure & CI/CD- AWS SAM, CodePipeline → CodeBuild Shared Data —PostgreSQL

Qualifications.

• 5+ years building and operating production backend systems.
• Deep expertise in Node.js and JavaScript — the asynchronous model, event loop, and memory behavior — plus solid working proficiency in Python and its production behavior.
• Strong hands-on AWS experience, ideally serverless (Lambda, API Gateway, IAM/STS, VPC, Secrets Manager, CloudWatch) — able to reason about IAM policies, not just apply them.
• Advanced SQL and relational data modeling — set-based query design and a working understanding of why N+1 patterns cause production issues.
• Proven production-debugging ability — root-cause analysis in distributed systems from logs and first principles.
• Strong ownership, sound judgment, and clear written communication — able to make good decisions with incomplete information and explain trade-offs to non-engineers.

Interview Process:

Introductory call-Mutual fit and role overview.

Technical deep-dive- A walkthrough of a challenging production problem you have owned.

Practical exercise -A realistic backend task, or a walkthrough of your own representative code.

System design- Collaborative design on a real scenario.

Final conversation- Values, ownership, compensation, and offer.

Experience: 1 – 3.5 years

Mandatory Skills 

• Should have good knowledge in Object Oriented Programming concepts. 
• Good knowledge in ASP.NET, MVC and C#
• Understanding of JavaScript, HTML5 and CSS. 
• Good Knowledge in SQL Server and RDBMS concepts.

Desired Skills set:

• Create systems with .NET framework 4.x / ASP.NET MVC / SQL Server 2008-2016 / WCF / Web Services / WebAPI based on the design specification.
• Ability to create and optimize SQL Server 2008-2016 stored procedures.
• Experience with JQuery or similar technologies.
• Knowledge on .Net Core is an added advantage.

Description:

• Understanding on performing analysis and design, and develop the small/large-scale systems.
• Responsible for developing new programs and proofing the program to develop needed changes to assure production of a quality product.
• Tests the written programs to ensure that logic and syntax are correct, and that program results are accurate.
• Document code consistently throughout the development process by listing a description of the program, special instructions, and any changes made in database tables on procedural, modular and database level.
• Strong grasp of OO principles
• 1+ years of development experience in OO languages such as C# and MVC architecture.
• Sound knowledge of SQL and database technologies
• Knowledge of Agile Methodologies such as Extreme Programming (XP) & Scrum

4 - 6years of experience in web and API development

4+ years experience with http://asp.net/MVC/C" target="_blank">ASP.NET/MVC/C#.

4+ years working with SQL Server (2012+).
Good Knowledge of scripting libraries like jQuery, Knockout, Angular JS

What are we looking for? :

- Experience of upto 3 years in PHP or other backend programming languages.

- Understanding of MVC structures, OOPs concepts and Frameworks.

- Experience working with Linux, Nginx or Apache and Git, REST APIs.

- Experience with Third party API integrations and using various vendor libraries.

- Have knowledge of Database schemas, structures and migrations.

- Experience in Laravel would be a huge plus.

What you will be doing?:

- Collaborate with team members and solve new challenges through tech and research.

- Take end-to-end ownership of delivering new modules - analyze customer usage & feedback, review business requirements, develop functionalities and test code.

- Write clean readable code and also follow best practices for efficiency and performance.

- Self learn and work independently, Also collaborate with the team when required.

- Communicate constructively and value user experience and feedback.

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What can you expect to learn?:

- Exposure to latest web technologies and frameworks like Angular, Laravel, PHP, Magento, PWAs, REST APIs, Elastic search and Web services.

- Develop custom functionalities and modules in Laravel to implement business ideas and user requirements.

- Best coding practices and various methodologies to optimize performance and produce the best quality product. Various caching techniques and optimization standards.

- Microservices architecture and Scalability using cloud services, Automation of manual tasks using linux and shell scripting, Data migrations, SQL and Version control tools like bitbucket.

Perks : 

- Competitive salary

- Flexible work hours

- No dress code

- Group outings

- Supportive work culture

Expereince : 2-4 yrs experience

• Experience in woocommerce customization
• Experience in theme and plugin customization
• Knowledge of Jquery & Javascript is an added advantage.
• Hands on experience with any E-commerce website will be an advantage

• Participate in requirement analysis
• Write clean, scalable code using .NET
• Test and Deploy applications and systems

• Must have good command on c#
• Should have knowledge on the official ASP.NET, ANGULAR JS and MVC